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SEL4 URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 584 NWS Storm Prediction Center Norman OK 615 PM CDT Wed Jul 31 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Western and Central Iowa Northern Missouri * Effective this Wednesday night and Thursday morning from 615 PM until 100 AM CDT. * Primary threats include... Widespread damaging winds and isolated significant gusts to 90 mph likely Isolated large hail events to 1.5 inches in diameter possible A tornado or two possible SUMMARY...An intense severe-wind producing bow echo will continue eastward this evening into western and central Iowa and perhaps adjacent parts of northern Missouri. Numerous to widespread severe gusts (60-90 mph), and perhaps a tornado, are the primary hazards with this squall line as it moves east into the Watch area. The severe thunderstorm watch area is approximately along and 85 statute miles east and west of a line from 45 miles north northwest of Des Moines IA to 35 miles south southwest of Lamoni 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 579...WW 580...WW 581...WW 582...WW 583... AVIATION...A few severe thunderstorms with hail surface and aloft to 1.5 inches. Extreme turbulence and surface wind gusts to 80 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 26045. ...Smith