

780 

WWUS20 KWNS 192025

SEL9

SPC WW 192025

ARZ000-OKZ000-TXZ000-200400-



URGENT - IMMEDIATE BROADCAST REQUESTED

Tornado Watch Number 249

NWS Storm Prediction Center Norman OK

325 PM CDT Fri May 19 2017



The NWS Storm Prediction Center has issued a



* Tornado Watch for portions of

  northwest Arkansas

  southern and eastern Oklahoma

  northwest and north central Texas



* Effective this Friday afternoon and evening from 325 PM until

  1100 PM CDT.



* Primary threats include...

  A couple tornadoes possible

  Scattered damaging wind gusts to 70 mph likely

  Scattered large hail and isolated very large hail events to 2.5

    inches in diameter possible



SUMMARY...Increasing thunderstorm development is expected along an

outflow boundary across the region through the late afternoon and

evening.  Initial storm development may include supercells, with a

risk for severe hail and perhaps a couple of tornadoes, before

activity consolidates into an upscale growing cluster of storms with

increasing potential for damaging wind gusts this evening.



The tornado watch area is approximately along and 70 statute miles

north and south of a line from 35 miles west of Stephenville TX to

Fort Smith AR. For a complete depiction of the watch see the

associated watch outline update (WOUS64 KWNS WOU9).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A Tornado Watch means conditions are favorable for

tornadoes and 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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 246...WW 247...WW 248...



AVIATION...Tornadoes and a few severe thunderstorms with hail

surface and aloft to 2.5 inches. Extreme turbulence and surface wind

gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean

storm motion vector 23035.



...Kerr

