

789 

WWUS20 KWNS 162220

SEL3

SPC WW 162220

NDZ000-SDZ000-170600-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 513

NWS Storm Prediction Center Norman OK

525 PM CDT Tue Jul 16 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Southern North Dakota

  Central and eastern South Dakota



* Effective this Tuesday afternoon and Wednesday morning from 525

  PM until 100 AM CDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 2.5

    inches in diameter possible

  Isolated significant damaging wind gusts to 75 mph possible

  A tornado or two possible



SUMMARY...A few discrete supercells developing along the

north-central South Dakota and south-central North Dakota border

region should persist, spreading east-southeast into eastern

portions of South Dakota and southeast North Dakota this evening.

Large hail may be the most predominant hazard.



The severe thunderstorm watch area is approximately along and 70

statute miles north and south of a line from 90 miles west of

Aberdeen SD to 60 miles east southeast of Aberdeen SD. 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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 511...WW 512...



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

28030.



...Grams

