On Tuesday, Japan’s weather agency issued its highest-level warning that a megaquake could follow Monday’s powerful tremor.
The warning covers approximately 800 miles (1,300 kilometres), stretching from Japan’s northeastern coast from Chiba, just east of Tokyo, to Hokkaido.
Monday night’s earthquake injured at least 51 people, according to the Fire and Disaster Management Agency. It also triggered widespread tsunami warnings, with waves of up to 70cm reported in several coastal communities.
The quake struck at around 11.15pm in the Pacific Ocean, roughly 50 miles off the coast of Aomori.
Tuesday’s notice was the first time this top-tier alert has been issued since the warning system was launched in 2022.
Key Points
Multiple tremors including one of magnitude 5.7 strike Japan
Japan’s earthquake and ‘megaquake’ advisory: What we know so far
Number of people injured by 7.5-magnitude earthquake rises to 51
Schools in northern and northeastern Japan reopen today
Historic shrine in Aomori Prefecture sustains significant damage in Monday’s magnitude-7.5 earthquake
Is it safe to travel to Japan?
Multiple tremors including one of magnitude 5.7 strike Japan 03:34 , Maroosha Muzaffar
Japan has recorded a series of powerful aftershocks in the past several hours, including a magnitude 5.7 earthquake near the east coast of Honshu and a 4.9 earthquake in the Hokkaido region shortly after.
Two smaller quakes, of magnitudes 3.2 and 3, were also detected near the southern coast of Honshu.
These come after the magnitude-7.5 earthquake that struck the country on Monday night, after which a megaquake advisory was also issued.
Schools in northern and northeastern Japan reopened on Wednesday 03:30 , Shaheena Uddin
Most schools in northeastern and northern Japan reopened on Wednesday after closures caused by Monday night’s magnitude-7.5 earthquake off Aomori Prefecture, though a rare megaquake alert remains in effect for coastal regions from Hokkaido to Chiba.
Over 300 schools across five prefectures – Hokkaido, Aomori, Iwate, Miyagi, and Fukushima – were closed on Tuesday, with some remaining shut due to quake damage.
Students have been asked to be ready for immediate evacuation for about a week.
At reopened schools, including a public elementary in Hachinohe, Aomori, no injuries were reported, and children quickly returned to normal routines, Mainichi reported.
A worker clears debris at a shopping centre damaged by the earthquake in Hachinohe City, Aomori Prefecture, on 9 December 2025 (JIJI Press/AFP via Getty Images)
Teachers conducted drills and reviewed evacuation procedures, while students shared experiences of fear and family preparedness following the quake, the outlet reported.
The Japan Meteorological Agency had issued tsunami warnings for parts of Hokkaido, Aomori, and Iwate, with Kuji Port recording a 70-centimetre wave.
Recap: Latest quake had a magnitude of 5.7 off Honshu island 01:30 , Shaheena Uddin
On Wednesday, the latest quake took place in a series of earthquakes which have occurred in Japan recently.
The most recent earthquake had a magnitude of 5.7 and struck off the east coast of Honshu, Japan, the European Mediterranean Seismological Centre said.
The quake was at a depth of 31 km, EMSC said. It was earlier reported as having a magnitude at 6.5 and depth at 57 km but this was downgraded.
There were no immediate reports of damage after the quake.
Map shows where latest earthquake struck 00:30 , Shaheena Uddin
The latest earthquake has struck off the north east coast of Japan’s main island, Honshu.
The epicentre, the red circle in the GEOFON map below, is also south of the smaller island of Hokkaido.
(GEOFON) Why did Japan issue an advisory for possible megaquake? Wednesday 10 December 2025 23:40 , Shaheena Uddin
On Tuesday, Japan issued a megaquake advisory after a magnitude 7.5 struck off the eastern coast of Aomori, north of the main island of Honshu.
The areas covered by the advisory extend across 182 municipalities from Hokkaido to Chiba prefecture.
Japan’s Meterological Agency said that Monday’s quake increased potential risks in the regions of Hokkaido and Sanriku coast due to the Pacific plate which has been home to many earthquakes in the past.
They warned another offshore megaquake in the Hokkaido-Sanriku area could cause up to a 30-meter (98-foot) tsunami in the region, kill as many as 199,000 people, destroy up to 220,000 houses and buildings, and cause estimated economic damages of up to 31 trillion yen ($198 billion), according to an estimate by the government. It says as many as 42,000 people could suffer from hypothermia in the winter.
Watch: Moment powerful 7.5-magnitude earthquake hit Japan on Monday Wednesday 10 December 2025 22:40 , Shaheena Uddin
What happend during the 2011 earthquake? Wednesday 10 December 2025 21:40 , Shaheena Uddin
Japan saw a deadly earthquake and tsunami in 2011 which was caused by movement associated with the Japan Trench. It spans from off the eastern coast of Chiba to Aomori, and the Chishima Trench goes from the eastern coast of Hokkaido to the northern islands and the Kurils.
The 2011 quake caused a tsunami that battered northern coastal towns in Iwate, Miyagi and Fukushima prefectures. The tsunami, which topped 15 meters (50 feet) in some areas, slammed into and destroyed the Fukushima Daiichi nuclear power plant. That created deep fears of radiation that linger to this day.
The magnitude 9.0 earthquake and tsunami claimed the lives of 15,894, and the subsequent damage to the reactors at TEPCO’s Fukushima Daiichi Nuclear Power Plant causing the nuclear disaster forced 99,750 people to live as evacuees away from contaminated areas.
A general view of damage to No. 3 reactor building at Fukushima Daiichi nuclear power plant. (Christopher Furlong/Getty Images) Japan’s earthquake and ‘megaquake’ advisory: What we know so far Wednesday 10 December 2025 19:40 , Maroosha Muzaffar
The Japanese Fire and Disaster Management Agency has revised the casualty count from Monday night’s 7.5-magnitude earthquake, confirming that 51 people were injured across Hokkaido, Aomori and Iwate provinces. Seven of those were rated as suffering severe injuries.
In the aftermath of that powerful tremor, Japan’s weather agency issued its first-ever top-tier warning for a “megaquake”, or an earthquake of magnitude 8 or greater. The megaquake advisory covers 182 municipalities across seven prefectures along the Pacific coast, from Hokkaido down to Chiba.
Officials have said that there has been no significant damage to major infrastructure and that nuclear power plant facilities were also unscathed after Monday’s earthquake.
Municipalities ramped up their preparedness in the wake of the megaquake advisory, which is in effect until 16 December.
Local governments updated residents, checked emergency stocks, and tested communication systems. Citizens were urged to keep grab-and-go emergency megaquake kits ready.
An employee uses adhesive tape to reinforce bottles and glasses to prevent them from falling at a pub (JIJI Press/AFP via Getty Images)
Officials also issued public safety recommendations and urged families to sleep in the same room as elderly or vulnerable members and wear day clothes at night to allow faster evacuation in case of any emergency.
