Last Updated on 3 weeks ago by TodayWhy Editorial
Update, July 30, 2026 (morning): Japan’s national government now says the confirmed death toll from the earthquake has risen to 28, according to Kyodo News, while Kumamoto prefecture’s own count and a separate scientific warning about a future Japanese megaquake add important new context. The “What Is the Confirmed Death Toll?”, “What Other Damage Has Been Reported?”, and “Why Are Scientists Now Warning of a Future Megaquake in Japan?” sections below cover what’s new.
Update, July 28, 2026 (evening): At least one person has died and rescue teams are still searching for several more at the collapsed Aeon Mall in Kashima. The original reporting on the earthquake itself remains below.
A magnitude 7.1 earthquake tore through southern Japan on July 28, 2026, triggering a tsunami warning, derailing a bullet train, and causing an explosion that partially collapsed a shopping mall packed with shoppers. Here’s what happened during the Kumamoto earthquake, why the mall came down, and why this region keeps getting hit so hard.
What Happened During the Kumamoto Earthquake?
The quake struck at around 4:27 p.m. local time, with its epicenter in the city of Uki, just south of Kumamoto on the southern island of Kyushu. The depth was shallow, about 10 kilometers, which is part of why the shaking felt so violent across such a wide area.
The Japan Meteorological Agency issued a tsunami warning for waves up to 1 meter for the Ariake and Yatsushiro Seas within minutes. It was lifted by early evening, but not before triggering evacuation orders for roughly 300,000 people along the coast, according to Al Jazeera’s reporting.
At least 50 people were injured, based on hospital reports carried by Japan’s public broadcaster NHK, with several more hurt when the tremor derailed a high-speed Kyushu Shinkansen train and, separately, a cargo train. Kyushu Electric Power said about 40,000 homes lost electricity, and at least 12 buildings collapsed across the affected prefectures.
Why Did the Aeon Mall Collapse and Explode?
The most alarming single incident happened at an Aeon shopping mall in the town of Kashima. Witnesses described hearing a loud explosion shortly after the quake hit, followed by a large plume of smoke. NHK footage showed the mall’s second floor had partially collapsed, with its ceiling and facade caved in and steel support beams exposed.
Aeon said customers and staff were evacuated immediately after the initial shaking, but the exact cause of the explosion that followed has not been confirmed. Local fire officials said the mall’s second floor “collapsed, leaving many people trapped inside.”
Malls and other large commercial buildings are especially vulnerable in earthquakes like this one because of their wide, open floor plans, which rely on long support columns rather than dense internal walls. When shaking hits a building’s resonant frequency, that kind of structure can fail suddenly rather than gradually, which may explain why a modern shopping center suffered such visible damage compared to smaller buildings nearby.
What Is the Confirmed Death Toll?
As of the morning of July 30, 2026, Japan’s national government puts the confirmed death toll from the earthquake at 28, according to Kyodo News. Chief Cabinet Secretary Minoru Kihara said the search-and-rescue effort remains “a race against time.”
Kumamoto prefecture’s own tally, based on figures reported by local municipalities, currently stands lower: 17 confirmed deaths, including 8 at the Nippon Paper Industries plant in Yatsushiro and 5 at the Aeon Mall in Kashima, plus 6 more people found showing no vital signs who have not yet been formally confirmed. Kihara explained the gap this way: the national count draws on data from police and fire departments, while the prefecture’s count is built from figures reported directly by individual municipalities, so the two totals update on different timelines.
Only one person remains missing at the Nippon Paper plant, down from earlier reports of several unaccounted for there. Authorities have repeatedly cautioned that the toll is likely to keep rising as crews continue working through collapsed buildings across the region.
What Other Damage Has Been Reported?
The Aeon Mall wasn’t the only site where people were trapped. At the Nippon Paper Industries plant in Yatsushiro, a chimney collapsed during the quake, trapping workers; as of July 30, eight deaths have been confirmed there and one person remains missing.
The earthquake also damaged Kumamoto Castle, one of Japan’s most recognizable historic landmarks, and partially collapsed a bridge in nearby Yatsushiro City. Elevated sections of the Kyushu Expressway suffered major structural damage, and Kumamoto Airport briefly closed its runway, forcing flight cancellations and diversions while inspectors checked for damage.
