A very shallow magnitude 3.8 earthquake was reported early morning near Ardmore, Carter County, Oklahoma, USA.According to the United States Geological Survey, the quake hit on Sunday, March 1st, 2026, at 2:30 am local time at a very shallow depth of 3.1 miles. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.Our monitoring service identified a second report from the European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 3.8 as well.Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter. Weak shaking might have been felt in Ratliff City (pop. 120) located 4 miles from the epicenter, and Healdton (pop. 2,800) 13 miles away.Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Wilson (pop. 1,700) located 18 miles from the epicenter, Lone Grove (pop. 5,200) 20 miles away, Davis (pop. 2,800) 20 miles away, Ardmore (pop. 25,200) 24 miles away, Pauls Valley (pop. 6,200) 26 miles away, Sulphur (pop. 5,100) 28 miles away, and Duncan (pop. 23,200) 30 miles away.Earthquake data: Date & time: Mar 1, 2026 02:30 am (GMT -6) local time (1 Mar 2026 08:30 GMT)Magnitude: 3.8Depth: 5.00 kmEpicenter latitude / longitude: 34.42°N / 97.45°W (Carter County, Oklahoma, United States)Primary data source: USGS