

888 

WWUS20 KWNS 132253

SEL6

SPC WW 132253

MNZ000-NDZ000-140600-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 326

NWS Storm Prediction Center Norman OK

555 PM CDT Tue Jun 13 2017



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northwestern Minnesota

  Eastern North Dakota



* Effective this Tuesday afternoon and Wednesday morning from 555

  PM until 100 AM CDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 2.5

    inches in diameter possible

  Scattered damaging wind gusts to 70 mph possible

  A tornado or two possible



SUMMARY...Severe-thunderstorm potential is increasing across the

watch area, north of a surface warm front and northeast of a surface

low, as the air mass at and especially above the surface continues

to destabilize.  The main risks will be damaging wind and large hail

from activity emerging out of South Dakota, with an arching band or

complex of storms likely to evolve and sweep northeastward.  A

tornado or two cannot be ruled out near the southern end of the

watch, closer to that warm front.



The severe thunderstorm watch area is approximately along and 90

statute miles east and west of a line from 75 miles south southeast

of Jamestown ND to 15 miles west northwest of Warroad MN. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU6).



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 323...WW 324...WW 325...



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

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

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

23035.



...Edwards

