Earthquake Details: Hyuganada Sea

8/17/2026, 3:06:00 AM

A magnitude 4.1 earthquake occurred near Hyuganada Sea on 8/17/2026 at 3:06:00 AM. The seismic event was recorded at a depth of 100 km. No tsunami warning was issued.

No Tsunami WarningStatus: reviewedType: earthquake

Regional Seismicity

View recent seismic activity near this event:

Japan Miyazaki Miyazaki (Nearest City)

Technical Details

Depth100 km

Significance0

Latitude31.7000

Longitude132.0000

Event IDjma:20260817120659

Magnitude4.1

Updated:8/17/2026, 3:11:00 AM

External Resources

View on JMA Official Site

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Time & depth

Local time: 8/17/2026, 12:06:00 PM GMT+9
UTC: 8/17/2026, 3:06:00 AM UTC

100 km · Intermediate-focus

Between 70 and 300 km deep.

Nearby major cities

Nearby event sequence · 12

M3.2Bungo ChannelBefore8/14/2026, 3:42:00 AM M3.0Kumamoto region, KumamotoBefore8/14/2026, 7:05:00 AM M3.3Kumamoto region, KumamotoBefore8/14/2026, 10:08:00 AM M3.0Amakusa and Ashikita region, KumamotoBefore8/14/2026, 10:12:00 PM M3.0Osaka BayBefore8/15/2026, 12:03:00 PM M3.4Kumamoto region, KumamotoBefore8/15/2026, 7:25:00 PM M3.6Kumamoto region, KumamotoBefore8/16/2026, 3:04:00 AM M4.1Hyuganada SeaBefore8/16/2026, 4:37:00 AM M3.3Amakusanada SeaBefore8/16/2026, 12:25:00 PM M3.0Amakusanada SeaBefore8/16/2026, 12:42:00 PM M3.0Amakusanada SeaBefore8/16/2026, 3:22:00 PM M4.4Fukuoka region, FukuokaBefore8/16/2026, 9:37:00 PM

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 17, 2026, 03:11 AM UTC. Data sources: USGS / EMSC / JMA / Geoscience Australia / GeoNet.