A magnitude 3.1 earthquake struck Caribou County Idaho, just before 3:30am Tuesday morning. The U.S Geological Survey says the quake was centered about 17 miles west of Afton, Wyoming, and about 25 miles northeast of Soda Springs. There have been no reports of injuries or damage from the temblor. The latest quake follows a smaller 2.3 magnitude earthquake that hit Monday, 13 miles east of Georgetown Idaho.