Most schools across northern Japan resumed classes today. Students shared stories of fear during the quake, but said daily life was slowly returning to normal. Drills and evacuation reviews took place in many classrooms, according to local reports.
Some examples of damage have been reported after Monday’s quake, including to the historic Chojasan Shinra Shrine in Aomori’s Hachinohe city.
A pub owner in Hachinohe was seen taping bottles to the wall after the quake smashed untethered glass items.
In the wake of Monday’s 7.5-magnitude earthquake, social media saw a wave of fake videos and conspiracy theories about the quake’s cause. Officials urged the public to rely only on verified government sources.
Even though the megaquake advisory remains in place and citizens have been urged to stay vigilant, there is currently no need for citizens to evacuate.
PM Takaichi urges residents to take ‘disaster-prevention measures’ amid megaquake fears Wednesday 10 December 2025 19:00 , Maroosha Muzaffar
Prime minister Sanae Takaichi told reporters yesterday: “Due to the earthquake, the likelihood of a major earthquake occurring in the Hokkaido to the Sanriku offshore region is assessed to be higher than during normal times.”
The Japan Meteorological Agency has issued a warning for Hokkaido and the Sanriku coast, including Aomori, Miyagi, and Iwate, advising residents to stay alert for possible larger quakes in the coming days.
Sanae Takaichi
Takaichi said: “While fully understanding that it remains uncertain whether a major earthquake will actually occur, please take appropriate disaster-prevention measures based on the principle that you are responsible for protecting your own life.”
Takaichi urged residents to continue their day-to-day activities but asked them to remain vigilant for updates from Japan’s weather agency and local officials, while reviewing and reinforcing their evacuation plans in case a larger earthquake occurs.
Number of people injured by 7.5-magnitude earthquake rises to 51 Wednesday 10 December 2025 18:20 , Maroosha Muzaffar
Monday night’s magnitude-7.5 earthquake injured at least 51 people, according to the Fire and Disaster Management Agency. Earlier, the agency had said 34 were injured.
Eleven of them are from Hokkaido, 36 are in Aomori, and four are in Iwate prefecture.
Officials said that as of Wednesday morning, seven of the injuries were considered severe.
Is it safe to travel to Japan? Megaquake warning sparked by 7.5-magnitude tremor Wednesday 10 December 2025 17:40 , Maroosha Muzaffar
Here is the latest travel advice and what you need to know following the massive earthquake in northern Japan:
Is it safe to travel to Japan after megaquake warning?
How likely is it for a megaquake to strike? Wednesday 10 December 2025 16:20 , Maroosha Muzaffar
Megaquakes are inherently unpredictable and can strike anywhere in Japan without warning.
However, the Japanese weather agency has said that they are sometimes preceded by a “somewhat smaller” earthquake of magnitude 7 or higher.
Historically, two major quakes were triggered just one to two days after such precursor events.
People cover the broken glasses with a blue sheet at a beauty salon in Hachinohe, Aomori prefecture, northern Japan, Tuesday, 9 December 2025, following a powerful earthquake on late Monday
For example, a magnitude-7.3 quake off Sanriku in 2011 was followed two days later by the magnitude-9.0 Great East Japan Earthquake.
Similarly, in 1963, a magnitude-7 quake southeast of Etorofu Island was followed 18 hours later by a magnitude 8.5 event.
Despite these cases, the agency has said that – based on global earthquake statistics – the likelihood of a major quake occurring after such an advisory is issued is only about one per cent, or roughly once in every 100 advisories.
Map shows where latest earthquake struck Wednesday 10 December 2025 16:13 , Sam Rkaina
The latest earthquake has struck off the north east coast of Japan’s main island, Honshu.
The epicentre, the red circle in the GEOFON map below, is also south of the smaller island of Hokkaido.
(GEOFON) Earthquake intensity revised down to 5.7 Wednesday 10 December 2025 15:53 , Sam Rkaina
The intensity of Wednesday’s earthquake has been revised down to 5.7, after it was initially reported to be 6.5.
The latest tremor struck off the east coast of Honshu, Japan’s main island, the European Mediterranean Seismological Centre said.
The quake was at a depth of 31 km, EMSC added.
The agency earlier put the magnitude at 6.5 with a depth of 57 km, and said that it was in the Hokkaido region in the north of the country.
There were no immediate reports of damage after the quake.
Schools in northern and northeastern Japan reopen today Wednesday 10 December 2025 15:40 , Maroosha Muzaffar
Most schools in northeastern and northern Japan reopened today after closures caused by Monday night’s magnitude-7.5 earthquake off Aomori Prefecture, though a rare megaquake alert remains in effect for coastal regions from Hokkaido to Chiba.
Over 300 schools across five prefectures – Hokkaido, Aomori, Iwate, Miyagi, and Fukushima – were closed yesterday, with some remaining shut due to quake damage.
Students have been asked to be ready for immediate evacuation for about a week.
At reopened schools, including a public elementary in Hachinohe, Aomori, no injuries were reported, and children quickly returned to normal routines, Mainichi reported.
A worker clears debris at a shopping centre damaged by the earthquake in Hachinohe City, Aomori Prefecture, on 9 December 2025 (JIJI Press/AFP via Getty Images)
Teachers conducted drills and reviewed evacuation procedures, while students shared experiences of fear and family preparedness following the quake, the outlet reported.
The Japan Meteorological Agency had issued tsunami warnings for parts of Hokkaido, Aomori, and Iwate, with Kuji Port recording a 70-centimetre wave.
The ongoing special alert for a potential massive quake covers 182 municipalities in seven prefectures.
Breaking: Hokkaido hit by 6.5 magnitude earthquake Wednesday 10 December 2025 15:27 , Sam Rkaina
The Hokkaido region in Japan has been hit by earthquake of magnitude 6.5.
The European Mediterranean Seismological Centre (EMSC) said the latest quake was at a depth of 57 km.
It comes amid an ongoing warning from Japanese authorities that a megaquake could the region – a tremor of 8.0 or more.
Historic shrine in Aomori Prefecture sustains significant damage in Monday’s magnitude-7.5 earthquake Wednesday 10 December 2025 15:00 , Maroosha Muzaffar
In Hachinohe City in Aomori Prefecture, Chojasan Shinra Shrine sustained significant damage from the magnitude 7.5 earthquake on Monday, local reports said.
Large stone lanterns lining both sides of the shrine were toppled, according to Nippon TV, while the torii gate’s historical signboard was left leaning.
The roof over the offering box area has also collapsed, and the glass doors of the main hall were shattered.
A sign displays information about a road closure due to the earthquake on a highway in Chitose, Hokkaido, Japan, 9 December 2025, in this photo taken by Kyodo (via REUTERS)
In the inner sanctuary, the outlet reported, a hole has appeared in the historic structure that was last renovated in 1827.
The shrine staff said that they had just begun preparations for the New Year, but these have now been disrupted by the destruction caused by the earthquake.
