Earthquake · Reviewed by USGS

M4.5 earthquake 271 km SE of Katsuura, Japan

A magnitude 4.5 earthquake struck 271 km SE of Katsuura, Japan at Oct 1, 2025, 19:26 UTC, at a depth of 10 km. The epicentre was 271 km (169 mi) SE of Katsuura.

Details

Magnitude	4.5 mb
Time	Oct 1, 2025, 19:26 UTC
Depth	10.0 km
Coordinates	33.403, 142.380
Felt reports	0
Tsunami flag	None
Source	USGS event page

Fig. 1The epicentre and other earthquakes within 100 km, since the day before

01 — Nearby

Nearest cities

02 — Around it

Other earthquakes within 100 km

Other earthquakes within 100 km since the day before this event
Magnitude	Location	Distance	Depth	Time
4.7	202 km SSE of Katsuura, Japan	90 km / 56 mi	depth 41 km	Aug 14, 09:58 UTC
4.3	Izu Islands, Japan region	58 km / 36 mi	depth 10 km	Jun 1, 02:51 UTC
4.4	off the east coast of Honshu, Japan	42 km / 26 mi	depth 10 km	Jun 1, 02:28 UTC
4.5	off the east coast of Honshu, Japan	45 km / 28 mi	depth 10 km	May 29, 10:15 UTC
4.3	221 km SE of Katsuura, Japan	53 km / 33 mi	depth 10 km	May 23, 03:34 UTC
4.4	203 km SE of Katsuura, Japan	69 km / 43 mi	depth 10 km	May 1, 07:23 UTC
4.2	246 km SE of Shinmachi, Japan	47 km / 29 mi	depth 10 km	Apr 30, 02:18 UTC
4.3	215 km ESE of Shinmachi, Japan	92 km / 57 mi	depth 10 km	Apr 25, 05:19 UTC
5.0	278 km SE of Katsuura, Japan	7 km / 5 mi	depth 10 km	Apr 16, 14:43 UTC
4.6	210 km SSE of Katsuura, Japan	84 km / 52 mi	depth 10 km	Feb 12, 19:51 UTC

USGS can revise magnitude and location after the first report. See magnitude vs intensity and aftershocks.