Tennessee earthquakes

M3.3 earthquake 8 km ENE of Ooltewah, Tennessee

A magnitude 3.3 earthquake struck 8 km ENE of Ooltewah, Tennessee on Fri, Jul 11, 1986, 10:26 AM EDT (14:26 UTC), 5 km (3 mi) below the surface.

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Map

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

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The earthquake

Magnitude
3.3 (md), minor
Local time
UTC
1986-07-11 14:26:18 UTC
Depth
5.0 km (3.1 mi), shallow
Epicenter
35.110° N, 84.980° W
Region
Tennessee
Strongest shaking
IV, light 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
IV, light shaking
Peak ground acceleration
20.3% of gravity
Peak ground velocity
1.1 cm/s
Map
Automatic
USGS ShakeMap: estimated shaking intensity around the epicenter
Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Depth from
From location

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 2 in the 30 days before it.

After

Before

Earthquakes todayTennessee earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event se602863 (also filed as ushis3959, usp0002vxn). Read Wed, Sep 30, 2026, 12:28 PM UTC.