Boise shakes again with one of the strongest aftershocks of the March earthquake
A strong aftershock shook Boise around 11:20 p.m. Wednesday — continuing what has been a string of earthquakes since the March 31 main event.
Wednesday’s quake registered as a 4.6 magnitude, according to the U.S. Geological Survey. That would make it the second-strongest aftershock recorded so far.
The March 31 earthquake was a 6.5 magnitude, the second-strongest in Idaho history. It was centered in the mountains 19 miles northwest of Stanley.
The strongest aftershock was a 4.8, about 35 minutes after the main quake. There were 4.4s on March 31, May 13 and May 21. Six more have been magnitude 4.0 or larger, and there have been hundreds of smaller quakes.
Wednesday’s quake arrived with a short shake and a brief pause before a stronger shake that lasted several seconds.
The original 6.5 earthquake caused some building damage in Custer County and collapsed the Stanley Lake Inlet Beach.
This story was originally published June 24, 2020 at 11:40 PM.
