Earthquake · Reviewed by USGS

M4.2 earthquake 87 km WNW of Amagi, Japan

A magnitude 4.2 earthquake struck 87 km WNW of Amagi, Japan at Mar 28, 2026, 16:39 UTC, at a depth of 9 km. The epicentre was 145 km (90 mi) WSW of Naze.

Details

Magnitude	4.2 mb
Time	Mar 28, 2026, 16:39 UTC
Depth	9.2 km
Coordinates	28.052, 128.051
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
4.4	72 km NW of Iheya, Japan	74 km / 46 mi	depth 126 km	Sep 25, 12:21 UTC
4.4	52 km NW of Amagi, Japan	51 km / 31 mi	depth 84 km	Aug 22, 18:44 UTC
4.6	87 km NW of Amagi, Japan	26 km / 16 mi	depth 10 km	Jul 31, 12:58 UTC
4.4	17 km NNW of China, Japan	77 km / 48 mi	depth 35 km	May 31, 01:58 UTC
5.9	11 km NNE of Wadomari, Japan	91 km / 57 mi	depth 42 km	May 20, 02:46 UTC
4.2	100 km NW of China, Japan	29 km / 18 mi	depth 10 km	Mar 30, 02:22 UTC
4.3	73 km WNW of Amagi, Japan	17 km / 11 mi	depth 10 km	Mar 30, 01:44 UTC
5.1	77 km WNW of Amagi, Japan	10 km / 6 mi	depth 10 km	Mar 29, 07:07 UTC
4.2	81 km WNW of Amagi, Japan	8 km / 5 mi	depth 10 km	Mar 28, 17:50 UTC

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