20 Apr 2026, 01:21 UTC · Apr 19, 9:21 PM ET · PAGER green

M5.4 earthquake western Indian-Antarctic Ridge

A magnitude 5.4 earthquake struck western Indian-Antarctic Ridge at Apr 19, 9:21 PM ET, 10 km deep, moderate – felt widely, some damage to weak buildings.

under 33–44–55–66+

Magnitude	5.4 mww
Time	20 Apr 2026, 01:21 UTC
Location	-49.691°, 117.406° – western Indian-Antarctic Ridge
Depth	10.0 km
Felt reports	0
Max. estimated intensity (MMI)	0.0
PAGER alert	green
USGS event	us6000srgj

Within 100 km

Other earthquakes nearby this year

Mag.	Where	When (ET)	Depth	Felt
4.5	western Indian-Antarctic Ridge	Apr 19, 9:10 PM 180 d ago	10 km	–

FAQ

About this earthquake

How strong was the western Indian-Antarctic Ridge earthquake?

Magnitude 5.4 (mww), moderate – felt widely, some damage to weak buildings. Depth 10 km.

Was it felt?

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

Were there aftershocks?

No earthquakes within 100 km have followed so far in our records.

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.