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WWUS20 KWNS 082245

SEL0

SPC WW 082245

TXZ000-090600-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 400

NWS Storm Prediction Center Norman OK

545 PM CDT Mon Oct 8 2018



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  The Pecos Valley and Edwards Plateau of Texas



* Effective this Monday afternoon and Tuesday morning from 545 PM

  until 100 AM CDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible

  Scattered large hail events to 1.5 inches in diameter possible

  A tornado or two possible



SUMMARY...Thunderstorms are ongoing in a loose band along an outflow

boundary/front across west central Texas, with other more isolated

storms farther east in the warm sector, and farther south near the

high terrain just across the Rio Grande.  A mix of supercells and

line segments is expected, with the potential to produce large hail

and damaging winds through late evening.  The storm environment

could become a little more favorable for rotating storms and a

tornado or two late this evening into the overnight hours across the

Edwards Plateau.



The severe thunderstorm watch area is approximately along and 65

statute miles east and west of a line from 50 miles east northeast

of Big Spring TX to 55 miles southeast of Dryden TX. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU0).



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 399...



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

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

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

21025.



...Thompson

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