

185 

WWUS20 KWNS 092156

SEL9

SPC WW 092156

NDZ000-100500-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 309

NWS Storm Prediction Center Norman OK

455 PM CDT Fri Jun 9 2017



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Central and Eastern North Dakota



* Effective this Friday afternoon from 455 PM until Midnight 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...Thunderstorms are developing over central North Dakota and

are expected to spread eastward into eastern North Dakota this

evening.  Large hail and damaging wind gusts will be possible with

stronger storms.  In addition, an isolated tornado may be possible,

mainly close to the international border.



The severe thunderstorm watch area is approximately along and 95

statute miles east and west of a line from 65 miles north northwest

of Devils Lake ND to 25 miles south southwest of Jamestown ND. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU9).



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

26025.



...Weiss

