M3.3 earthquake 7 km WNW of Vonore, Tennessee
A magnitude 3.3 earthquake struck 7 km WNW of Vonore, Tennessee on Tue, Sep 22, 1987, 1:23 PM EDT (17:23 UTC), 19 km (12 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.3 (mb_Lg, Lg-wave body), minor
- Magnitude from
- SE
- Local time
- UTC
- 1987-09-22 17:23:50 UTC
- Depth
- 19.4 km (12.1 mi), shallow
- Epicenter
- 35.623° N, 84.312° W
- Region
- Tennessee
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 3.3 | mb_Lg, Lg-wave body | SE | Preferred · Final |
| 3.3 | mb_Lg, Lg-wave body | USGS National Earthquake Information Center | Reviewed |
What happened
The USGS’s account of the effects of this earthquake.
Felt (V) at Vonore; (IV) at Maryville; (III) at Alcoa, Friendsville, Greenback and Mount Vernon. Also felt at Madisonville and Binfield.
From the USGS event page for se60673. U.S. Geological Survey text and figures are in the public domain.
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
- Station coverage gap
- 38°
- Stations used
- 54
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 2 in the 30 days before it.
After
- 2.117 km E of Tellico Plains, Tennessee · 14241 days ago · 13 km deep · 33 km away
- 2.37 km SE of Kingston, Tennessee · 14226 days ago · 13 km deep · 27 km away
- 1.65 km WSW of Garland, Tennessee · 14224 days ago · 11 km deep · 27 km away
- 1.813 km SW of Epworth, Georgia · 14224 days ago · 7 km deep · 84 km away
- 1.75 km WNW of Graysville, Tennessee · 14206 days ago · 22 km deep · 77 km away
- 1.84 km NNE of Greenback, Tennessee · 14205 days ago · 19 km deep · 17 km away
Before
Earthquakes todayTennessee earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event se60673 (also filed as usp00038mc). Read Fri, Oct 2, 2026, 2:52 AM UTC.