Idaho earthquakes

M2.1 earthquake 19 km SSE of Grace, Idaho

A magnitude 2.1 earthquake struck 19 km SSE of Grace, Idaho on Fri, Sep 10, 1982, 11:36 PM MDT (05:36 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M3.5 southern Idaho. This one was a foreshock.

Grace forecastMore in Idaho

Map

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

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The earthquake

Magnitude
2.1 (md), micro
Local time
UTC
1982-09-11 05:36:56 UTC
Depth
1.4 km (0.9 mi), shallow
Epicenter
42.426° N, 111.605° W
Region
Idaho
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 0.9 km horizontally, 1.4 km in depth
Depth from
From location
Station coverage gap
157°
Stations used
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 16 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 3.5southern Idaho · 16064 days ago · 5 km deep · 27 km away
  2. 3.52 km NW of Freedom, Idaho · 16057 days ago · 5 km deep · 77 km away
  3. 3.511 km ESE of Soda Springs, Idaho · 16056 days ago · 7 km deep · 24 km away
  4. 3.811 km ESE of Soda Springs, Idaho · 16056 days ago · 7 km deep · 24 km away
  5. 3.210 km ESE of Soda Springs, Idaho · 16055 days ago · 7 km deep · 24 km away
  6. 4.612 km NNW of Georgetown, Idaho · 16050 days ago · 7 km deep · 23 km away
  7. 3.911 km NNW of Georgetown, Idaho · 16050 days ago · 7 km deep · 23 km away
  8. 3.314 km ESE of Soda Springs, Idaho · 16050 days ago · 7 km deep · 25 km away
  9. 3.611 km NNW of Georgetown, Idaho · 16050 days ago · 7 km deep · 24 km away
  10. 3.610 km NNW of Georgetown, Idaho · 16050 days ago · 7 km deep · 22 km away
  11. 3.612 km NNW of Georgetown, Idaho · 16050 days ago · 7 km deep · 23 km away
  12. 4.114 km NNW of Georgetown, Idaho · 16050 days ago · 7 km deep · 24 km away
  13. 3.412 km NNW of Georgetown, Idaho · 16050 days ago · 7 km deep · 23 km away
  14. 3.513 km NNW of Georgetown, Idaho · 16049 days ago · 7 km deep · 24 km away
  15. 1.67 km ESE of Snowville, Utah · 16046 days ago · 13 km deep · 99 km away
  16. 1.59 km SW of Malad City, Idaho · 16044 days ago · 6 km deep · 68 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu50005590. Read Wed, Sep 23, 2026, 3:33 AM UTC.