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WWUS20 KWNS 050421

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URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 551

NWS Storm Prediction Center Norman OK

1120 PM CDT Sun Aug 4 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Extreme northwestern Minnesota

  Parts of northern and eastern North Dakota



* Effective this Sunday night and Monday morning from 1120 PM

  until 700 AM CDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 2

    inches in diameter possible

  Scattered damaging wind gusts to 70 mph possible



SUMMARY...Elevated thunderstorms will likely increase in an

east-west band and move southeastward overnight across central and

eastern North Dakota, potentially reaching northwestern Minnesota

during the early morning hours.  The initial storms, some of which

could be supercells, will pose a threat for large hail and damaging

winds.  The damaging wind threat could increase some with storm

clustering overnight.



The severe thunderstorm watch area is approximately along and 60

statute miles north and south of a line from 60 miles north of

Dickinson ND to 30 miles northeast of Fargo ND. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU1).



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

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

few cumulonimbi with maximum tops to 500. Mean storm motion vector

30030.



...Thompson

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