SPC Severe Thunderstorm Watch 142
WW 142 SEVERE TSTM WI LM 181055Z – 181600Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 142 NWS Storm Prediction Center Norman OK 555 AM CDT Fri Apr 18 2025 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Southern Wisconsin Lake Michigan * Effective this Friday morning from 555 AM until 1100 AM CDT. * Primary threats include... Scattered large hail and isolated very large hail events to 2 inches in diameter possible Scattered damaging wind gusts to 70 mph possible SUMMARY...Multiple supercells and bowing structures will spread quickly eastward this morning across southern Wisconsin. Scattered large hail around 1-2 inches in diameter and 60-70 mph wind gusts may occur with this activity. The severe thunderstorm watch area is approximately along and 30 statute miles north and south of a line from 40 miles west of Madison WI to 30 miles east northeast of Racine WI. 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. && 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 500. Mean storm motion vector 27050. ...Gleason
