High-Based Central High Plains Storms Target 80 MPH Winds, Clusters Forming — SevereWX

High-Based Central High Plains Storms Target 80 MPH Winds, Clusters Forming

Scattered thunderstorms are firing across the high terrain from central Colorado into southeastern Wyoming, setting up a notable severe weather threat this afternoon. SPC's Mesoscale Discussion 1542 highlights an 80% chance of one or more Severe Thunderstorm Watches soon to cover portions of the central High Plains.

Aided by heating, upslope flow, and a subtle mid-level disturbance, these high-based storms (LCLs 2-3+ km) feature steep low-level lapse rates and deep mixed layers. This setup favors efficient downward transport of momentum, driving severe wind gusts up to 65-80 mph—possibly higher in a couple spots. Moisture is limited near the Colorado foothills (dewpoints 40s F), but increases eastward, helping storms intensify.

Isolated large hail (1-1.75 inches) is possible too, especially with discrete cells, thanks to steep mid-level lapse rates and strengthening shear northward. Expect upscale growth into linear clusters by evening as cold pools merge, ramping up the wind risk.

The action spans zones in NE (LBF), KS (DDC, GLD), CO (PUB, BOU), and WY (CYS). Peak threats through 6 PM CDT (2100Z), but clusters could persist into evening.

Stay tuned to SPC for watch updates and radar for storm evolution. Preparedness tip: Secure outdoor items, avoid elevated areas during storms, and have a weather app ready for alerts.