High Plains Storms Escalate with Tennis-Ball Hail, 80 MPH Blasts Near NE Colorado-NE Border — SevereWX

Thunderstorms flickering to life across far northeast Colorado are poised to intensify as they drift off higher terrain into richer moisture across western Nebraska this afternoon and evening.

The Storm Prediction Center highlights a 60% chance of a Severe Thunderstorm Watch as storms tap into 1000-3000 J/kg of MLCAPE, 30-40 knots of shear, and steep 8.5+ C/km lapse rates. Dewpoints climbing into the mid-to-upper 60s F will fuel the firepower, shifting threats from isolated activity to scattered severe producers.

Expect damaging straight-line winds of 65-80 mph and hail up to 2.5 inches (tennis ball size) as the well-mixed boundary layer supports robust downdrafts. A low-end tornado risk can't be ruled out, with potential peak intensities to 90 mph. Development should ramp up through 8 PM CDT, primarily affecting areas from near Sterling, Colorado, eastward into the Nebraska Panhandle.

This fits into broader Plains unrest, but locals from WFOs LBF, GLD, BOU, and CYS should monitor closely. Check SPC's graphic for the latest polygon.

Stay prepared: Keep an eye on radar, have a severe weather plan, and seek sturdy shelter if warnings hit. Download a weather app for real-time alerts.