WW 497 SEVERE TSTM IL WI 240540Z – 241200Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 497 NWS Storm Prediction Center Norman OK 1240 AM CDT Sun Jul 24 2022 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northern Illinois Southern Wisconsin * Effective this Sunday morning from 1240 AM until 700 AM CDT. * Primary threats include... Scattered damaging wind gusts to 70 mph possible A tornado or two possible SUMMARY...A complex of thunderstorms, initially in the eastern parts of severe-thunderstorm watch 496, will continue to pose a threat of severe wind as it moves into favorably moist/unstable air astride the IL/WI border region, and before it encounters cooler, more-stable outflow air near Lake Michigan. The severe thunderstorm watch area is approximately along and 40 statute miles north and south of a line from 70 miles west of Janesville WI to 40 miles east southeast of Janesville WI. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU7). 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 496... 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 550. Mean storm motion vector 29035. ...Edwards
