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WWUS20 KWNS 091714

SEL3

SPC WW 091714

MNZ000-NDZ000-100000-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 423

NWS Storm Prediction Center Norman OK

1215 PM CDT Sun Aug 9 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northwest Minnesota

  Eastern North Dakota



* Effective this Sunday afternoon and evening from 1215 PM until

  700 PM 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

  A tornado or two possible



SUMMARY...Strong to severe thunderstorms have initially formed

across northeast North Dakota, with additional storms expected to

develop through the afternoon farther south into southeast North

Dakota. This activity will spread east with embedded supercells and

line segments into northwest Minnesota through early evening.



The severe thunderstorm watch area is approximately along and 85

statute miles east and west of a line from 45 miles north of Thief

River Falls MN to 70 miles south southwest of Fargo ND. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU3).



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 550. Mean storm motion vector

28035.



...Grams

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