WW 139 SEVERE TSTM IA MO 240200Z - 240500Z URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 139 NWS Storm Prediction Center Norman OK 900 PM CDT Thu Apr 23 2026 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Southeast Iowa Northeast Missouri * Effective this Thursday night from 900 PM until Midnight CDT. * Primary threats include... Scattered damaging wind gusts to 70 mph possible Isolated large hail events to 1.5 inches in diameter possible A tornado or two possible SUMMARY...A line of thunderstorms over northern Missouri and central Iowa will track eastward into eastern Iowa this evening, with a continued risk of locally damaging wind gusts or perhaps a tornado. The severe thunderstorm watch area is approximately along and 35 statute miles east and west of a line from 65 miles northeast of Ottumwa IA to 55 miles south southeast of Ottumwa IA. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU9). 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 136...WW 137...WW 138... AVIATION...A few severe thunderstorms with hail surface and aloft to 1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 25030. ...Hart Read more

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