Oklahoma earthquakes

M3.2 earthquake 3 km SSW of Alva, Oklahoma

A magnitude 3.2 earthquake struck 3 km SSW of Alva, Oklahoma on Tue, Jul 31, 2018, 12:12 AM CDT (05:12 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M3.4 5 km NE of Medford, Oklahoma. This one was a foreshock.

Alva forecastMore in Oklahoma

Map

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

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The earthquake

Magnitude
3.2 (ml), minor
Local time
UTC
2018-07-31 05:12:54 UTC
Depth
11.2 km (7.0 mi), shallow
Epicenter
36.777° N, 98.682° W
Region
Oklahoma
Felt reports
5
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

5 people reported to the USGS what they felt; the strongest reported shaking was II, weak shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 1.3 km horizontally, 8.0 km in depth
Station coverage gap
103°
Stations used
0

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 117 in the 60 days after this one and 36 in the 30 days before it.

After

The first 60 of 117.

Before

Earthquakes todayOklahoma earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000ghwx. Read Mon, Sep 21, 2026, 7:56 PM UTC.