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WWUS20 KWNS 081958

SEL0

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MNZ000-NDZ000-090400-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 270

NWS Storm Prediction Center Norman OK

300 PM CDT Mon Jun 8 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northwest Minnesota

  Northeast North Dakota



* Effective this Monday afternoon and evening from 300 PM until

  1100 PM CDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 3

    inches in diameter likely

  Scattered damaging wind gusts to 70 mph possible

  A tornado or two possible



SUMMARY...Thunderstorm development is expected from northeast North

Dakota into northwest Minnesota the next couple of hours, along a

slow-moving surface front.  The storm environment will be favorable

for supercells with very large hail, and perhaps an isolated tornado

or two with storms interacting with the front.  Otherwise, storms

may grow into one or more clusters late this afternoon through this

evening, with a continuing threat for large hail and damaging winds.



The severe thunderstorm watch area is approximately along and 60

statute miles east and west of a line from 25 miles southeast of

Grand Forks ND to 25 miles northeast of Hallock 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.



&&



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

3 inches. Extreme turbulence and surface wind gusts to 60 knots. A

few cumulonimbi with maximum tops to 550. Mean storm motion vector

24030.



...Thompson

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