4.0
Earthquake Details: Hyuganada Sea
Sep 1, 2026, 23:24:00
A magnitude 4.0 earthquake occurred near Hyuganada Sea on Sep 1, 2026 at 23:24:00. The seismic event was recorded at a depth of 400 km. No tsunami warning was issued.
No Tsunami WarningStatus: ReviewedType: Earthquake
Regional Seismicity
Technical Details
Depth400 km
Significance0
Latitude31.9000
Longitude131.7000
Event IDjma:20260902082446
Magnitude4.0
Updated:Sep 1, 2026, 23:27:00 UTC
External Resources
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Time & depth
- Local time
- Sep 2, 2026, 08:24:00 GMT+9
- UTC
- Sep 1, 2026, 23:24:00 UTC
400 km · Deep-focus
More than 300 km deep. Deep earthquakes can be felt across a wide area.
Nearby major cities
Nearby event sequence · 12
M3.7near the south coast of western HonshuBeforeM2.6Amakusa and Ashikita region, Kumamoto PrefectureBeforeM3.1Amakusa and Ashikita region, Kumamoto PrefectureBeforeM2.7Kumamoto region, Kumamoto PrefectureBeforeM3.2Amakusa and Ashikita region, Kumamoto PrefectureBeforeM2.7Amakusa and Ashikita region, Kumamoto PrefectureBeforeM2.7Kumamoto region, Kumamoto PrefectureBeforeM2.9Central Kochi PrefectureBeforeM2.8Amakusa and Ashikita region, Kumamoto PrefectureAfterM3.2Iyonada SeaAfterM3.3near the south coast of western HonshuAfterM3.2Amakusa and Ashikita region, Kumamoto PrefectureAfter
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Earthquake information is automatically aggregated from the official seismic agencies listed below. Preliminary measurements can change as agencies review an event; use local emergency authorities for safety decisions. Latest successful data update: Sep 1, 2026, 23:27 UTC.
Data sources:
- USGS — Credit: U.S. Geological Survey.
- EMSC — Credit: EMSC/CSEM. Event catalogue data are provided under CC BY 4.0. CC BY 4.0
- JMA — Source: Japan Meteorological Agency (JMA).
- Geoscience Australia — Based on Australian Earthquakes data by Geoscience Australia. © Commonwealth of Australia. Licensed under CC BY 4.0; the section 5 disclaimer applies. CC BY 4.0
- GeoNet — We acknowledge the New Zealand GeoNet programme and its sponsors NHC, Earth Sciences NZ, LINZ, NEMA and MBIE for providing earthquake data.