Cheyenne Weather Service Warns About Large Hail, Possible Tornado
Flash flooding is also possible in some areas (areas in green on the map on left below).
The weather service issued the following situation report on Sunday morning:
".-Severe thunderstorms will be possible across much of the region later this afternoon and evening.
- Main hazards will be large hail up to golf-ball size, 60-70 mph winds, and a brief tornado will be possible. "