Earthquake · Reviewed by USGS

M4.0 earthquake 297 km SSE of Port Blair, India

A magnitude 4.0 earthquake struck 297 km SSE of Port Blair, India at Jul 29, 2025, 16:23 UTC, at a depth of 10 km. The epicentre was 299 km (186 mi) SSE of Port Blair.

Details

Magnitude	4.0 mb
Time	Jul 29, 2025, 16:23 UTC
Depth	10.0 km
Coordinates	9.252, 93.945
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

Port Blair299 km (186 mi)

02 — Around it

Other earthquakes within 100 km

Other earthquakes within 100 km since the day before this event
Magnitude	Location	Distance	Depth	Time
4.3	Nicobar Islands, India region	24 km / 15 mi	depth 10 km	Apr 10, 03:36 UTC
4.4	237 km SSE of Port Blair, India	60 km / 37 mi	depth 10 km	Sep 3, 13:52 UTC
4.4	Nicobar Islands, India region	26 km / 16 mi	depth 10 km	Aug 10, 18:44 UTC
4.4	289 km SSE of Port Blair, India	11 km / 7 mi	depth 10 km	Aug 10, 06:18 UTC
5.0	287 km SSE of Port Blair, India	13 km / 8 mi	depth 40 km	Jul 30, 17:21 UTC
4.3	Nicobar Islands, India region	18 km / 11 mi	depth 10 km	Jul 29, 19:20 UTC
4.5	286 km SSE of Port Blair, India	17 km / 11 mi	depth 10 km	Jul 29, 17:14 UTC
4.9	285 km SSE of Port Blair, India	12 km / 8 mi	depth 10 km	Jul 29, 16:24 UTC
5.0	288 km SSE of Port Blair, India	12 km / 7 mi	depth 10 km	Jul 29, 16:11 UTC
4.8	276 km SSE of Port Blair, India	25 km / 16 mi	depth 10 km	Jul 29, 15:47 UTC

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