Chojasan Shinra Shrine is one of three shrines that participate in Hachinohe’s annual “Three Shrine Festival”.
The festival runs from 31 July to 4 August, during which portable shrines called o-mikoshi are carried from Ogami Shrine to Chojasan Shinra Shrine.
On 2 August, the shrine also hosts a Kagami-style Dakyu tournament. Dakyu is a traditional Japanese horseback team sport similar to polo, and it is now practised in only three locations in Japan, according to the shrine website.
Fake news and misinformation spreads on social media in the wake of earthquake Wednesday 10 December 2025 14:20 , Maroosha Muzaffar
False claims and AI-generated videos spread rapidly on social media after the magnitude-7.5 earthquake that struck Aomori Prefecture on Monday night, with conspiracy theories wrongly suggesting the quake was man-made.
Authorities, including the Japan Meteorological Agency, warned the public to avoid unverified information, noting that Japan does not and cannot predict quakes by exact date.
Misleading posts on X, Threads, and TikTok recycled patterns seen in past disasters, including fake tsunami footage and fabricated news clips.
No significant damage to infrastructure reported Wednesday 10 December 2025 13:40 , Maroosha Muzaffar
There was no significant damage to infrastructure and no abnormalities at any of Japan’s nuclear power plants after Monday’s massive earthquake.
Chief cabinet secretary Minoru Kihara told reporters that the government was still assessing the situation, gathering details on casualties and property damage, and had activated a crisis management office at the Prime Minister’s Office.
A man clears the debris from a powerful earthquake at a commercial facility in Hachinohe, Aomori prefecture, northern Japan Tuesday, 9 December 2025 (via AP)
He said: “Based on the instruction from the prime minister, we are mobilising all resources for assessing the damage, conducting search-and-rescue operations and implementing emergency disaster relief measures under the policy of prioritising human life.”
Japan municipalities prepare for megaquake emergency Wednesday 10 December 2025 13:00 , Maroosha Muzaffar
Municipalities in Japan have published explanations of the megaquake advisory on their websites and have begun checking their stocks of relief supplies and equipment for use at evacuation centres.
In Fukushima’s Iwaki City, officials urged residents to sign up for emergency email alerts, while in the town of Oarai in Ibaraki Prefecture, northeast of Tokyo, authorities inspected wireless communication systems to ensure they function during any further emergencies.
A vehicle rests on the edge of a collapsed road in Tohoku town in Aomori Prefecture on 9 December 2025, following a 7.5 magnitude earthquake off northern Japan (AFP via Getty Images)
In the aftermath of Monday’s earthquake, officials have urged residents to keep an emergency bag stocked with several days’ worth of essential supplies, including food, water, medication, sturdy shoes and protective helmets.
Yesterday, Japan’s weather agency issued its highest-level warning that a megaquake could follow Monday’s 7.5-magnitude tremor.
Authorities urged anyone living near the Pacific coast to remain vigilant throughout the coming week.
Sleep in the same room as elders, government recommends in the wake of megaquake advisory Wednesday 10 December 2025 12:20 , Maroosha Muzaffar
In the wake of the megaquake advisory issued by the Japanese Meteorological Agency, the government has recommended sleeping in the same room with those who may need extra care, such as children and older adults, to ensure their safety during emergencies, according to The Japan Times.
Wearing day clothes instead of pyjamas that allow for quick evacuation without the need to change can save precious time in case of sudden danger, the recommendations say.
Collapsed bookshelves at a high school library are seen in Hachinohe City in Aomori Prefecture on 9 December 2025, following a 7.5 magnitude earthquake off northern Japan (JIJI Press/AFP via Getty Images)
More than 30 people were injured in Monday’s magnitude-7.5 earthquake.
A rare megaquake advisory is in effect for coastal regions from Hokkaido to Chiba till 16 December.
How many prefectures does the megaquake advisory cover? Wednesday 10 December 2025 11:40 , Maroosha Muzaffar
The Japan Meteorological Agency issued its first-ever special advisory yesterday, warning of possible megaquake and tsunami along the Hokkaido and Sanriku coasts, following Monday’s magnitude-7.5 earthquake off Aomori Prefecture’s eastern shore.
The advisory is issued whenever a magnitude-7 or higher earthquake occurs in northern Japan, signalling an elevated risk of a major trench-type quake along the Japan Trench and Chishima Trench.
The advisory currently covers 182 municipalities across seven prefectures: 63 in Hokkaido, 28 in Aomori, 23 in Iwate, 35 in Miyagi, 10 in Fukushima, nine in Ibaraki, and 14 in Chiba.
A vehicle rests on the edge of a collapsed road in Tohoku town in Aomori Prefecture on 9 December 2025, following a 7.5 magnitude earthquake off northern Japan (Photo by JIJI Press / AFP via Getty Images)
Residents in these areas could experience strong shaking – lower 6 or higher on Japan’s intensity scale – and tsunamis exceeding three metres.
The alert system was established in December 2022, drawing on historical patterns showing that significant earthquakes often follow magnitude-7 events along these trenches.
This is the first time the advisory has been activated since the system was launched.
Japan’s earthquake and ‘megaquake’ advisory: What we know so far Wednesday 10 December 2025 11:00 , Maroosha Muzaffar
The Japanese Fire and Disaster Management Agency has revised the casualty count from Monday night’s 7.5-magnitude earthquake, confirming that 51 people were injured across Hokkaido, Aomori and Iwate provinces. Seven of those were rated as suffering severe injuries.
In the aftermath of that powerful tremor, Japan’s weather agency issued its first-ever top-tier warning for a “megaquake”, or an earthquake of magnitude 8 or greater. The megaquake advisory covers 182 municipalities across seven prefectures along the Pacific coast, from Hokkaido down to Chiba.
Officials have said that there has been no significant damage to major infrastructure and that nuclear power plant facilities were also unscathed after Monday’s earthquake.
Municipalities ramped up their preparedness in the wake of the megaquake advisory, which is in effect until 16 December.
Local governments updated residents, checked emergency stocks, and tested communication systems. Citizens were urged to keep grab-and-go emergency megaquake kits ready.
An employee uses adhesive tape to reinforce bottles and glasses to prevent them from falling at a pub (JIJI Press/AFP via Getty Images)
Officials also issued public safety recommendations and urged families to sleep in the same room as elderly or vulnerable members and wear day clothes at night to allow faster evacuation in case of any emergency.
Most schools across northern Japan resumed classes today. Students shared stories of fear during the quake, but said daily life was slowly returning to normal. Drills and evacuation reviews took place in many classrooms, according to local reports.
Some examples of damage have been reported after Monday’s quake, including to the historic Chojasan Shinra Shrine in Aomori’s Hachinohe city.
A pub owner in Hachinohe was seen taping bottles to the wall after the quake smashed untethered glass items.
In the wake of Monday’s 7.5-magnitude earthquake, social media saw a wave of fake videos and conspiracy theories about the quake’s cause. Officials urged the public to rely only on verified government sources.
