Montana earthquakes

M2.9 earthquake 15 km S of Whitehall, Montana

A magnitude 2.9 earthquake struck 15 km S of Whitehall, Montana on Tue, Jul 24, 2018, 12:18 AM MDT (06:18 UTC), 3 km (2 mi) below the surface.

Whitehall forecastMore in Montana

Map

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

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The earthquake

Magnitude
2.9 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2018-07-24 06:18:57 UTC
Depth
2.9 km (1.8 mi), shallow
Epicenter
45.731° N, 112.126° W
Region
Montana
Felt reports
4
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
2.9ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.05 · 52 stations
3.05ML, local (Richter)Montana Bureau of Mines and GeologyFinal · ±0.326 · 31 stations

Did you feel it?

4 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 2.2 km horizontally, 7.4 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
52°
Stations used
39

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 5 in the 30 days before it.

After

  1. 1.817 km S of Whitehall, Montana · 2994 days ago · 5 km deep · 2 km away
  2. 2.416 km WNW of Pony, Montana · 2993 days ago · 5 km deep · 4 km away
  3. 1.917 km S of Whitehall, Montana · 2993 days ago · 5 km deep · 2 km away
  4. 1.84 km W of Ponderosa Pines, Montana · 2992 days ago · 4 km deep · 64 km away
  5. 1.617 km S of Whitehall, Montana · 2986 days ago · 5 km deep · 2 km away
  6. 2.217 km S of Whitehall, Montana · 2984 days ago · 4 km deep · 2 km away
  7. 1.96 km NE of Logan, Montana · 2976 days ago · 3 km deep · 63 km away
  8. 1.78 km SSW of Dillon, MT · 2974 days ago · 7 km deep · 62 km away
  9. 2.126 km ENE of Wisdom, Montana · 2961 days ago · 3 km deep · 81 km away
  10. 2.46 km W of Willow Creek, Montana · 2956 days ago · 3 km deep · 32 km away
  11. 1.81 km NE of Boulder, Montana · 2955 days ago · 7 km deep · 58 km away
  12. 2.37 km W of Willow Creek, Montana · 2954 days ago · 5 km deep · 32 km away
  13. 2.26 km W of Willow Creek, Montana · 2953 days ago · 3 km deep · 32 km away
  14. 1.717 km S of Whitehall, Montana · 2951 days ago · 6 km deep · 2 km away
  15. 1.933 km WNW of Twin Bridges, Montana · 2948 days ago · 1 km deep · 50 km away
  16. 1.74 km WSW of Three Forks, Montana · 2935 days ago · 3 km deep · 43 km away

Before

  1. 3.317 km S of Whitehall, Montana · 2994 days ago · 10 km deep · 2 km away · felt by 14
  2. 2.615 km SSE of Elkhorn, Montana · 3000 days ago · 7 km deep · 48 km away
  3. 2.88 km NE of Alder, Montana · 3011 days ago · 9 km deep · 40 km away · felt by 1
  4. 1.817 km S of Whitehall, Montana · 3015 days ago · 5 km deep · 1 km away
  5. 3.317 km SSW of Whitehall, Montana · 3015 days ago · 5 km deep · 5 km away · felt by 7

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000gcdk (also filed as mb80303189). Read Sun, Oct 4, 2026, 4:24 AM UTC.