As of the morning of July 30, more than 10,000 people remained in evacuation shelters. About 23,000 households were still without electricity and roughly 75,000 households had no running water, according to Kumamoto prefecture. The high-speed Kyushu Shinkansen line between Kumamoto and Kagoshima-chuo stations remained suspended while operators assessed damage, though officials hoped to restore service between Chikugo-Funagoya station in Fukuoka and Kumamoto the same day. Chief Cabinet Secretary Minoru Kihara said Japan’s Self-Defense Force, fire services, and coast guard had all been deployed to support search-and-rescue operations.
Why Was This Earthquake So Powerful?
The quake registered as high as shindo 7 on Japan’s seismic intensity scale in the towns of Hikawa and Uki — the maximum possible reading, and the first time any earthquake in Japan has hit that level since the Noto Peninsula earthquake in January 2024. At shindo 7, people cannot remain standing, furniture is thrown into the air, and even reinforced concrete walls can fail.
A shindo 6-strong reading, one level down, was recorded in Yatsushiro, Uto, and parts of Kumamoto city itself. For comparison, most earthquakes that cause noticeable damage in the US register in the shindo 4 to 5 range on Japan’s scale; shindo 7 is reserved for the most destructive shaking a structure can experience and survive.
Why Does Kumamoto Keep Getting Hit This Hard?
Kumamoto sits on a dense web of active fault lines running through Kyushu, and this isn’t the region’s first brush with a major quake. In April 2016, two massive earthquakes struck the same area within days of each other, killing 275 people and injuring 2,739 more, according to official counts.
Japan as a whole sits on the Pacific “Ring of Fire,” where the Pacific, Philippine Sea, and Eurasian tectonic plates grind against each other. That geology makes Japan responsible for roughly 20% of the world’s earthquakes of magnitude 6 or higher, with a tremor of some size occurring somewhere in the country every few minutes. It’s the same tectonic system that produced a magnitude 7.3 earthquake off Mexico and Guatemala just weeks earlier, on the opposite side of the Pacific.
Why Are Scientists Now Warning of a Future Megaquake in Japan?
Separately from this week’s quake, Japanese scientists have issued a fresh warning that the waters off Hokkaido, in northern Japan, may be building toward a “megaquake” — the term seismologists use for the largest class of earthquakes, capable of magnitudes above 8.8 and devastating tsunamis. The warning, reported by the newspaper Asahi Shimbun, combines new seafloor monitoring data with centuries of historical earthquake records, and a separate warning covers Okinawa in the south.
Japan’s government earthquake research body first flagged the offshore Chishima Trench, stretching from the northeast Pacific to eastern Hokkaido, as facing a “high degree of urgency” for a magnitude 8.8 or larger quake back in 2017. Tsunami deposits show major tsunamis in that area have historically repeated roughly every 340 to 380 years, and it has now been about 400 years since the last one struck, in the 17th century. A study published in February 2026 reinforced the case for continued vigilance in the region, according to Shizuoka University seismologist Kazuyoshi Nanjo.
Nanjo’s team studies the “b-value,” a statistic drawn from patterns of small and medium earthquakes that reflects how much strain is quietly building underground: the lower the b-value, the more energy may be stored up for a future large rupture. Offshore Sanriku showed an unusually low b-value from the mid-2000s until Japan’s magnitude 9 earthquake struck in 2011, killing more than 19,700 people and leaving over 2,500 missing; the b-value spiked right after that quake. Researchers have now found a similarly low b-value area off Hokkaido’s coast, near the town of Nemuro, that has persisted since around 2008 — smaller than the Sanriku anomaly, but sitting in a similar long-quiet “seismic gap.”
A separate team led by Tohoku University seismologist Fumiaki Tomita installed seafloor sensors at three points off Nemuro to track how the tectonic plates there are moving — the first time this kind of data has been gathered so close to a seismic gap. Over roughly five years starting in 2019, the team found the Pacific plate and the continental plate above it moving together at about 8 centimeters a year in the same direction, a sign the two plates are locked rather than sliding smoothly past each other. That locking lets stress accumulate until it is eventually released in a large earthquake. Ahead of the 2011 disaster, plate displacement in the rupture zone is estimated at around 25 meters; off Nemuro, the current displacement is already estimated at 20 to 30 meters, which researchers say may be enough for a similar-scale event.
“We cannot predict exactly when a megaquake will occur or how large it will be,” Nanjo said. “The only thing we can say for certain is that people need to prepare on the assumption it could happen at any time, and disaster prevention should be the highest priority.” Tomita struck a similar note, saying energy is continuing to build and that preparation needs to proceed on the assumption a major earthquake could strike at any time.
