National Weather Service United States Department of Commerce

Showers and thunderstorms will develop by mid to late afternoon across the mountains and I-25 Corridor and then move across the plains this evening. Isolated severe storms will be possible across the plains with damaging winds and hail up to 1" in diameter. In addition, areas of locally heavy rainfall will be possible.
Showers and storms will become numerous by mid-afternoon Monday over the mountains, spreading onto the Denver metro and eastern CO plains by late afternoon/early evening. Rainfall may be heavy at times and localized flash flooding is possible.