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URGENT - IMMEDIATE BROADCAST REQUESTED

Tornado Watch Number 107

NWS Storm Prediction Center Norman OK

1025 PM CDT Sat Apr 1 2017



The NWS Storm Prediction Center has issued a



* Tornado Watch for portions of

  South-central and southwest Texas



* Effective this Saturday night and Sunday morning from 1025 PM

  until 600 AM CDT.



* Primary threats include...

  A couple tornadoes possible

  Scattered large hail and isolated very large hail events to 4

    inches in diameter possible

  Isolated damaging wind gusts to 70 mph possible



SUMMARY...At first, a pair of thunderstorms moving out of Mexico

will pose a threat for large, damaging hail and severe gusts.  With

time, additional storm development is expected on either side of the

international border, moving into an environment increasingly

favorable for a tornado or two as well.  See SPC mesoscale

discussion 396 for initial meteorological reasoning.



The tornado watch area is approximately along and 45 statute miles

either side of a line from 20 miles west northwest of Del Rio TX to

45 miles east southeast of Junction TX. For a complete depiction of

the watch see the associated watch outline update (WOUS64 KWNS

WOU7).



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.



&&



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

surface and aloft to 4 inches. Extreme turbulence and surface wind

gusts to 60 knots. A few cumulonimbi with maximum tops to 550. Mean

storm motion vector 24025.



...Edwards

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