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WWUS20 KWNS 122022

SEL3

SPC WW 122022

NEZ000-SDZ000-130300-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 273

NWS Storm Prediction Center Norman OK

325 PM CDT Thu Jul 12 2018



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  North central and northeastern Nebraska

  South central and southeastern South Dakota



* Effective this Thursday afternoon and evening from 325 PM until

  1000 PM CDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible

  Isolated large hail events to 1 inch in diameter possible



SUMMARY...Thunderstorms should increase in coverage/intensity along

a slow-moving front from north central Nebraska into southeastern

South Dakota this afternoon into this evening.  The main threat will

be damaging winds with multicell storm clusters developing toward

the east-northeast.



The severe thunderstorm watch area is approximately along and 55

statute miles north and south of a line from 45 miles west of Mullen

NE to 10 miles east of Sioux Falls 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.



&&



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

1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few

cumulonimbi with maximum tops to 600. Mean storm motion vector

24020.



...Thompson

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