Utah earthquakes

M2.2 earthquake 7 km NNW of Summit Park, Utah

A magnitude 2.2 earthquake struck 7 km NNW of Summit Park, Utah on Thu, Dec 25, 1986, 3:33 PM MST (22:33 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M2.9 0 km NE of Mount Nebo, Utah. This one was a foreshock.

Summit Park forecastMore in Utah

Map

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

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The earthquake

Magnitude
2.2 (Md, duration), micro
Magnitude from
University of Utah Seismograph Stations
Local time
UTC
1986-12-25 22:33:48 UTC
Depth
10.5 km (6.5 mi), shallow
Epicenter
40.803° N, 111.648° 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 0.4 km horizontally, 1.0 km in depth
Depth from
From location
Station coverage gap
66°
Stations used
22

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 15 in the 60 days after this one and 1 in the 30 days before it.

After

  1. 1.83 km NNW of Rocky Ridge, Utah · 14524 days ago · 0 km deep · 95 km away
  2. 2.46 km NE of Huntsville, Utah · 14515 days ago · 12 km deep · 57 km away
  3. 2.44 km ENE of Eden, Utah · 14513 days ago · 11 km deep · 57 km away
  4. 2.127 km SSE of Independence, Utah · 14509 days ago · 2 km deep · 92 km away
  5. 1.525 km SSW of Evanston, Wyoming · 14500 days ago · 4 km deep · 55 km away
  6. 2.25 km ESE of Heber City, Utah · 14496 days ago · 8 km deep · 43 km away
  7. 2.1Utah · 14490 days ago · 8 km deep · 62 km away
  8. 1.85 km WSW of Vineyard, Utah · 14490 days ago · 2 km deep · 60 km away
  9. 1.711 km SW of Bear River, Wyoming · 14482 days ago · 6 km deep · 71 km away
  10. 2.012 km NE of Springville, Utah · 14480 days ago · -3 km deep · 63 km away
  11. 2.25 km ENE of Daniel, Utah · 14480 days ago · 13 km deep · 43 km away
  12. 2.514 km WSW of Corinne, Utah · 14478 days ago · 19 km deep · 93 km away
  13. 2.315 km WSW of Corinne, Utah · 14478 days ago · 5 km deep · 92 km away
  14. 2.90 km NE of Mount Nebo, Utah · 14476 days ago · 7 km deep · 97 km away
  15. 1.65 km ENE of Daniel, Utah · 14465 days ago · 8 km deep · 44 km away

Before

  1. 2.815 km ENE of Huntsville, Utah · 14548 days ago · 9 km deep · 59 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu50031050. Read Thu, Oct 1, 2026, 7:33 PM UTC.