Minor Earthquake ● Closed

M4.5 Earthquake — Off East Coast Of Honshu, Japan

Event time: Sep 21, 2026 22:29 UTC Last updated: Oct 1, 2026 Japan

Icon = what happened · ring colour = how serious: Extreme Severe Moderate Minor

Loading live data… · Marker positions are approximate; severity is labelled in each popup. Sources: USGS, GDACS, NASA EONET, NOAA/NWS, EMSC.

Magnitude 4.5 earthquake in Off East Coast Of Honshu, Japan, reported by EMSC.

Measurements

Magnitude	M4.5
Depth	32.0 km
Coordinates	37.4601, 142.1207
Region	Off East Coast Of Honshu, Japan

Measured by

Earthquake data courtesy of EMSC

This is a scientific measurement of an event that has already happened. It is not a warning, and it does not tell you what to do.

Not rated by source. European-Mediterranean Seismological Centre does not publish a severity for this; the level shown is our own classification.

View original report

Also reported by: USGS

This event as JSON · API and licence

Source updated 27 days ago (Sep 22, 2026 06:20 UTC) · we last heard from European-Mediterranean Seismological Centre 4 seconds ago

On a slow connection? Low-bandwidth version — no map, no scripts, under 14 KB.

What has changed

Magnitude revised from M4.7 to M4.5 — Sep 22, 03:38 UTC by European-Mediterranean Seismological Centre

Figures published in the first minutes of an event are preliminary. A change here is the agency refining its own estimate, not a correction to this page.

Official authorities in Japan

If you are there, these are the bodies whose instructions apply. This site is not an emergency service and does not issue warnings.

Japan Meteorological Agency

More for Japan →

General safety information

No authority has issued instructions for this event. The guidance below is general background reading, not a response to it.

Drop, Cover, and Hold On — what to do before, during and after an earthquake, plus emergency kit and family plan checklists.

Open Earthquake Safety Guide →

Earlier earthquake events in Japan

Severe and extreme events of the same kind, before this one. Listed for scale, not because they are connected to it.

M7.1 Earthquake — 4 km SE of Uki, Japan Extreme Earthquake Japan closed via USGS Jul 28, 2026 M7.1 Earthquake — 4 km SE of Uki, Japan Extreme Earthquake Japan closed via USGS Jul 28, 2026

Nearby & related events

M4.4 Earthquake — 100 km ESE of Takahagi, Japan Minor Earthquake Japan monitoring via USGS 4 days ago M4.4 Earthquake — Near East Coast Of Honshu, Japan Minor Earthquake Japan monitoring via EMSC 5 days ago M4.4 Earthquake — Near East Coast Of Honshu, Japan Minor Earthquake Japan monitoring via EMSC Oct 12, 2026 M4.7 Earthquake — Near East Coast Of Honshu, Japan Minor Earthquake Japan monitoring via EMSC Oct 11, 2026 Active Fire Zone — 31 satellite detections (24h) Moderate Wildfire Japan closed via FIRMS Oct 9, 2026

Disclaimer: figures are automatic feeds from the named agencies and may be revised. Do not use this page for life-safety decisions — follow official local emergency services.