Information For a 3.3 Earthquake on 07/23/1987 near Harrison, MT

An earthquake of magnitude 3.3 and depth of 4.60 kilometers occurred 12.17 miles from Harrison, MT in Madison County at 08:23 AM.

07/23/1987 - Earthquake Incident Location
Earthquake Details
Location: 12.17 miles from Harrison, MT in Madison County, MT
Date: 07/23/1987
Time: 08:23 AM
Magnitude: 3.3 Mag
Depth: 4.60 km
More Earthquake Incidents on 07/23/1987

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Area Highlights

Natural Disasters Risk

  • Hail Risk Hail Risk is Very Low
  • Tornados Tornado Risk is Very Low
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