Cold Front Storms Charge Large Hail, 80 MPH Winds in Nebraska-South Dakota — SevereWX

Thunderstorms are developing and intensifying along a cold front stretching from north-central Nebraska into northeast South Dakota, where strong heating is rapidly eroding remaining inhibition in a moist air mass.

The Storm Prediction Center's latest Mesoscale Discussion (1524) flags a severe weather threat through around 5 PM CDT, with storms capable of producing 1.00-1.75 inch hail (golf ball to ping pong ball size) and 65-80 mph wind gusts. While effective shear around 20-25 knots and subtle rising mid-level heights will cap overall organization—preventing a major outbreak—any clustering could prompt a mesoscale discussion watch.

Convection has already sparked in central and northeast South Dakota, but surface heating in the upper 60s to low 70s dewpoints is fueling quicker destabilization than anticipated. Mid-level lapse rates near 8 C/km support hail potential, though lingering MLCIN has slowed initial storm buildup. As the boundary holds, the strongest cells could pack a punch with severe hail cores and outflow-driven gusts.

This setup sits peripheral to broader Northern Plains activity, keeping focus on isolated to clustered storms rather than supercells. Trends remain under close watch by SPC forecasters.

Stay prepared: Monitor radar updates via local NWS offices (LBF, UNR, ABR, FSD), have a severe weather plan ready, seek sturdy shelter if storms approach, and avoid travel under warned cells. Check SPC's site for watch updates.