Idaho earthquakes

M1.7 earthquake 22 km NE of Lima, Montana

A magnitude 1.7 earthquake struck 22 km NE of Lima, Montana on Wed, Mar 21, 2018, 4:34 PM MDT (22:34 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M3.5 27 km NE of Lima, Montana. This one was a foreshock.

Dillon forecastMore in Idaho

Map

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

Open the live map with earthquakes

The earthquake

Magnitude
1.7 (ML, local (Richter)), micro
Magnitude from
Montana Bureau of Mines and Geology
Local time
UTC
2018-03-21 22:34:22 UTC
Depth
8.9 km (5.5 mi), shallow
Epicenter
44.748° N, 112.362° 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 0.3 km horizontally, 0.9 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
95°
Stations used
17

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 22 in the 60 days after this one and 1 in the 30 days before it.

After

  1. 1.534 km SSE of Virginia City, Montana · 3112 days ago · 3 km deep · 60 km away
  2. 1.85 km E of Hebgen Lake Estates, Montana · 3102 days ago · 10 km deep · 98 km away
  3. 2.55 km ESE of Hebgen Lake Estates, Montana · 3102 days ago · 11 km deep · 98 km away
  4. 1.95 km E of Hebgen Lake Estates, Montana · 3102 days ago · 10 km deep · 98 km away
  5. 1.917 km WNW of Hebgen Lake Estates, Montana · 3101 days ago · 12 km deep · 76 km away
  6. 2.75 km ESE of Hebgen Lake Estates, Montana · 3100 days ago · 10 km deep · 98 km away
  7. 2.05 km E of Hebgen Lake Estates, Montana · 3100 days ago · 10 km deep · 98 km away
  8. 1.85 km E of Hebgen Lake Estates, Montana · 3100 days ago · 10 km deep · 98 km away
  9. 1.85 km E of Hebgen Lake Estates, Montana · 3100 days ago · 11 km deep · 98 km away
  10. 1.819 km W of Lima, Montana · 3097 days ago · 13 km deep · 40 km away
  11. 1.8Idaho-Montana border region · 3097 days ago · 0 km deep · 51 km away
  12. 1.65 km E of Hebgen Lake Estates, Montana · 3096 days ago · 10 km deep · 97 km away
  13. 1.75 km ESE of Hebgen Lake Estates, Montana · 3095 days ago · 10 km deep · 98 km away
  14. 1.85 km ESE of Hebgen Lake Estates, Montana · 3095 days ago · 10 km deep · 98 km away
  15. 3.527 km NE of Lima, Montana · 3095 days ago · 10 km deep · 7 km away
  16. 1.530 km NE of Lima, Montana · 3094 days ago · 10 km deep · 10 km away
  17. 1.630 km NE of Lima, Montana · 3093 days ago · 12 km deep · 10 km away
  18. 1.77 km SSE of Spencer, Idaho · 3090 days ago · 0 km deep · 53 km away
  19. 1.923 km NNW of Dillon, Montana · 3080 days ago · 6 km deep · 80 km away
  20. 1.75 km ESE of Hebgen Lake Estates, Montana · 3080 days ago · 10 km deep · 98 km away
  21. 1.7Idaho-Montana border region · 3068 days ago · 5 km deep · 75 km away
  22. 2.422 km NE of Lima, Montana · 3068 days ago · 1 km deep · 5 km away

Before

  1. 1.534 km S of Virginia City, Montana · 3130 days ago · 4 km deep · 43 km away

Earthquakes todayIdaho earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event mb80286714. Read Fri, Oct 2, 2026, 5:21 PM UTC.