Freeze Warning for the Snake River Plain Freeze Warning for the Snake River Plain Idaho Falls (KIFI) - With cold air in place from the Friday cold front, we'll see freezing temperatures early Sunday morning. The National Weather Service in Pocatello has issued a Freeze Warning. FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 9 AM MDT SUNDAY: WHERE…Shoshone, Richfield, Carey, Mud Lake, INL, Rexburg, St. Anthony, Pocatello, Blackfoot, American Falls, Shelley, Fort Hall and Aberdeen. IMPACTS…Frost and freeze conditions may kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. temperatures dip just below 28 degrees, which would be a Hard