

575 

WWUS20 KWNS 082312

SEL8

SPC WW 082312

NDZ000-090600-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 248

NWS Storm Prediction Center Norman OK

515 PM MDT Tue Jun 8 2021



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Western North Dakota



* Effective this Tuesday afternoon from 515 PM until Midnight

  MDT.



* Primary threats include...

  Scattered damaging winds and isolated significant gusts to 75

    mph possible

  Scattered large hail and isolated very large hail events to 2.5

    inches in diameter possible

  A tornado or two possible



SUMMARY...Severe storms developing in eastern Montana will spread

northeastward into western North Dakota this evening, with an

attendant threat for large hail and damaging winds.  A tornado or

two may occur early this evening with storms near the west central

North Dakota border, where supercells will interact with a surface

warm front and outflow boundary.



The severe thunderstorm watch area is approximately along and 35

statute miles east and west of a line from 60 miles north northeast

of Williston ND to 65 miles south southwest of Dickinson ND. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU8).



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 246...WW 247...



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

2.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A

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

21020.



...Thompson

