WW 632 SEVERE TSTM IL MO 120640Z – 121500Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 632 NWS Storm Prediction Center Norman OK 140 AM CDT Sat Aug 12 2023 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Central and southern Illinois Eastern Missouri * Effective this Saturday morning from 140 AM until 1000 AM CDT. * Primary threats include... Isolated very large hail events to 2 inches in diameter possible Isolated damaging wind gusts to 70 mph possible SUMMARY...Clusters of organized thunderstorms should move eastward to southeastward out of northern MO, posing a continued threat for large hail and damaging to severe gusts after exiting watch 631. Conditional potential exists for upscale growth of a better-organized, wind-producing complex. The severe thunderstorm watch area is approximately along and 55 statute miles either side of a line from 55 miles north northwest of Saint Louis MO to 60 miles south southeast of Mattoon IL. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU2). 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 631... 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 550. Mean storm motion vector 29035. ...Edwards
