

706 

WWUS20 KWNS 252019

SEL6

SPC WW 252019

NEZ000-SDZ000-260400-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 436

NWS Storm Prediction Center Norman OK

320 PM CDT Tue Jul 25 2017



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northern Nebraska

  Southern and eastern South Dakota



* Effective this Tuesday afternoon and evening from 320 PM until

  1100 PM CDT.



* Primary threats include...

  Scattered large hail likely with isolated very large hail events

    to 2.5 inches in diameter possible

  Scattered damaging winds and isolated significant gusts to 80

    mph possible

  A tornado or two possible



SUMMARY...Clusters of scattered severe storms should develop along a

front through this evening. Large hail and damaging winds will be

the primary hazards.



The severe thunderstorm watch area is approximately along and 65

statute miles either side of a line from 50 miles west of Mullen NE

to 40 miles east northeast of Watertown SD. 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.



&&



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

2.5 inches. Extreme turbulence and surface wind gusts to 70 knots. A

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

25025.



...Grams