Unlike this week’s Kumamoto earthquake, the megaquake warning centers on Hokkaido and Okinawa, not Kyushu, where Monday’s quake struck. But it underscores a point Japanese officials have made repeatedly since Monday: a country that sits on some of the most active fault lines on Earth is unlikely to see a long gap before its next major earthquake.
Why Does This Earthquake Matter Beyond Japan?
Kyushu isn’t just a population center — it’s also a major hub for global semiconductor manufacturing. Sony and TSMC, the world’s largest contract chipmaker and a key supplier to Apple and Nvidia, both operate plants in the region the quake struck. As of the latest reports, there was no immediate clarity on whether either company’s facilities suffered damage.
Given how concentrated global chip production already is in a handful of earthquake-prone locations, any disruption at a Kyushu semiconductor plant, even a temporary one, tends to ripple through electronics supply chains worldwide within days. That’s part of why markets and industry analysts watch Japanese earthquake reports closely, even when the immediate human toll is the more urgent story.
How Is Japan Responding?
Prime Minister Sanae Takaichi set up a government task force within hours to assess damage and coordinate rescue operations. In a social media post, she urged residents in the affected areas to “remain vigilant for the possibility of another earthquake of similar magnitude,” a standard warning given how often major quakes in Japan are followed by dangerous aftershocks.
Japan’s Nuclear Regulation Authority said it found no abnormalities at the three nuclear power plants located near the affected region, easing one of the most serious potential concerns in the immediate aftermath. Local governments in Kumamoto, Nagasaki, Kagoshima, Fukuoka, Saga, Oita, and Miyazaki prefectures all activated emergency response protocols, coordinating everything from shelter logistics to structural inspections of bridges and elevated roadways.
What Happens Next?
Rescue crews remain focused on the Aeon Mall site in Kashima and the Nippon Paper plant in Yatsushiro, where the final number of dead and missing has not yet been fully confirmed. Authorities are also continuing to assess road, bridge, airport, and rail damage across Kyushu before normal transit can fully resume, and are separately weighing the longer-term risk of a future megaquake near Hokkaido and Okinawa.
This is a developing story, and the death toll in particular is likely to keep changing as search-and-rescue operations continue. This article will be updated as Japanese authorities release more information.
Frequently Asked Questions
How strong was the Kumamoto earthquake?
The Japan Meteorological Agency gave it a preliminary magnitude of 7.1, with a shallow depth of about 10 kilometers. It registered shindo 7, the maximum level on Japan’s seismic intensity scale, in the hardest-hit towns.
Was there a tsunami?
A tsunami warning for waves up to 1 meter was issued for the Ariake and Yatsushiro Seas shortly after the quake, but it was lifted by early evening with no reported tsunami damage.
What happened at the Aeon Mall?
An explosion of unconfirmed cause struck the mall in Kashima shortly after the earthquake, partially collapsing its second floor. As of July 30, Kumamoto prefecture has confirmed 5 deaths at the site.
How many people have died?
Japan’s national government said on July 30 that the confirmed death toll had reached 28, according to Kyodo News, while Kumamoto prefecture’s own count stood at 17 confirmed deaths plus 6 more people showing no vital signs. Officials say the two figures differ because they’re compiled from different data sources, and the toll is expected to keep rising.
Was the Aeon Mall the only site where people were trapped?
No. A chimney collapse at the Nippon Paper Industries plant in Yatsushiro has now been linked to 8 confirmed deaths, with one person still missing as of July 30.
Is this related to the 2016 Kumamoto earthquakes?
Not directly, but it struck the same general region. The 2016 Kumamoto earthquakes killed 275 people and remain the deadliest quakes to hit the area in recent history, which is part of why this new quake is drawing comparisons.
Did the earthquake affect semiconductor manufacturing?
Sony and TSMC both operate plants in the affected region, but as of the latest reports, there was no confirmation of damage to either company’s facilities.
How many people were injured or evacuated?
At least 50 people were injured, according to hospital reports. More than 10,000 people remained in evacuation shelters as of the morning of July 30, and roughly 300,000 people were told to move to evacuation centers as a precaution when the quake first struck.
Are scientists warning about a bigger earthquake in Japan?
Yes, though it’s a separate risk from the Kumamoto quake. Japanese seismologists say seafloor monitoring data and historical patterns suggest the waters off Hokkaido, and separately Okinawa, may be approaching a megaquake on the scale of Japan’s 2011 disaster, though they stress they cannot predict exactly when or how large it would be.