The weather Impact Level for Wednesday 12/21 to Friday 12/23 is: Moderate to High

A strong cold front will bring dangerously cold air to all of southeast Wyoming and western Nebraska. Wind chills lower than -40F to potentially -70F are expected over a large area on Wednesday and Thursday of this week. A Flash Freeze event is likely when the cold front sweeps through the area on Wednesday, with snow squalls being a possible hazard.