M2.3 earthquake 2 km NNW of Summit, Utah
A magnitude 2.3 earthquake struck 2 km NNW of Summit, Utah on Sat, Oct 31, 1981, 11:15 AM MST (18:15 UTC), -1 km (-1 mi) below the surface.
A larger quake followed: M2.5 3 km NNE of Saint George, Utah. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.3 (md), micro
- Local time
- UTC
- 1981-10-31 18:15:32 UTC
- Depth
- -0.9 km (-0.5 mi), shallow
- Epicenter
- 37.825° N, 112.951° W
- Region
- Utah
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 1.0 km horizontally, 1.9 km in depth
- Depth from
- From location
- Station coverage gap
- 139°
- Stations used
- 8
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 6 in the 30 days before it.
After
- 1.613 km WNW of Beryl Junction, Utah · 16397 days ago · 6 km deep · 75 km away
- 1.53 km NE of Marysvale, Utah · 16389 days ago · -2 km deep · 97 km away
- 1.7Utah · 16385 days ago · 2 km deep · 95 km away
- 2.13 km SSE of Saint George, Utah · 16383 days ago · -1 km deep · 100 km away
- 1.84 km SW of Kingston, Utah · 16382 days ago · 6 km deep · 75 km away
- 1.62 km SW of Circleville, Utah · 16382 days ago · 6 km deep · 69 km away
- 1.738 km NNE of Beryl Junction, Utah · 16375 days ago · 12 km deep · 55 km away
- 1.85 km N of Toquerville, Utah · 16367 days ago · -1 km deep · 66 km away
- 2.53 km NNE of Saint George, Utah · 16365 days ago · 0 km deep · 94 km away
- 2.011 km E of Beaver, Utah · 16338 days ago · 15 km deep · 63 km away
Before
- 1.98 km NNW of Junction, Utah · 16402 days ago · 6 km deep · 80 km away
- 1.68 km NW of Circleville, Utah · 16409 days ago · 6 km deep · 68 km away
- 2.514 km WSW of Enterprise, Utah · 16412 days ago · 6 km deep · 87 km away
- 1.711 km ENE of Beaver, Utah · 16414 days ago · 6 km deep · 67 km away
- 2.05 km W of Enoch, Utah · 16424 days ago · 3 km deep · 13 km away
- 1.7Utah · 16426 days ago · 3 km deep · 12 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uu50002905. Read Wed, Sep 23, 2026, 6:06 AM UTC.