M3.5 earthquake 26 km NNE of Tabiona, Utah
A magnitude 3.5 earthquake struck 26 km NNE of Tabiona, Utah on Fri, Sep 30, 1977, 6:56 AM MDT (12:56 UTC), 5 km (3 mi) below the surface.
A larger quake followed: M4.8 22 km NW of Altamont, Utah. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.5 (ml), minor
- Local time
- UTC
- 1977-09-30 12:56:02 UTC
- Depth
- 5.0 km (3.1 mi), shallow
- Epicenter
- 40.576° N, 110.603° 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.
- Depth from
- OPERATOR_ASSIGNED
- Stations used
- 7
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 1 in the 30 days before it.
After
- 2.822 km NW of Altamont, Utah · 17887 days ago · 5 km deep · 14 km away
- 3.122 km NW of Altamont, UT · 17887 days ago · 3 km deep · 14 km away
- 2.821 km NW of Altamont, Utah · 17883 days ago · 6 km deep · 15 km away
- 4.822 km NW of Altamont, Utah · 17878 days ago · 6 km deep · 14 km away
- 3.426 km NW of Altamont, Utah · 17878 days ago · 5 km deep · 10 km away
Before
Earthquakes todayUtah earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000qux. Read Tue, Sep 22, 2026, 8:42 AM UTC.