National Weather Service United States Department of Commerce

A couple severe thunderstorms are expected to develop across the northeastern plains of Colorado this afternoon. The focus for storm development will be a dryline, which by early to mid afternoon should organize from near Cheyenne, Wyoming to near or just east of Greeley and then to around Limon. Storms that develop and move to the northeast will be capable of producing very large hail, damaging winds, and even a tornado. Meanwhile, dry and very warm weather will persist around Denver and points south/west. Fire danger will reach critical levels in the Park County area. A cold front will move across the plains later this evening, ushering in cooler weather and bringing a better chance of showers and thunderstorms for Monday afternoon and evening.
Record heat is likely today and Sunday before cooler air arrives Monday. Thunderstorms with large hail and gusty winds will be possible Sunday and Monday.
Here are some heat safety tips to keep in mind this Memorial Day Weekend. Additionally, be sure to stay hydrated & check on elderly neighbors.