Buildings Shake, Trains Halt, Scientists Warn of Bigger Quake Ahead
News Report By Y-Trendz
Tokyo/Aomori/Iwate, June 26, 2026
Northern Japan was jolted awake on the morning of June 25 by one of the most powerful earthquakes to strike the region this year. At least ten people were injured after a magnitude 7.2 earthquake hit northern Japan on Thursday morning, registering a rare upper 6 on the Japanese seismic intensity scale of 7 in the town of Hashikami, Aomori Prefecture. The tremor, which struck during peak morning rush hour, sent shockwaves of fear through communities still carrying the psychological scars of past disasters — and prompted urgent warnings from scientists about the possibility of an even larger earthquake to come.
The Earthquake: When and Where
The Japan Meteorological Agency (JMA) recorded the quake at approximately 7:30 AM, with its epicentre 44 kilometres below the seafloor off Iwate Prefecture. The quake had a magnitude of 7.2, upgraded from an initial reading of 6.9, the Japan Meteorological Agency said. The U.S. Geological Survey also reported the quake, giving its magnitude as 6.9.
The city of Hachinohe in Aomori Prefecture registered a lower 6 on the seismic intensity scale, while some cities in Iwate Prefecture registered an upper 5. An intensity of upper 6 means people can only crawl and are unable to walk during the earthquake, and unsecured furniture will topple over, according to the JMA.
The shaking was felt far beyond the immediate epicentre. The temblor shook dozens of towns across northeastern Japan and was even mildly felt in the capital, Tokyo.
Human Impact: Fear, Injury, Disruption
In the town of Hashikami, a school principal recounted how her car shook sideways when the quake struck as she was driving to work. Children already gathered at the school were safe, she said, though some were crying in fear. The principal, Tomoko Nagane, told NHK that classes were cancelled for the day and all children returned home safely.
Eight people were injured in the northern prefectures of Aomori and Iwate, the Fire and Disaster Management Agency said. Japanese media had no report of life-threatening injuries, and the injuries that were reported were mainly from falling or being hit by falling objects. In Iwate Prefecture, a woman in her 90s sustained a minor injury after she fell.
Transport Disrupted Across the Tohoku Region
The earthquake brought major disruption to transport networks across northeastern Japan during one of the busiest periods of the day. The Tohoku Shinkansen line halted operations earlier in the day, but services were resumed in the afternoon. Numerous train lines in Iwate and Aomori prefectures were suspended due to the quake, with no indication as to when they would resume.
The East Japan Railway Co., which operates trains in northeastern regions, said some bullet trains and local lines were temporarily suspended for safety checks. Images from JR Morioka Station showed staff addressing stranded passengers while departure boards displayed a cascade of suspended services.
Nuclear Facilities: No Damage Reported
In a country still sensitised to the dangers of nuclear incidents after the 2011 Fukushima disaster, the safety of nuclear facilities was among the first concerns addressed by authorities. Nuclear power plants and facilities, including the Fukushima Daiichi plant, which was damaged by the 2011 massive quake and tsunami, and a spent fuel reprocessing plant in Aomori, have not reported any abnormalities from Thursday's earthquake, government spokesperson Minoru Kihara said.
No Tsunami Warning Issued
Despite the earthquake's considerable magnitude, authorities moved quickly to reassure coastal communities. No tsunami warning was issued. Speaking to reporters, Prime Minister Sanae Takaichi said that there was "no tsunami concern" and asked residents of the affected areas to remain vigilant for the possibility of another earthquake of similar magnitude.
In Tokyo, Prime Minister Takaichi told reporters that her government's emergency team is "putting people's lives first," while assessing information and preparing for relief operations, if needed. She urged residents in the affected regions to use caution against possible aftershocks.
Scientists Sound Alarm: A Bigger Quake Could Follow
Perhaps the most alarming aspect of Thursday's earthquake was not the tremor itself, but what scientists say it could be a precursor to. The event hit a zone the government's own earthquake research headquarters classifies as the highest-risk area in Japan for a megathrust earthquake.
JMA officials warned those in areas most affected by the quake — particularly those living near the Japan Trench and Kuril Trench — to be on alert for future earthquakes for up to a week. Following a large quake, there is a 10–20% chance that another major quake can occur in the same area, especially in the following two to three days.
Fumiaki Tomita, a geodesy expert at Tohoku University, pointed to afterslip — slow post-earthquake fault movement — as a possible factor. "Thursday's quake occurred near this afterslip area. It's possible that the afterslip placed stress on this area, causing the quake," Tomita said, adding the link had not yet been confirmed. He also warned that a larger event could follow: "Due to this earthquake, as well as the afterslip and other slow slip events occurring in the surrounding area, one possible scenario is that an earthquake of a similar scale to the 1994 quake, or an even larger magnitude 8-class earthquake, could occur."
The June 25 event is the latest in a sequence that began in November 2025, when a magnitude 7.7 quake struck the same region. A 7.5-magnitude tremor off eastern Aomori on December 8 triggered a week-long subsequent earthquake advisory, followed by another 7.7-magnitude event off the Sanriku coast on April 20.
Japan's Unending Seismic Reality
Japan, which sits on what is known as the Pacific Ring of Fire, is one of the world's most earthquake-prone areas. Thursday's earthquake is a stark reminder that for the people of Tohoku in particular — a region that suffered catastrophically in 2011 — the ground beneath their feet is never truly still. As scientists continue to monitor the afterslip zone and authorities urge public preparedness, Japan braces once more for what may yet come.
Report compiled from The Japan Times, Associated Press, PBS NewsHour, and Insurance Business Asia.
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