Even though the megaquake advisory remains in place and citizens have been urged to stay vigilant, there is currently no need for citizens to evacuate.
Expert says do not ignore possibility of a megaquake Wednesday 10 December 2025 10:20 , Maroosha Muzaffar
Japanese authorities estimate that there is a 1 per cent chance of a massive earthquake occurring within the next week.
The Japanese Meteorological Agency (JMA) has issued its highest-level warning that a megaquake could follow yesterday’s 7.5-magnitude tremor.
Authorities urged anyone living near the Pacific coast to remain vigilant throughout the coming week and to prepare evacuation plans in case they need to flee their homes.
A sign displays information about a road closure due to the earthquake on a highway in Chitose, Hokkaido, Japan, 9 December 2025, in this photo taken by Kyodo (via REUTERS)
Professor Sekiya Naoya of the University of Tokyo’s Graduate School warns that if such a disaster were to strike, up to 200,000 lives could be at risk.
According to NHK Japan, he urged the public not to ignore this possibility, and added that the Japan Meteorological Agency’s advisory should serve as a reminder to review emergency plans and preparedness measures.
Students returning to school today recount the horrors of Monday’s earthquake as life slowly returns to normal Wednesday 10 December 2025 09:40 , Maroosha Muzaffar
Students were seen returning to their classrooms in northern Japan today after Monday’s magnitude-7.5 earthquake.
“Yesterday, I discussed with my family what we should do when the next earthquake strikes. I’m happy to see my friends,” Aren Shirayama, a 9-year-old third grader told Japan’s Mainichi.
Sixth-grader Asahi Yoshida, 12, shared: “I was scared since furniture toppled over and dishes were scattered. I spent time yesterday talking with my family and playing games. Our usual daily life has returned.”
This aerial photo shows a vehicle sitting on a damaged road in Tohoku town, Aomori prefecture, northern Japan Tuesday, 9 December 2025, following a powerful earthquake (AP)
Meanwhile, teachers at an elementary school in Shinhidaka, along southern Hokkaido’s coast, reviewed evacuation procedures during morning drills.
Naomi Kumagai, the school’s vice principal, said: “Children appeared to be the same as usual.”
Authorities continue to monitor the region amid a megaquake advisory.
Number of people injured by 7.5-magnitude earthquake rises to 51 Wednesday 10 December 2025 09:01 , Maroosha Muzaffar
Monday night’s magnitude-7.5 earthquake injured at least 51 people, according to the Fire and Disaster Management Agency. Earlier, the agency had said 34 were injured.
Eleven of them are from Hokkaido, 36 are in Aomori, and four are in Iwate prefecture.
Officials said that as of Wednesday morning, seven of the injuries were considered severe.
Hachinohe pub secures bottles as megaquake advisory issued Wednesday 10 December 2025 08:20 , Maroosha Muzaffar
An employee at a local pub in Hachinohe City in Aomori Prefecture was seen securing bottles and glasses with tape at the pub after Monday’s magnitude-7.5 earthquake struck off northern Japan, scattering dishes and other items.
An employee uses adhesive tape to reinforce bottles and glasses to prevent them from falling at a pub (JIJI Press/AFP via Getty Images)
The nation’s weather agency has also issued a rare megaquake advisory and asked the public to stay vigilant for the next week.
The quake on Monday night injured more than 30 people, damaged roads, and left thousands without power amid freezing temperatures.
Historic shrine in Aomori Prefecture sustains significant damage in Monday’s magnitude-7.5 earthquake Wednesday 10 December 2025 07:40 , Maroosha Muzaffar
In Hachinohe City in Aomori Prefecture, Chojasan Shinra Shrine sustained significant damage from the magnitude 7.5 earthquake on Monday, local reports said.
Large stone lanterns lining both sides of the shrine were toppled, according to Nippon TV, while the torii gate’s historical signboard was left leaning.
The roof over the offering box area has also collapsed, and the glass doors of the main hall were shattered.
A sign displays information about a road closure due to the earthquake on a highway in Chitose, Hokkaido, Japan, 9 December 2025, in this photo taken by Kyodo (via REUTERS)
In the inner sanctuary, the outlet reported, a hole has appeared in the historic structure that was last renovated in 1827.
The shrine staff said that they had just begun preparations for the New Year, but these have now been disrupted by the destruction caused by the earthquake.
Chojasan Shinra Shrine is one of three shrines that participate in Hachinohe’s annual “Three Shrine Festival”.
The festival runs from 31 July to 4 August, during which portable shrines called o-mikoshi are carried from Ogami Shrine to Chojasan Shinra Shrine.
On 2 August, the shrine also hosts a Kagami-style Dakyu tournament. Dakyu is a traditional Japanese horseback team sport similar to polo, and it is now practised in only three locations in Japan, according to the shrine website.
Officials urge public to keep emergency megaquake kit ready Wednesday 10 December 2025 07:00 , Maroosha Muzaffar
In the aftermath of Monday’s earthquake, officials are urging residents to keep an emergency bag stocked with several days’ worth of essential supplies, including food, water, medication, sturdy shoes and protective helmets.
They say the precaution is especially important as aftershocks remain possible and a government advisory warns of the slim but real chance of a larger quake.
Authorities have stressed that having a ready-to-grab kit can help people evacuate quickly and safely if conditions worsen or if new alerts are issued in the coming days.
Schools in northern and northeastern Japan reopen today Wednesday 10 December 2025 06:20 , Maroosha Muzaffar
Most schools in northeastern and northern Japan reopened today after closures caused by Monday night’s magnitude-7.5 earthquake off Aomori Prefecture, though a rare megaquake alert remains in effect for coastal regions from Hokkaido to Chiba.
Over 300 schools across five prefectures – Hokkaido, Aomori, Iwate, Miyagi, and Fukushima – were closed yesterday, with some remaining shut due to quake damage.
Students have been asked to be ready for immediate evacuation for about a week.
At reopened schools, including a public elementary in Hachinohe, Aomori, no injuries were reported, and children quickly returned to normal routines, Mainichi reported.
A worker clears debris at a shopping centre damaged by the earthquake in Hachinohe City, Aomori Prefecture, on 9 December 2025 (JIJI Press/AFP via Getty Images)
Teachers conducted drills and reviewed evacuation procedures, while students shared experiences of fear and family preparedness following the quake, the outlet reported.
The Japan Meteorological Agency had issued tsunami warnings for parts of Hokkaido, Aomori, and Iwate, with Kuji Port recording a 70-centimetre wave.
The ongoing special alert for a potential massive quake covers 182 municipalities in seven prefectures.
What are ‘Long Period Ground Motions’? Wednesday 10 December 2025 05:40 , Maroosha Muzaffar
Many areas of eastern Japan felt unusually long, swaying movements after Monday’s magnitude-7.5 quake near Aomori.
