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165 

WWUS20 KWNS 211502

SEL4

SPC WW 211502

ARZ000-OKZ000-212000-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 154

NWS Storm Prediction Center Norman OK

1005 AM CDT Fri Apr 21 2017



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Western Arkansas

  Eastern Oklahoma



* Effective this Friday morning and afternoon from 1005 AM until

  300 PM CDT.



* Primary threats include...

  Scattered damaging winds likely with isolated significant gusts

    to 75 mph possible

  Isolated very large hail events to 2 inches in diameter possible



SUMMARY...A well-organized/fast-moving line of thunderstorms will

continue moving quickly east-southeast across central and eastern

Oklahoma and into western Arkansas this morning.  The storms will be

accompanied by a risk for damaging winds, along will the possibility

for isolated large hail.



The severe thunderstorm watch area is approximately along and 55

statute miles north and south of a line from 60 miles west northwest

of Mcalester OK to 75 miles east southeast of Fort Smith AR. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU4).



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 153...



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

2 inches. Extreme turbulence and surface wind gusts to 65 knots. A

few cumulonimbi with maximum tops to 500. Mean storm motion vector

29045.



...Goss

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