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SEL1 URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 421 NWS Storm Prediction Center Norman OK 725 PM CDT Sat Jun 15 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Western and Central Iowa Far Northeastern Kansas Northwest Missouri * Effective this Saturday night and Sunday morning from 725 PM until 200 AM CDT. * Primary threats include... Scattered damaging winds and isolated significant gusts to 75 mph possible Isolated large hail events to 1.5 inches in diameter possible A tornado or two possible SUMMARY...A squall line will move northeastward into the Watch area this evening. Severe gusts (60-75 mph) are possible with the more intense portions of the squall line as it likely progresses west to east across much of the Watch area. A tornado is possible, especially with any longer-lived mesovortex circulation embedded within the line. A large hail risk may accompany more cellular storms later this evening into the early overnight. The severe thunderstorm watch area is approximately along and 55 statute miles east and west of a line from 15 miles north northeast of Fort Dodge IA to 40 miles west of Chillicothe MO. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU1). 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 417...WW 418...WW 419...WW 420... AVIATION...A few severe thunderstorms with hail surface and aloft to 1.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 23035. ...Smith