M3.5 earthquake 10 km NE of Soma, Turkey

A magnitude 3.5 earthquake struck 10 km NE of Soma, Turkey on Sat, Oct 23, 1999, 5:00 AM GMT+3 (02:00 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.6 16 km ENE of Sava?tepe, Turkey. This one was a foreshock.

Map

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

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 1.5 and up: 6 in the 60 days after this one and 6 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event usp0009gf1. Read Sat, Oct 3, 2026, 12:44 PM UTC.