4.8
Earthquake Details: Hyuganada Sea
Sep 21, 2026, 13:38:00
A magnitude 4.8 earthquake occurred near Hyuganada Sea on Sep 21, 2026 at 13:38:00. The seismic event was recorded at a depth of 300 km. No tsunami warning was issued.
No Tsunami WarningStatus: ReviewedType: Earthquake
Regional Seismicity
Technical Details
Depth300 km
Significance0
Latitude32.6000
Longitude132.1000
Event IDjma:20260921223838
Magnitude4.8
Updated:Sep 21, 2026, 13:42:00 UTC
External Resources
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Time & depth
- Local time
- Sep 21, 2026, 22:38:00 GMT+9
- UTC
- Sep 21, 2026, 13:38:00 UTC
300 km · Intermediate-focus
Between 70 and 300 km deep.
Nearby major cities
Nearby event sequence · 12
M2.7Kumamoto region, KumamotoBeforeM4.657 km ESE of Koseda, JapanBeforeM4.4Amakusanada SeaBeforeM3.3northern OkayamaBeforeM3.5Kumamoto region, KumamotoAfterM3.0Kumamoto region, KumamotoAfterM3.3Kumamoto region, KumamotoAfterM3.0Kumamoto region, KumamotoAfterM2.8Amakusa and Ashikita region, KumamotoAfterM4.5Kumamoto region, KumamotoAfterM2.9Kumamoto region, KumamotoAfterM3.6Kumamoto region, KumamotoAfter
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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 21, 2026, 13:42 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.