HELENA — If you felt some rumbling Sunday afternoon in Helena, that was an earthquake.
The United States Geological Survey (USGS) confirmed a 2.7 earthquake hit about 2 miles northeast of Helena around 3:38 p.m. on March 9.
MTN
The Richter Scale is measured exponentially for the size and strength of earthquakes. Sunday's earthquake was about 1000 times smaller than the July 6, 2017 earthquake near Lincoln that rumbled Helena and caused property damage, and about 2500 times smaller than the 6.2 quake in 1935 that destroyed buildings.
(Watch to learn more about the 2017 earthquake near Lincoln)
Five years later: the July 6, 2017 Lincoln earthquake
Editor's note: The USGS has revised the size of the earthquake on March 9 to 2.7 in magnitude.
