The strongest earthquake to hit the region in years, as well as 54 smaller quakes, occurred from Saturday night to early Sunday afternoon in Southeast Idaho, startling tens of thousands of residents.The quakes were felt in Caribou County, where all 55 occurred, as well as in cities in northern Utah and throughout Southeast Idaho. It’s unknown when the earthquake swarm will end. Earthquake swarms have been

known to continue for weeks or even months.In recent decades Southeast Idaho has seen infrequent instances in which one to three weak earthquakes occur near the Western Wyoming border. Local authorities say they cannot ever remember any earthquake swarm in Southeast Idaho that comes even close to the current series of temblors shaking the region. READ MORE