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SEL4 URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 654 NWS Storm Prediction Center Norman OK 1055 PM CDT Mon Aug 26 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northwest Iowa Southwest Minnesota Northern Nebraska Southeast South Dakota * Effective this Monday night and Tuesday morning from 1055 PM until 600 AM CDT. * Primary threats include... Scattered large hail and isolated very large hail events to 2 inches in diameter possible Scattered damaging wind gusts to 70 mph possible SUMMARY...Mainly elevated thunderstorms should pose some threat for severe hail up to 1-2 inches in diameter as they move generally east-northeastward through the overnight hours. If these thunderstorms can consolidate into a cluster, then a threat for severe/damaging winds around 60-70 mph may be realized. The severe thunderstorm watch area is approximately along and 50 statute miles north and south of a line from 10 miles southwest of Valentine NE to 25 miles north northeast of Spencer IA. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU4). 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. && OTHER WATCH INFORMATION...CONTINUE...WW 650...WW 651...WW 653... AVIATION...A few severe thunderstorms with hail surface and aloft to 2 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 26035. ...Gleason