Oklahoma earthquakes

M4.2 earthquake 9 km NW of Perry, Oklahoma

A magnitude 4.2 earthquake struck 9 km NW of Perry, Oklahoma on Sat, Jun 20, 2020, 10:15 PM CDT (03:15 UTC), 8 km (5 mi) below the surface.

Perry 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
4.2 (mwr), light
Local time
UTC
2020-06-21 03:15:41 UTC
Depth
7.8 km (4.8 mi), shallow
Epicenter
36.359° N, 97.359° W
Region
Oklahoma
Felt reports
1,768
Strongest shaking
VI, strong shaking
Tsunami flag
No
Status
Reviewed by a seismologist

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated
VI, strong shaking
Peak ground acceleration
21.4% of gravity
Peak ground velocity
1.6 cm/s
Map
Automatic
USGS ShakeMap: estimated shaking intensity around the epicenter
Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

1,768 people reported to the USGS what they felt; the strongest reported shaking was VI, strong shaking.

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

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting
Strike-slip
Moment magnitude
4.2 Mwr
Nodal plane 1
Strike 40°, dip 83°, rake -152°
Nodal plane 2
Strike 306°, dip 62°, rake -8°

How well it is located

Reviewed by a seismologist.

Station coverage gap
35°
Stations used
97

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 177 in the 60 days after this one and 100 in the 30 days before it.

After

The first 60 of 177.

Before

Earthquakes todayOklahoma earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ok2020mcmz (also filed as us6000afql). Read Mon, Sep 28, 2026, 7:22 PM UTC.