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WWUS20 KWNS 270503

SEL2

SPC WW 270503

ARZ000-MOZ000-OKZ000-271200-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 272

NWS Storm Prediction Center Norman OK

1205 AM CDT Sat May 27 2017



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northern Arkansas

  Southern Missouri

  Far northeast Oklahoma



* Effective this Saturday morning from 1205 AM until 700 AM CDT.



* Primary threats include...

  Isolated very large hail events to 2 inches in diameter possible

  Isolated damaging wind gusts to 70 mph possible

  A tornado or two possible



SUMMARY...Storms should continue to increase initially along a weak

frontal boundary and otherwise on the edge of a strong cap. Large

hail and perhaps locally damaging winds will be a possibility as

storms spread eastward.



The severe thunderstorm watch area is approximately along and 35

statute miles north and south of a line from 50 miles east southeast

of West Plains MO to 30 miles south of Grove OK. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU2).



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 271...



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

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

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

27025.



...Guyer

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