Earthquake · Reviewed by USGS

M4.3 earthquake 177 km SE of Hasaki, Japan

A magnitude 4.3 earthquake struck 177 km SE of Hasaki, Japan at Apr 15, 2026, 20:40 UTC, at a depth of 10 km. The epicentre was 177 km (110 mi) ESE of Isumi.

Details

Magnitude	4.3 mb
Time	Apr 15, 2026, 20:40 UTC
Depth	10.0 km
Coordinates	34.572, 142.168
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
4.5	128 km SE of Katsuura, Japan	81 km / 50 mi	depth 10 km	Jul 16, 16:04 UTC
4.3	209 km ESE of Hasaki, Japan	76 km / 48 mi	depth 10 km	Jun 5, 03:49 UTC
4.3	221 km SE of Katsuura, Japan	83 km / 52 mi	depth 10 km	May 23, 03:34 UTC
4.4	203 km SE of Katsuura, Japan	97 km / 60 mi	depth 10 km	May 1, 07:23 UTC
4.2	246 km SE of Shinmachi, Japan	89 km / 55 mi	depth 10 km	Apr 30, 02:18 UTC
4.3	215 km ESE of Shinmachi, Japan	44 km / 27 mi	depth 10 km	Apr 25, 05:19 UTC

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