EASTERN COLORADO — A severe weather setup is in focus across the high plains of eastern Colorado on Thursday, May 21, 2026, where at least a couple of supercells are possible capable of producing all hazard modes. The overall risk is rated at Level 2 out of 5, with high-based hailers expected to be the dominant storm mode given moisture depth running a bit on the dry side through the afternoon. A brief tornado window opens later in the evening as moisture increases, while scattered storms elsewhere across the broader region may produce gusty winds and small hail.
High-Based Hailers Expected as Dominant Storm Mode Across Eastern Colorado Thursday
With moisture depth running slightly on the dry side, high-based supercells capable of producing hail are forecast to be the primary storm mode across eastern Colorado Thursday afternoon. The hail threat carries a 15 percent probability across the core zone covering Denver southward through Pueblo, with a broader 5 percent hail probability extending across a wider corridor…