According to JMA, a magnitude 4.8 earthquake struck near Northeastern Chiba Prefecture on October 8, 2026. It was recorded at 04:13 AM GMT+9 at a depth of 50 km.
Magnitude and location may later be revised by JMA.
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Magnitude
M4.8
Mj · Light
Depth
50 km
Shallow
Time (UTC)
07:13:00 PM
October 7, 2026
Local time
04:13 AM
October 8, 2026 · GMT+9
The epicenter was about 77 km from Mito.
Since this earthquake, 2 earthquakes have been recorded within 50 km of the epicenter; the largest was M4.3.
From 1990 until this earthquake, 1,372 earthquakes of magnitude 4.5 or greater were recorded within 100 km of the epicenter. The largest was an M7.9 earthquake on March 11, 2011.
Source: USGS earthquake catalogue (ComCat).
The earthquake occurred near Northeastern Chiba Prefecture at 35.700° N, 140.700° E, at a depth of 50 km. The nearest town was Mito, about 77 km away.
JMA reported a magnitude of Mj 4.8 (light). How strongly it was felt, and any damage, also depend on depth, distance from the epicenter and local ground conditions.
Since this earthquake, 2 earthquakes have been recorded within 50 km of the epicenter; the largest was M4.3.
Earthquake data: USGS (public domain); Turkey: AFAD; Europe: EMSC-CSEM SeismicPortal (CC BY 4.0); Japan: JMA; New Zealand: GeoNet (CC BY 3.0 NZ); Australia: Geoscience Australia (CC BY 4.0); Canada: NRCan (OGL-Canada); USGS backup: GFZ GEOFON (CC BY 4.0). Map: © OpenMapTiles © OpenStreetMap contributors. Borders: Natural Earth.