The strongest earthquake to hit the region in years as well as 61 smaller quakes occurred Saturday night to Sunday night in Southeast Idaho, startling tens of thousands of residents. Authorities said it does not appear that the quakes have caused any injuries to people or damage to structures (ADVICE ON WHAT TO DO IF AN EARTHQUAKE HITS YOUR TOWN IS AT THE END OF THIS ARTICLE). The quakes were felt in Caribou County, where all 62 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. Five of the quakes occurred early Sunday evening - the