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URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 253
NWS Storm Prediction Center Norman OK
1010 AM CDT Sat May 20 2017
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
South Central Texas
* Effective this Saturday morning and afternoon from 1010 AM
until 500 PM CDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2.5
inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
A tornado or two possible
SUMMARY...Strong/severe storms currently west of San Antonio are
expected to develop eastward and southeastward along an outflow
boundary into a very warm and moist air mass. The stronger storms
will be capable of producing large hail and damaging wind gusts.
The severe thunderstorm watch area is approximately along and 60
statute miles either side of a line from 90 miles west northwest of
Cotulla TX to 20 miles east northeast of Victoria TX. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU3).
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
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