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URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 353
NWS Storm Prediction Center Norman OK
255 PM CDT Mon Aug 27 2018
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
central and southern Minnesota
* Effective this Monday afternoon and evening from 255 PM until
1000 PM CDT.
* Primary threats include...
Widespread damaging winds likely with isolated significant gusts
to 75 mph possible
Scattered large hail events to 1.5 inches in diameter possible
A tornado or two possible
SUMMARY...Storms are expected to continue developing over the upper
Mississippi Valley and Great Lakes region this afternoon and
evening, eventually evolving into an organized MCS capable of
numerous instances of damaging wind and a couple of tornadoes.
The severe thunderstorm watch area is approximately along and 90
statute miles north and south of a line from 10 miles southwest of
Worthington MN to 70 miles south of Ironwood MI. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU3).
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
AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector