4 Apr 2026, 16:14 UTC · Apr 4, 12:14 PM ET

M4.6 earthquake 52 km SE of Koseda, Japan

A magnitude 4.6 earthquake struck 52 km SE of Koseda, Japan at Apr 4, 12:14 PM ET, 42 km deep, light – felt by most people nearby, rattling windows, rarely damage.

under 33–44–55–66+

Magnitude	4.6 mb
Time	4 Apr 2026, 16:14 UTC
Location	30.087°, 131.065° – 52 km SE of Koseda, Japan
Depth	41.9 km
Felt reports	0
USGS event	us6000smli

Within 100 km

Other earthquakes nearby this year

Mag.	Where	When (ET)	Depth	Felt
5.4	84 km S of Koshima, Japan · PAGER green	Mar 21, 7:12 AM 209 d ago	22 km	1 report
5.3	43 km E of Nishinoomote, Japan	Jul 16, 5:49 PM 92 d ago	35 km	2 reports
4.9	97 km SE of Koshima, Japan	Aug 22, 10:56 AM 55 d ago	10 km	–
4.8	55 km ESE of Koshima, Japan	Aug 29, 5:00 PM 48 d ago	35 km	–
4.8	62 km ESE of Koseda, Japan	Aug 4, 3:56 PM 73 d ago	28 km	1 report
4.6	118 km ESE of Koshima, Japan	Apr 6, 9:14 AM 193 d ago	10 km	–
4.6	93 km S of Koshima, Japan	Mar 23, 8:39 AM 207 d ago	38 km	–
4.6	92 km S of Koshima, Japan	Mar 21, 7:53 AM 209 d ago	40 km	–
4.5	55 km SE of Koseda, Japan	Sep 19, 3:08 AM 28 d ago	38 km	–
4.5	59 km SE of Koseda, Japan	Aug 4, 4:01 PM 73 d ago	10 km	–
4.5	103 km S of Koshima, Japan	Aug 4, 5:29 AM 73 d ago	35 km	–
4.5	59 km S of Koshima, Japan	Jul 18, 11:51 AM 90 d ago	46 km	–

FAQ

About this earthquake

How strong was the 52 km SE of Koseda, Japan earthquake?

Magnitude 4.6 (mb), light – felt by most people nearby, rattling windows, rarely damage. Depth 42 km.

Was it felt?

No felt reports have been submitted to the USGS so far.

Were there aftershocks?

1 earthquakes within 100 km in the following two weeks are in our records, the strongest M4.6.

Earthquakes

Source: U.S. Geological Survey (USGS) earthquake catalog, real-time feeds and FDSN event service; magnitudes and locations are revised by seismologists for hours after an event. Times are Eastern (ET) unless marked UTC. Not an alert service: for warnings follow local authorities and tsunami centers.