WWUS20 KWNS 042047 SEL0 SPC WW 042047 ILZ000-INZ000-050000- URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 430 NWS Storm Prediction Center Norman OK 350 PM CDT Mon Jul 4 2022 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northeast Illinois Northwest Indiana * Effective this Monday afternoon and evening from 350 PM until 700 PM CDT. * Primary threats include... Isolated damaging wind gusts to 65 mph possible A tornado or two possible SUMMARY...Two clusters should slowly progress east-southeast across a portion of northeast Illinois into northwest Indiana with a threat for damaging winds and a brief/weak tornado, before likely weakening in a few hours. The severe thunderstorm watch area is approximately along and 40 statute miles east and west of a line from 45 miles north northwest of Marseilles IL to 75 miles southeast of Marseilles IL. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU0). 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. && AVIATION...A few severe thunderstorms with hail surface and aloft to 1 inch. Extreme turbulence and surface wind gusts to 55 knots. A few cumulonimbi with maximum tops to 550. Mean storm motion vector 30020. ...Grams