3.3
Earthquake Details: northern Okayama
Sep 20, 2026, 23:49:00
A magnitude 3.3 earthquake occurred near northern Okayama on Sep 20, 2026 at 23:49:00. The seismic event was recorded at a depth of 100 km. No tsunami warning was issued.
No Tsunami WarningStatus: ReviewedType: Earthquake
Regional Seismicity
Technical Details
Depth100 km
Significance0
Latitude35.3000
Longitude133.7000
Event IDjma:20260921084946
Magnitude3.3
Updated:Sep 20, 2026, 23:52:00 UTC
External Resources
View on JMA Official SiteLoading map...
Time & depth
- Local time
- Sep 21, 2026, 08:49:00 GMT+9
- UTC
- Sep 20, 2026, 23:49:00 UTC
100 km · Intermediate-focus
Between 70 and 300 km deep.
Nearby major cities
Nearby event sequence · 12
M4.4Amakusanada SeaBeforeM4.758 km SE of Shima, JapanBeforeM4.8Hyuganada SeaAfterM3.5Kumamoto region, KumamotoAfterM3.0Kumamoto region, KumamotoAfterM3.3Kumamoto region, KumamotoAfterM3.0eastern Mino, GifuAfterM3.0Kumamoto region, KumamotoAfterM2.8Amakusa and Ashikita region, KumamotoAfterM4.5Kumamoto region, KumamotoAfterM2.9Kumamoto region, KumamotoAfterM3.6Kumamoto region, KumamotoAfter
You may also find these tools useful
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 20, 2026, 23:52 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.