Earthquake · Reviewed by USGS

M4.3 earthquake 43 km WSW of Grindavík, Iceland

A magnitude 4.3 earthquake struck 43 km WSW of Grindavík, Iceland at Sep 12, 2025, 20:04 UTC, at a depth of 10 km. The epicentre was 49 km (30 mi) SW of Reykjanesbaer.

Details

Magnitude	4.3 mb
Time	Sep 12, 2025, 20:04 UTC
Depth	10.0 km
Coordinates	63.675, -23.238
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
4.2	33 km SW of Sandgerði, Iceland	19 km / 12 mi	depth 10 km	Aug 25, 05:46 UTC
4.4	45 km SW of Sandgerði, Iceland	12 km / 7 mi	depth 10 km	Aug 25, 03:38 UTC
4.1	18 km W of Grindavík, Iceland	30 km / 19 mi	depth 10 km	Mar 23, 18:45 UTC
4.2	35 km WSW of Grindavík, Iceland	8 km / 5 mi	depth 10 km	Mar 23, 17:25 UTC
4.4	45 km WSW of Grindavík, Iceland	4 km / 2 mi	depth 10 km	Mar 23, 16:30 UTC
4.1	85 km WSW of Grindavík, Iceland	42 km / 26 mi	depth 10 km	Jan 11, 06:23 UTC

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