These “long-period ground motions” (LPGMs) are slow, rolling shakes that travel far from the epicentre and are especially noticeable on the upper floors of tall buildings.
They occur when long-duration seismic waves resonate with a building’s natural swaying frequency, which can amplify shaking and potentially cause damage.
This aerial photo shows a vehicle sitting on a damaged road in Tohoku town, Aomori prefecture, northern Japan Tuesday, 9 December 2025, following a powerful earthquake (AP)
Such shaking can last minutes – much longer than typical quakes – and became widely recognised after the 2011 Great East Japan Earthquake, when high-rises in Tokyo swayed significantly.
On Monday, the strongest long-period motion observed was Level 3 in Rokkasho, Aomori, meaning it was difficult to stand and unsecured furniture could topple.
Most areas saw Level 1 or 2, which caused noticeable indoor shaking and slight movement of objects.
People urged to sleep fully clothed amid megaquake advisory Wednesday 10 December 2025 05:00 , Maroosha Muzaffar
Officials are urging people to stay calm, stay prepared, and continue their daily routines amid the megaquake advisory.
The megaquake advisory does not predict a specific time or place for a major quake, but residents are encouraged to review evacuation plans and keep emergency supplies ready.
Authorities have advised having a packed emergency bag, securing furniture, sleeping in day clothes and not pyjamas for quick evacuation, and coordinating plans with family members.
The advisory, which follows a 7.5-magnitude quake on Monday night, is due to be in place until 16 December.
How likely is it for a megaquake to strike? Wednesday 10 December 2025 04:20 , Maroosha Muzaffar
Megaquakes are inherently unpredictable and can strike anywhere in Japan without warning.
However, the Japanese weather agency has said that they are sometimes preceded by a “somewhat smaller” earthquake of magnitude 7 or higher.
Historically, two major quakes were triggered just one to two days after such precursor events.
For example, a magnitude-7.3 quake off Sanriku in 2011 was followed two days later by the magnitude-9.0 Great East Japan Earthquake.
(Reuters)
Similarly, in 1963, a magnitude-7 quake southeast of Etorofu Island was followed 18 hours later by a magnitude 8.5 event.
Despite these cases, the agency has said that – based on global earthquake statistics – the likelihood of a major quake occurring after such an advisory is issued is only about one per cent, or roughly once in every 100 advisories.
How long will Japan be on megaquake alert? Wednesday 10 December 2025 03:40 , Maroosha Muzaffar
Following Monday’s magnitude 7.5 earthquake off the eastern coast of Aomori Prefecture, the Japan Meteorological Agency (JMA) issued its first special advisory for potential follow-up earthquakes and tsunamis in the Hokkaido and Sanriku coastal areas.
According to local media outlets, the government recommends that people remain on alert for about a week.
The risk of additional quakes and tsunamis is highest immediately after the initial major quake and gradually decreases over time.
A torii gate at the entrance of Yasaka Shrine is seen after it collapsed onto a sidewalk in Hachinohe City in Aomori Prefecture on 9 December 2025, following a 7.5 magnitude earthquake off northern Japan (Jiji/AFP/Getty)
While the one-week period is not based on precise scientific data, it serves as a guideline for heightened vigilance, The Japan Times noted.
Authorities have said that there is no need to stop daily activities, but residents should double-check their usual earthquake preparations during this period.
The advisory is officially called the “Off the Coast of Hokkaido and Sanriku Subsequent Earthquake Advisory”.
Recap: Japan issues a megaquake advisory Wednesday 10 December 2025 03:00 , Shaheena Uddin
The Japan Meteorological Agency says Monday’s powerful quake temporarily increased potential risks in the regions of Hokkaido and the Sanriku coast.
That’s where the Pacific Plate beneath Japan forms the two trenches — the Japan Trench and Chishima Trench — that have caused many large quakes in the past.
Experts say the deadly quake and tsunami in 2011 was caused by movement associated with the Japan Trench. It spans from off the eastern coast of Chiba to Aomori, and the Chishima Trench goes from the eastern coast of Hokkaido to the northern islands and the Kurils.
In explaining the advisory, the JMA said the magnitude 9.0 quake on 11 March 2011, that devastated large swaths of Japan’s northern coast occurred two days after a magnitude 7.3 temblor that occurred at the Japan Trench off the eastern coast of Iwate, one of the hardest-hit areas in that disaster as well as in Monday’s quake.
The 2011 quake caused a tsunami that battered northern coastal towns in Iwate, Miyagi and Fukushima prefectures.
The tsunami, which topped 15 meters (50 feet) in some areas, slammed into and destroyed the Fukushima Daiichi nuclear power plant. That created deep fears of radiation that linger to this day.
In pictures: fires that broke out after the earthquake struck Wednesday 10 December 2025 02:30 , Shaheena Uddin
A general view shows the scene of a fire that broke out after an earthquake in Aomori City on Tuesday.
At least 10 people were reported injured, but there appeared to be no major damage after a big quake rocked northern Japan and triggered tsunami waves up to 70 centimetres high.
A general view shows the scene of a fire that broke out after an earthquake in Aomori City on 9 December 2025 (JIJI Press/AFP via Getty Images)This aerial photo shows a vehicle sitting on a damaged road in Tohoku town, Aomori prefecture, northern Japan Tuesday, 9 December 2025, following a powerful earthquake (AP)The damaged wall of a building in Hachinohe in Aomori Prefecture, northeastern Japan, on December 9, 2025, following a strong earthquake the previous night in this photo taken by Kyodo. (Reuters) 800 homes were without electricity Wednesday 10 December 2025 01:30 , Shaheena Uddin
Chief cabinet secretary Minoru Kihara said about 800 homes were without electricity due to the quake.
Moreover, Shinkansen bullet trains and some local lines were suspended in parts of the region in the early hours of Tuesday. East Japan Railway said bullet trains resumed operation in the region later Tuesday.
Power was mostly restored by Tuesday morning, according to the Tohoku Electric Power Co.
About 480 residents sheltered at Hachinohe Air Base and 18 defense helicopters were mobilized for a damage assessment, according to Defense Minister Shinjiro Koizumi.
About 200 passengers were stranded for the night at New Chitose Airport in Hokkaido, NHK, a Japanese broadcaster reported.
Part of a domestic terminal building was unusable Tuesday after parts of its ceiling cracked and fell to the floor, the airport operator said.
Japan assesses damage from 7.5 magnitude quake that injured 34 Tuesday 9 December 2025 23:30 , Shaheena Uddin
Today Japan was assessing damage following the late-night 7.5 magnitude earthquake which injured 34.
The quake also caused light damage and a tsunami in Pacific coastal communities.
Authorities have been cautioning people of potential aftershocks.
Prime minister Sanae Takaichi told reporters an emergency task force was formed to urgently assess damage. “We are putting people’s lives first and doing everything we can,” she said.
At a parliamentary session Tuesday, Takaichi pledged the government would continue its utmost effort and reminded people they have to protect their own lives.
