80+ MPH Winds and 2-Inch Hail Pummeling Central SD, Spreading into SE ND — SevereWX

A robust cluster of severe thunderstorms is hammering central South Dakota early Monday morning, unleashing wind gusts exceeding 80 mph and hail larger than 2 inches in diameter. This system, anchored by a southern supercell, is shifting northeastward into northeast South Dakota and southeast North Dakota, per the latest SPC Mesoscale Discussion 1375.

Radar data shows the storms have already produced multiple 80+ mph gusts and baseball-sized hail over south-central SD. Forecasters expect the complex to maintain intensity through at least 10:45 AM CDT, fueled by a moist, unstable air mass, lift along a theta-e advection zone, and 50-60 kt deep-layer shear matching CAM guidance.

Peak threats include:

The affected polygon stretches from roughly Pierre, SD, northeast toward Jamestown, ND. SPC pegs severe thunderstorm watch odds at 95%.

Check the SPC MD graphic and local NWS updates from ABR, FSD, BIS, and FGF offices for the latest.

Stay prepared: Monitor radar closely, secure outdoor items, seek shelter if storms approach, and have multiple alert sources ready for rapid changes.