M4.8 earthquake 4 km ENE of Oni, Georgia

A magnitude 4.8 earthquake struck 4 km ENE of Oni, Georgia on Tue, Apr 30, 1991, 3:15 PM GMT+4 (11:15 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M6.3 9 km NE of Java, Georgia. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
4.8	mb, body-wave	USGS National Earthquake Information Center	Preferred · Reviewed · 34 stations
5.21	Mw, moment	ISC-GEM global catalog	Final · ±0.23

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

Distance and direction from each place to the epicenter, with its forecast.

Within 100 km, magnitude 1.8 and up: 32 in the 60 days after this one and 37 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event usp0004r1t (also filed as iscgem337078). Read Sun, Oct 4, 2026, 5:17 PM UTC.