Watch moment 7.5-magnitude earthquake hits Japan Tuesday 9 December 2025 22:30 , Shaheena Uddin
What is a megaquake? Japan issues first official warning for disaster that could kills tens of thousands Tuesday 9 December 2025 20:00 , Alex Croft
Japan’s weather agency has issued a megaquake warning, the highest level of earthquake alert, hours after a 7.5 magnitude tremor struck the country.
Residents living near the Pacific coast have been urged by authorities to remain vigilant throughout the coming week and prepare evacuation plans in case they need to flee their homes.
At least 33 people were injured in the earthquake on Monday night, with waves reaching up to 70cm seen in several coastal communities.
But what actually is a megaquake? Read more here…
What is a megaquake? Japan issues warning for disaster that could kills thousands
Magnitude 6.6 and 5.1 earthquakes recorded in the hours following 7.5 magnitude earthquake Tuesday 9 December 2025 19:31 , Alex Croft
Smaller aftershocks continued today in northern and central Japan, hours after the 7.5-magnitude earthquake on Monday night.
According to the US Geological Survey, a magnitude 6.6 aftershock struck within hours of the initial earthquake, followed by another measuring magnitude 5.1.
In the less than 24 hours since the earthquake, at least 10 aftershocks of magnitude 1.5 or higher have been recorded in Japan.
Aftershocks were felt across a wide area of northern and central Japan, according to NHK Japan.
Residents describe fear during late-night Japan earthquake – ICYMI Tuesday 9 December 2025 19:00 , Alex Croft
In the aftermath of the powerful late-night quake, residents across northeastern Japan recounted moments of fear as they rushed to safety in cold conditions.
Many were jolted awake by the violent shaking, including a man in his 40s from Hachinohe, Aomori Prefecture.
He told Japan’s Mainichi: “I was asleep when shaking began as if I suddenly got hit from beneath. After that, shaking continued both vertically and laterally for a long time.”
In nearby Kamaishi, Iwate Prefecture, a 75-year-old woman preparing for bed fled to higher ground in a car driven by her daughter.
“I debated whether I should leave. I was afraid of a bear popping up, my husband needs care and we have a cat.”
A man clears the debris from a powerful earthquake at a commercial facility in Hachinohe, Aomori prefecture, northern Japan, Tuesday, 9 December 2025 (AP)
A vehicle is seen on a collapsed road in Tohoku town in Aomori Prefecture on 9 December 2025, following a 7.5 magnitude earthquake off northern Japan (JIJI Press/AFP via Getty Images) Japan urges public to rely on government sources for information related to earthquakes Tuesday 9 December 2025 18:29 , Alex Croft
Chief cabinet secretary Kihara Minoru has urged the public to rely on official government sources and trusted media outlets for updates on earthquakes.
He told reporters that misinformation often spreads quickly during times of crisis, creating confusion among people.
In response to the current situation, the Japanese government has activated a task force at the crisis management centre in the Prime Minister’s Office.
Japan witnessed more than 10 aftershocks in the hours following the massive earthquake late on Monday night.
Authorities have urged people to stay vigilant for the possibility of a megaquake in the next seven days.
A megaquake could cause a 98-foot tsunami and kill nearly 200,000 Tuesday 9 December 2025 18:00 , Alex Croft
Japanese government estimates have laid bare the scale of damage which a megaquake could cause in Japan.
Another offshore megaquake in the Hokkaido-Sanriku area could cause up to a 30-meter (98-foot) tsunami in the region, kill as many as 199,000 people, destroy up to 220,000 houses and buildings, and cause estimated economic damages of up to 31 trillion yen ($198 billion).
The government says as many as 42,000 people could suffer from hypothermia in the winter.
The areas covered by the advisory extend across 182 municipalities from Hokkaido to Chiba Prefecture.
Japan’s separate advisory for an even more damaging megaquake stemming from the Nankai Trough, which affects the southern half of Japan’s Pacific coast, was activated for the first time last August after a magnitude 7.1 quake occurred off the eastern coast of Miyazaki.
In a 2013 damage estimate for a possible Nankai Trough megaquake, the government said a magnitude 9.1 quake could generate a tsunami exceeding 10 meters (33 feet) within minutes, killing as many as 323,000 people, destroying more than 2 million buildings and causing economic damage exceeding 200 trillion yen ($1.28 trillion) in the region.
Watch: Animation shows 7.5 magnitude earthquake striking Japan’s coast, triggering tsunami warning Tuesday 9 December 2025 17:29 , Alex Croft Recap: Japan issues a megaquake advisory Tuesday 9 December 2025 17:01 , Alex Croft
The Japan Meteorological Agency says Monday’s powerful quake temporarily increased potential risks in the regions of Hokkaido and the Sanriku coast.
That’s where the Pacific Plate beneath Japan forms the two trenches — the Japan Trench and Chishima Trench — that have caused many large quakes in the past.
Experts say the deadly quake and tsunami in 2011 was caused by movement associated with the Japan Trench. It spans from off the eastern coast of Chiba to Aomori, and the Chishima Trench goes from the eastern coast of Hokkaido to the northern islands and the Kurils.
In explaining the advisory, the JMA said the magnitude 9.0 quake on 11 March 2011, that devastated large swaths of Japan’s northern coast occurred two days after a magnitude 7.3 temblor that occurred at the Japan Trench off the eastern coast of Iwate, one of the hardest-hit areas in that disaster as well as in Monday’s quake.
The 2011 quake caused a tsunami that battered northern coastal towns in Iwate, Miyagi and Fukushima prefectures.
The tsunami, which topped 15 meters (50 feet) in some areas, slammed into and destroyed the Fukushima Daiichi nuclear power plant. That created deep fears of radiation that linger to this day.
How long will Japan be on megaquake alert? Tuesday 9 December 2025 16:30 , Maroosha Muzaffar
Following Monday’s magnitude 7.5 earthquake off the eastern coast of Aomori Prefecture, the Japan Meteorological Agency (JMA) issued its first special advisory for potential follow-up earthquakes and tsunamis in the Hokkaido and Sanriku coastal areas.
According to local media outlets, the government recommends that people remain on alert for about a week.
The risk of additional quakes and tsunamis is highest immediately after the initial major quake and gradually decreases over time.
People cover the broken glasses with a blue sheet at a beauty salon in Hachinohe, Aomori prefecture, northern Japan Tuesday, 9 December 2025, following a powerful earthquake on late Monday
While the one-week period is not based on precise scientific data, it serves as a guideline for heightened vigilance, The Japan Times noted.
Authorities have said that there is no need to stop daily activities, but residents should double-check their usual earthquake preparations during this period.
The advisory is officially called the “Off the Coast of Hokkaido and Sanriku Subsequent Earthquake Advisory”.
Nuclear power stations unscathed, officials say Tuesday 9 December 2025 15:58 , Maroosha Muzaffar
Despite the strong earthquake, officials reported no major damage to infrastructure, and Japan’s network of nuclear power stations showed no signs of irregularities after the quake.
