Live intelligence tracking 2 recent earthquakes across Japan, with active monitoring of Hokkaido, Chubu, and other seismic zones along the Pacific Ring of Fire.
Live surface
Follow fresh quake markers in Japan as they appear and use the sidebar to jump into the most relevant seismic updates.
Seismic events sorted by the latest updates — click any row for detail, magnitude, depth, and related coverage.
| Event | Severity |
|---|---|
🌍 6.1-Magnitude Quake in Hokkaido A 6.1-magnitude earthquake struck Hokkaido, Japan, with no tsunami warning issued. | MEDIUM |
🌍 M6.1 Earthquake - 18 km W of Sarabetsu, Japan Magnitude 6.1 earthquake at depth of 81.0km. 18 km W of Sarabetsu, Japan | HIGH |
Seismic hotspots
Historic earthquakes
Tokyo earthquake history · Fukushima aftershock zone · Japan tsunami warnings & Nankai Trough risk. These events shaped modern earthquake preparedness — from building codes and early warning systems to tsunami evacuation routes — across the region.
Fault systems
Where the Pacific Plate subducts beneath the Okhotsk microplate off the Tōhoku coast. Source of the 2011 Mw 9.1 Tōhoku earthquake. Slips at ~8 cm/year.
Learn moreConvergent boundary where the Philippine Sea Plate subducts beneath southwestern Japan. Japan's Central Disaster Management Council considers a M9 Nankai Trough earthquake the country's single largest seismic threat — projected 320,000 fatalities in worst case.
Learn moreThe Philippine Sea plate boundary directly beneath Tokyo Bay. Source of the 1923 Great Kantō earthquake. JMA's top-priority for ongoing seismic hazard revision — a Tokyo-direct M7 earthquake is assigned a 70% probability in the next 30 years.
Learn moreJapan's longest onshore active fault, running across Shikoku and into the Kii Peninsula. Right-lateral strike-slip motion. Slips at 5–10 mm/year but hasn't ruptured historically — considered a significant latent hazard for Shikoku.
Learn moreRight-lateral strike-slip fault system in Kyushu. Source of the 2016 Kumamoto earthquake sequence. Demonstrated that adjacent segments can rupture in foreshock-mainshock pairs.
Learn moreJapan Trench subduction zone · Nankai Trough megaquake forecast · Sagami Trough beneath Tokyo Bay. Understanding the dominant fault systems in the region is the foundation of earthquake preparedness — every safety protocol, building code, and early warning system is calibrated against these geologies.
Monitoring authorities
National (Japan)
Issues Earthquake Early Warnings (~5–10 sec before S-wave), Shindo intensity reports within 90 seconds, and tsunami bulletins within 3 minutes.
Live bulletinNational (Japan)
Operates Hi-net and K-NET seismic networks providing the dense sensor data that feeds JMA alerts. Publishes real-time waveforms and research data.
Live bulletinNational (Japan) — research
Academic seismology research institute studying the Nankai Trough megaquake cycle and volcanic earthquakes. Publishes long-term seismic hazard assessments.
Live bulletinInternational cross-reference
Cross-references Japanese quakes in the global ANSS catalog. Provides ShakeMap and Did You Feel It reports for international audiences.
Live bulletinJMA Earthquake Early Warning · Shindo intensity reports · NIED Hi-net seismic network. Bookmark these official feeds for real-time earthquake alerts, felt reports, and post-event damage assessments. The World Now cross-references their data for the live tracker above.
About this tracker
Japan sits at the junction of four tectonic plates — the Pacific, Philippine Sea, Eurasian, and North American plates — making it one of the most earthquake-prone countries on Earth. Roughly 20% of the world's magnitude 6+ earthquakes occur in or near Japan, and the country records over 1,500 noticeable earthquakes per year.
The global earthquake tracker frequently shows clusters of activity around Japan's major subduction zones: the Japan Trench off the Pacific coast, the Nankai Trough in the southwest, and the Sagami Trough near Tokyo. These subduction zones are where the Pacific and Philippine plates dive beneath the continental plates, building enormous stress that releases in devastating megathrust earthquakes.
Japan's seismic history includes some of the most catastrophic earthquakes ever recorded. The 2011 Tohoku earthquake (M9.1) generated a massive tsunami that killed over 18,000 people and triggered the Fukushima nuclear disaster. The 1995 Kobe earthquake (M6.9) destroyed much of the city and killed 6,434 people. The 1923 Great Kanto earthquake (M7.9) devastated Tokyo and Yokohama, killing over 100,000.
More recently, the 2024 Noto Peninsula earthquake (M7.6) caused significant damage in Ishikawa Prefecture and triggered tsunami warnings across the Sea of Japan coast. These events remind the world that Japan's seismic hazard is a constant reality.
Track how Japanese seismic activity affects global markets on our Catalyst market intelligence platform — major earthquakes in Japan historically impact semiconductor supply chains, insurance markets, and the yen.
Japan operates the world's most advanced earthquake early warning system. The Japan Meteorological Agency (JMA) can detect P-waves (the faster but less destructive primary waves) and broadcast alerts seconds to tens of seconds before the stronger S-waves arrive. This system automatically triggers train brakes on the Shinkansen network, opens fire station doors, and sends alerts to every mobile phone in affected areas.
Japan's building codes are among the strictest in the world for seismic resilience. Modern buildings in Tokyo use base isolation, seismic dampers, and flexible steel frames designed to sway without collapsing during even the most powerful earthquakes. This engineering is why magnitude 7+ earthquakes in Japan often cause far fewer casualties than similar events in less-prepared countries.
Frequently Asked Questions
Japan experiences an average of 4-5 noticeable earthquakes per day and hundreds of micro-earthquakes detected by instruments. The JMA records over 1,500 earthquakes that are felt by people each year, with many more detected only by seismometers.
The Nankai Trough megathrust earthquake is considered overdue based on historical recurrence intervals. Japanese government estimates put the probability of a M8-9 earthquake along this zone at 70-80% within the next 30 years. When it occurs, it could generate a tsunami affecting the entire Pacific coast of southern Japan.
Japan's building codes, updated after each major disaster, are among the world's most stringent. Modern construction uses base isolation (buildings sit on rubber bearings), active mass dampers, and flexible steel frames. Older buildings are being retrofitted under government programs, though millions of pre-1981 buildings remain more vulnerable.
We ingest data from USGS, JMA, and other global seismological agencies in near real-time. Japanese earthquakes appear on our interactive globe, event table, and seismic hotspot analysis within minutes of detection.
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Last updated 4/27/2026, 4:29:10 AM