Information For a 4.5 Earthquake on 03/21/1978 near Petrolia, CA

An earthquake of magnitude 4.5 and depth of 11.00 kilometers occurred 11.72 miles from Petrolia, CA in Humboldt County at 02:05 PM.

03/21/1978 - Earthquake Incident Location
Earthquake Details
Location: 11.72 miles from Petrolia, CA in Humboldt County, CA
Date: 03/21/1978
Time: 02:05 PM
Magnitude: 4.5 Mag
Depth: 11.00 km
More Earthquake Incidents on 03/21/1978

Area Highlights

Natural Disasters Risk

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