The International Atomic Energy Agency added reassurance in a post on X, noting that Tokyo had informed the agency that all nuclear facilities – including the Fukushima Daiichi site – were operating normally.
The IAEA has been informed by Japan that there are no abnormalities so far at the Fukushima NPP site following the earthquake and tsunami advisory in Japan; discharge of ALPS treated water has been temporarily suspended at 11:42 pm local time today as a precautionary step. pic.twitter.com/bNJef2nhhW
— IAEA – International Atomic Energy Agency ⚛️ (@iaeaorg) December 8, 2025
As an added safety step, the plant temporarily paused its release of treated wastewater, but the IAEA said this was a precautionary measure rather than a response to any detected problem.
Aomori quake produced slow, powerful seismic waves Tuesday 9 December 2025 15:32 , Maroosha Muzaffar
The earthquake on Monday struck at around 11.15pm local time and generated tremors strong enough to produce what are known as long-period ground motions (LPGMs), slow, powerful seismic waves that are amplified over long distances.
LPGMs can be particularly dangerous because they resonate with tall buildings, causing them to sway violently.
Director of Earthquake and Volcanic Engineering Affairs Division at the Japan Meteorological Agency, Satoshi Harada holds a press conference in Tokyo on 9 December 2025, after the magnitude 7.5 quake struck off Misawa on Japan’s Pacific coast (JIJI Press/AFP via Getty Images)
In some areas of Aomori Prefecture, the shaking was strong enough that it became difficult for people in tall buildings to remain standing.
Authorities initially issued tsunami warnings for Iwate Prefecture and parts of Hokkaido and Aomori, which were later downgraded to advisories.
All advisories were lifted by 6.20am today.
Japanese government warns megaquake could kill 300,000 and halve GDP Tuesday 9 December 2025 15:00 , Maroosha Muzaffar
Japan on Tuesday issued its first-ever alert warning that a megaquake could follow the previous night’s 7.5-magnitude offshore earthquake as authorities cautioned that the coming days would be critical for coastal regions facing an elevated risk of aftershocks.
The Japan Meteorological Agency said there was an increased possibility of an earthquake of magnitude 8 or stronger along the Japan Trench and the Chishima Trench, marking its first activation ever of the top-tier alert since the system was introduced in 2022.
The alert covers a broad stretch of the Pacific coast from Hokkaido to Chiba.
Authorities urged the public to review evacuation routes, secure heavy furniture, and prepare emergency supplies, stressing that communities should remain “vigilant through next week” even in the absence of any evacuation order.
The earthquake on Monday struck at around 11.15pm local time, about 50 miles off the coast of Aomori, and generated tremors strong enough to produce “long-period ground motions”, slow swinging waves that left high-rise buildings swaying violently.
Read more here:
Japanese government warns megaquake could kill 300,000 and halve GDP
Watch: Moment powerful 7.5-magnitude earthquake hit Japan Tuesday 9 December 2025 14:41 , Maroosha Muzaffar
Where in Japan would a potential megaquake strike? Tuesday 9 December 2025 14:19 , Maroosha Muzaffar
Japan’s Meteorological Agency warned today that a megaquake of magnitude 8 or higher could strike along the Japan Trench and Chishima Trench off Hokkaido.
The agency has issued its first-ever alert of this kind, covering coastal areas from Hokkaido to Chiba Prefecture.
Officials have urged residents to check evacuation routes, secure furniture, and prepare emergency supplies, including food, water, and portable toilets.
Although they have not ordered evacuations, they advised people to remain vigilant through next week.
Morikubo Tsukasa, director of disaster management at the Cabinet Office, told reporters that global earthquake data indicates a possibility, not a prediction, of a larger tremor.
Is it safe to travel to Japan? Megaquake warning sparked by 7.5-magnitude tremor Tuesday 9 December 2025 14:00 , Maroosha Muzaffar
Japan’s weather agency has warned that another large-scale earthquake could follow the 7.5-magnitude tremor which hit the country on Monday.
The earthquake has left at least 33 people injured and led to tsunami warnings.
All tsunami alerts have been lifted, yet the Japan Meteorological Agency (JMA) has warned that powerful earthquakes could follow the tremor, calling on people to be on alert for at least a week.
Train services were temporarily suspended, traffic jams were reported, and flights were cancelled at New Chitose airport following the quake.
Here is the latest travel advice and what you need to know following the large earthquake in northern Japan:
Is it safe to travel to Japan? Advice following a 7.5-magnitude earthquake
Expert says do not ignore possibility of a megaquake Tuesday 9 December 2025 13:30 , Maroosha Muzaffar
Japanese authorities estimate that there is a 1 per cent chance of a massive earthquake occurring within the next week.
The Japanese Meteorological Agency (JMA) has issued its highest-level warning that a megaquake could follow yesterday’s 7.5-magnitude tremor.
Authorities urged anyone living near the Pacific coast to remain vigilant throughout the coming week and to prepare evacuation plans in case they need to flee their homes.
A general view shows the scene of a fire that broke out after an earthquake in Aomori City on 9 December 2025 (JIJI Press/AFP via Getty Images)
Professor Sekiya Naoya of the University of Tokyo’s Graduate School warns that if such a disaster were to strike, up to 200,000 lives could be at risk.
According to NHK Japan, he urged the public not to ignore this possibility, and added that the Japan Meteorological Agency’s advisory should serve as a reminder to review emergency plans and preparedness measures.
Japan urges public to rely on government sources for information related to earthquakes Tuesday 9 December 2025 13:00 , Maroosha Muzaffar
Chief cabinet secretary Kihara Minoru has urged the public to rely on official government sources and trusted media outlets for updates on earthquakes.
He told reporters that misinformation often spreads quickly during times of crisis, creating confusion among people.
This video from inside a house shows the exact moment Japan was rocked by a 7.6 magnitude earthquake pic.twitter.com/WiLcib30F1
— Surajit (@surajit_ghosh2) December 9, 2025
In response to the current situation, the Japanese government has activated a task force at the crisis management centre in the Prime Minister’s Office.
Japan witnessed more than 10 aftershocks in the hours following the massive earthquake late on Monday night.
Authorities have urged people to stay vigilant for the possibility of a megaquake in the next seven days.
Residents describe fear during late-night Japan earthquake Tuesday 9 December 2025 12:30 , Maroosha Muzaffar
In the aftermath of the powerful late-night quake, residents across northeastern Japan recounted moments of fear as they rushed to safety in cold conditions.
Many were jolted awake by the violent shaking, including a man in his 40s from Hachinohe, Aomori Prefecture.
He told Japan’s Mainichi: “I was asleep when shaking began as if I suddenly got hit from beneath. After that, shaking continued both vertically and laterally for a long time.”
