A Severe Thunderstorm WATCH is now in effect for parts of south central and southwest Texas until 11am. Strong storms are ongoing across the southern Edwards Plateau region and are expected to build and move east today along the leading edge of a weak cold front moving into central and southwest Texas as this time.  Very large hail over 2 inches, high winds and isolated tornadoes are possible with any of these storms as they build eastward through the morning hours.  The Austin and San Antonio metroplexes are not currently threatened by any severe weather, but that’s expected to change later this morning as the current batch of storms north of Del Rio work their way east and into an increasingly unstable environment.  A WATCH means that conditions are favorable for severe weather development, so residents in the watch area need to stay alert and heed any warnings issued for their particular location.
SEVERE THUNDERSTORM WATCH NUMBER 163 NWS STORM PREDICTION CENTER NORMAN OK 420 AM CDT MON MAY 11 2015 THE NWS STORM PREDICTION CENTER HAS ISSUED A * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF SOUTH-CENTRAL AND SOUTHWEST TEXAS * EFFECTIVE THIS MONDAY MORNING FROM 420 AM UNTIL 1100 AM CDT. * PRIMARY THREATS INCLUDE... ISOLATED VERY LARGE HAIL EVENTS TO 2.5 INCHES IN DIAMETER POSSIBLE ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE A TORNADO OR TWO POSSIBLE SUMMARY...INITIALLY ISOLATED SEVERE THUNDERSTORMS OVER THE SOUTHERN EDWARDS PLATEAU REGION ARE EXPANDING IN COVERAGE AND MAY CONTINUE TO DO SO AS ACTIVITY MOVES INTO FAVORABLY UNSTABLE AIR MASS AHEAD OF A SLOW-MOVING COLD FRONT. LARGE HAIL AND ISOLATED SEVERE GUSTS ARE EXPECTED FROM THE MOST INTENSE CELLS. THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 45 STATUTE MILES EITHER SIDE OF A LINE FROM 110 MILES WEST OF HONDO TEXAS TO 45 MILES EAST OF AUSTIN TEXAS.
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