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WWUS20 KWNS 172235

SEL0

SPC WW 172235

MNZ000-NDZ000-SDZ000-180600-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 380

NWS Storm Prediction Center Norman OK

535 PM CDT Fri Jul 17 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northern and central Minnesota

  Southeast North Dakota

  Northern South Dakota



* Effective this Friday afternoon and Saturday morning from 535

  PM until 100 AM CDT.



...THIS IS A PARTICULARLY DANGEROUS SITUATION...



* Primary threats include...

  Widespread damaging winds expected with scattered significant

    gusts to 90 mph likely

  Scattered large hail and isolated very large hail events to 2.5

    inches in diameter possible

  A couple tornadoes possible



SUMMARY...An intense linear-type complex of storms is expected to

evolve into a derecho this evening and produce

widespread/significant damaging winds as it accelerates

east-southeastward across the region. Isolated large hail is also

possible, and a tornado risk cannot be ruled out, particularly near

the warm front.



The severe thunderstorm watch area is approximately along and 85

statute miles north and south of a line from 85 miles north of

Mobridge SD to 45 miles east of Brainerd MN. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU0).



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 379...



AVIATION...A few severe thunderstorms with hail surface and aloft to

2.5 inches. Extreme turbulence and surface wind gusts to 80 knots. A

few cumulonimbi with maximum tops to 650. Mean storm motion vector

29040.



...Guyer

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