Tornado Warning 63, NWS San Angelo, TX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
848 PM CDT FRI JUN 11 1999

WILL UPDATE ZONES TO REFLECT THE NEW SEVERE TSTM WATCH. REMAINDER OF
THE FORECAST LOOKS OK. NORTHERN AREA OF PRECIPITATION WHICH IS JUST
NORTHWEST OF THE CWA APPEARS TO BE DRIVEN BY SHORTWAVE ENERGY WHICH
WILL MOVE NORTHEAST ACROSS THE PANHANDLE. THE SOUTHERN AREA...WHICH
IS JUST WEST OF THE EDWARDS PLATEAU APPEARS TO BE MORE OF A BOUNDARY
DRIVEN EVENT WITH AN EXITING AREA OF UPPER LEVEL SUPPORT.
NEVERTHELESS...LOOKS AS IF THE TWO AREAS WILL BEGIN TO FILL AND
SUPPORT CURRENT POPS.
INSTABILITIES QUITE IMPRESSIVE WITH CAPES OF ABOUT 4000 J/KG OVER THE
WESTERN BIG COUNTRY. THIS WILL SUPPORT SEVERE ACTIVITY WHICH WILL
BEGIN MOVING INTO THIS AREA WITHIN THE NEXT COUPLE OF HOURS. LLJ TO
INTENSIFY SOME OVER THE AREA LATER TONIGHT AND THIS SHOULD SUPPORT
THE OVERNIGHT SEVERE EVENT. ALREADY SEEING SOME CAPE INDUCED ROTATION
WITH SOME OF THE STORMS SO PERHAPS A TORNADO OR TWO WILL BE POSSIBLE.
WILL HOLD TEMPS AND WINDS IN CHECK FOR NOW WITH NO CHANGES NEEDED.
WILL SEND UPDATED ZONES AFTER NEW WATCH IS RECEIVED.

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