4.0
Earthquake Details: 9 km from Honmachi, Kumamoto, Japan
8/18/2026, 6:05:00 AM
A magnitude 4.0 earthquake occurred near 9 km from Honmachi, Kumamoto, Japan on 8/18/2026 at 6:05:00 AM. 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
Latitude32.5000
Longitude130.5000
Event IDjma:20260818150559
Magnitude4.0
Updated:8/18/2026, 6:09:00 AM
External Resources
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Time & depth
- Local time
- 8/18/2026, 3:05:00 PM GMT+9
- UTC
- 8/18/2026, 6:05:00 AM UTC
100 km · Intermediate-focus
Between 70 and 300 km deep.
Nearby major cities
Nearby event sequence · 12
M3.4Kumamoto region, KumamotoBeforeM3.6Kumamoto region, KumamotoBeforeM4.1Hyuganada SeaBeforeM3.3Amakusanada SeaBeforeM4.4Fukuoka region, FukuokaBeforeM4.1Hyuganada SeaBeforeM3.5Kumamoto region, KumamotoBeforeM3.2Kyushu, JapanBeforeM3.7Kyushu, JapanBeforeM3.2Kumamoto region, KumamotoBeforeM3.1Fukuoka region, FukuokaBeforeM3.7Amakusa and Ashikita region, KumamotoBefore
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: Aug 18, 2026, 06:09 AM 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.