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SEL7 URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 257 NWS Storm Prediction Center Norman OK 330 PM CDT Sat May 18 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Western Upper Michigan Minnesota Arrowhead Central and Northern Wisconsin Lake Superior * Effective this Saturday afternoon and evening from 330 PM until 1000 PM CDT. * Primary threats include... Scattered damaging wind gusts to 70 mph possible Scattered large hail events to 1.5 inches in diameter possible SUMMARY...Thunderstorms are developing along a cold front over western Wisconsin and northeast Minnesota. These storms will track eastward through the early evening, posing a risk of hail and damaging winds. The severe thunderstorm watch area is approximately along and 50 statute miles east and west of a line from 30 miles north northeast of Grand Marais MN to 35 miles south of Mosinee 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. && 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 26030. ...Hart