A tsunami warning flashes over live footage of a waterfront area, on a television screen in Sapporo, in Japan’s northern Hokkaido prefecture, on 9 December 2025. Later, tsunami warnings were lifted (AFP via Getty Images)
In nearby Kamaishi, Iwate Prefecture, a 75-year-old woman preparing for bed fled to higher ground in a car driven by her daughter.
“I debated whether I should leave. I was afraid of a bear popping up, my husband needs care and we have a cat.”
PM Takaichi urges residents to take ‘disaster-prevention measures’ amid megaquake fears Tuesday 9 December 2025 12:00 , Maroosha Muzaffar
Prime minister Sanae Takaichi told reporters today: “Due to the earthquake, the likelihood of a major earthquake occurring in the Hokkaido to the Sanriku offshore region is assessed to be higher than during normal times.”
The Japan Meteorological Agency has issued a warning for Hokkaido and the Sanriku coast, including Aomori, Miyagi, and Iwate, advising residents to stay alert for possible larger quakes in the coming days.
Sanae Takaichi
Takaichi urged people to take disaster-prevention measures. “While fully understanding that it remains uncertain whether a major earthquake will actually occur, please take appropriate disaster-prevention measures based on the principle that you are responsible for protecting your own life,” she was quoted as saying by The Japan Times.
Takaichi urged residents to continue their day-to-day activities but asked them to remain vigilant for updates from Japan’s weather agency and local officials, while reviewing and reinforcing their evacuation plans in case a larger earthquake occurs.
Magnitude 6.6 and 5.1 earthquakes recorded in the hours following 7.5 magnitude earthquake Tuesday 9 December 2025 11:30 , Maroosha Muzaffar
Smaller aftershocks continued today in northern and central Japan, hours after the 7.5-magnitude earthquake.
According to the US Geological Survey, a magnitude 6.6 aftershock struck within hours of the initial earthquake, followed by another measuring magnitude 5.1.
In the less than 24 hours since Monday night’s earthquake, at least 10 aftershocks of magnitude 1.5 or higher have been recorded in Japan.
Aftershocks were felt across a wide area of northern and central Japan, according to NHK Japan.
More than 100 schools closed today in Aomori prefecture Tuesday 9 December 2025 11:00 , Maroosha Muzaffar
This morning, Japan’s ministry of education reported that 139 public schools in Aomori Prefecture remained closed due to the effects of the earthquake.
Authorities have not yet confirmed any injuries among students.
A man clears the debris from a powerful earthquake at a commercial facility in Hachinohe, Aomori prefecture, northern Japan, Tuesday, 9 December 2025
At least 33 people were hurt in the powerful quake yesterday night and the prime minister Sanae Takaichi cautioned that similar or even stronger tremors could strike Pacific coastal areas in the next one week or so.
The Japan Meteorological Agency has issued its first top-tier alert for a possible megaquake within the next seven days.
Japan warns megaquake could bring 3-metre tsunamis Tuesday 9 December 2025 10:30 , Maroosha Muzaffar
Japan’s authorities issued a new advisory warning of the threat of a possible megaquake in the aftermath of yesterday’s 7.5-magnitude tremor.
Effective for 182 municipalities across seven prefectures, primarily along the Pacific coast from Hokkaido to Chiba Prefecture, the warning says stronger aftershocks or tsunamis up to 3 metres could occur, and is in effect until 16 December.
While the advisory does not mandate evacuations, it does urge heightened vigilance.
A vehicle is seen on a collapsed road in Tohoku town in Aomori Prefecture on 9 December 2025, following a 7.5 magnitude earthquake off northern Japan (JIJI Press/AFP via Getty Images)
“Some people may feel confused by this first-of-its-kind advisory, but we ask everyone to calmly prepare for the possibility of another earthquake,” a Cabinet Office official said, according to The Asahi Shimbun.
“Essentially, social and economic activities will continue, so schools and public transportation should operate as usual.”
Tremors were felt across a wide area from Hokkaido to the western Kinki region, with the strongest intensities in Aomori, leading to temporary suspension of Tohoku Shinkansen services, school closures, and water outages in about 1,360 households, authorities said.
Tsunami warnings issued after the main quake were downgraded and lifted by early morning today.
Transport services disrupted due to earthquake Tuesday 9 December 2025 10:00 , Maroosha Muzaffar
Transport services were partially disrupted on Tuesday after a massive earthquake struck northeastern Japan, local reports said.
East Japan Railway Company has suspended Tohoku Shinkansen bullet train services between Morioka and Shin-Aomori stations.
The company is conducting inspections for potential track damage and aims to resume operations by 3.00pm local time today.
Both All Nippon Airways (ANA) and Japan Airlines (JAL) reported that flights are operating as usual starting Tuesday, with no major disruptions.
Japan’s megaquake probability was raised earlier this year Tuesday 9 December 2025 09:30 , Maroosha Muzaffar
Japan’s weather agency issued its highest-level warning that a megaquake could follow Monday’s 7.5-magnitude tremor.
Earlier this year, the Japanese government’s earthquake panel raised the probability of a “megaquake” (magnitude 8 or higher) occurring within the next 30 years to over 80 per cent, up from a previous estimate of 70–80 per cent.
The most likely location is the Nankai Trough, an 800km undersea trench off Japan’s Pacific coast, where such a quake could cause widespread destruction and trigger a major tsunami.
University of Tokyo seismologist Naoshi Hirata, left, a member of an expert panel, speaks during a press conference on the possible Nankai Trough earthquake, at Japan Meteorological Agency in Tokyo, on 8 August 2024 (Kyodo News)
Officials stress that this probability means a megaquake could occur at any time.
Megaquakes in the Nankai Trough have occurred every 100 to 200 years over the past 1,400 years, with the most recent one recorded in 1946, according to Japan’s Headquarters for Earthquake Research Promotion.
The earthquake, which was felt throughout Japan, destroyed 36,000 houses in the southern part of Honshu alone.
Japan hit by at least 10 aftershocks in less than 24 hours Tuesday 9 December 2025 09:00 , Maroosha Muzaffar
In the less than 24 hours since Monday night’s earthquake, at least 10 aftershocks of magnitude 1.5 or higher have been recorded in Japan.
Aftershocks were felt across a wide area of northern and central Japan, according to NHK Japan.
The strongest tremors – of intensity 4 – were reported in parts of Aomori (Hiranai, Hachinohe, Noheji, Gonohe, Aomori-Nambu) and Iwate (Morioka, Hachimantai, Iwate).
Aftershocks of intensity 3 shook Aomori, Iwate, Miyagi, Akita, and Hokkaido, while intensity 2 tremors reached towns and cities across Aomori, Iwate, Hokkaido, Miyagi, Akita, Yamagata, Fukushima, Ibaraki, Tochigi, Saitama, and Niigata.
Over the past week, an additional 15 quakes have been reported, while 88 earthquakes have shaken the country during the last 30 days, according to earthquaketrack.com.
Japan is one of the most earthquake-prone countries in the world, sitting on the Pacific “Ring of Fire”, an area of heightened seismic activity.
AloJapan.com