WW 257 SEVERE TSTM MI MN WI LS 182030Z – 190300Z
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
