WW 243 SEVERE TSTM IA MN NE SD 242155Z - 250400Z URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 243 NWS Storm Prediction Center Norman OK 455 PM CDT Sun May 24 2026 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northwest Iowa Southwest Minnesota Northeast Nebraska Southeast South Dakota * Effective this Sunday afternoon and evening from 455 PM until 1100 PM CDT. * Primary threats include... Scattered large hail and isolated very large hail events to 2 inches in diameter possible Isolated damaging wind gusts to 65 mph possible SUMMARY...High-based supercells are expected from northeast Nebraska across southeast South Dakota into southwest Minnesota this evening, and storms could spread into northwest Iowa before weakening early tonight. The storms will be capable of producing large hail (1.5-2 inches in diameter) and isolated severe outflow gusts (60-65 mph). The severe thunderstorm watch area is approximately along and 65 statute miles east and west of a line from 40 miles north of Redwood Falls MN to 30 miles west southwest of Norfolk NE. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU3). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && AVIATION...A few severe thunderstorms with hail surface and aloft to 2 inches. Extreme turbulence and surface wind gusts to 55 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 27015. ...Thompson Read more

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