

415 

WWUS20 KWNS 131945

SEL9

SPC WW 131945

OKZ000-TXZ000-140300-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 179

NWS Storm Prediction Center Norman OK

245 PM CDT Wed May 13 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Western Oklahoma

  The eastern Texas Panhandle and the Texas South Plains



* Effective this Wednesday afternoon and evening from 245 PM

  until 1000 PM CDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 2.5

    inches in diameter likely

  Scattered damaging wind gusts to 70 mph likely

  A tornado or two possible



SUMMARY...Thunderstorm development is expected along a dryline in

west Texas during the next 1-2 hours.  Storms Will likely form from

an area of developing cumulus clouds west-northwest of Lubbock and

more isolated storms along the dryline toward the northeast Texas

Panhandle.  The storms near Lubbock will tend to be high based and

capable of producing damaging outflow winds and hail as convection

grows into a larger cluster late this afternoon/evening.  The storm

environment could support supercells with isolated very large hail

across the eastern Texas Panhandle with the more isolated, initial

storms.  A tornado cannot be ruled out, especially if any discrete

storms can persist as far east as the western Oklahoma border.

Otherwise, a cluster of storms will likely spread into western

Oklahoma this evening with an attendant threat for damaging winds

and hail.



The severe thunderstorm watch area is approximately along and 85

statute miles east and west of a line from 75 miles north northwest

of Clinton OK to 75 miles south southwest of Childress TX. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU9).



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 60 knots. A

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

27020.



...Thompson

