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000 FXUS64 KEWX 242332 AFDEWX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 532 PM CST TUE NOV 24 2009 .AVIATION... VFR CONDITIONS WILL PREVAIL THROUGH THE FORECAST PERIOD. VISIBLE SATELLITE IMAGERY SHOWS SOME NORTHWARD MID-LEVEL CLOUD PROGRESSION...BUT DRY AIR ADVECTION FROM THE NORTH SHOULD KEEP SKIES SKC AT ALL TAF SITES AFTER 00 UTC. && .PREV DISCUSSION... /ISSUED 300 PM CST TUE NOV 24 2009/ DISCUSSION... THIS AFTERNOON SFC HIGH PRESSURE WAS BUILDING SOUTHWARD ACROSS SOUTH CENTRAL TEXAS USHERING A DRY AND STABLE AIRMASS. SFC WINDS WILL DECOUPLE OVERNIGHT AND COMBINED WITH LOW DEWPOINTS...A FREEZE IS LIKELY ACROSS PORTIONS OF THE HILL COUNTRY AND EDWARDS PLATEAU. A FREEZE WARNING WILL NOT BE ISSUED SINCE THESE COUNTIES EXPERIENCED THE FIRST FREEZE OF THE SEASON ON THE 17TH AND 18TH OF THIS MONTH. AFTER A COLD START WEDNESDAY MORNING...AFTERNOON TEMPS WILL REBOUND TO THE MID AND UPPER 60S UNDER SUNNY SKIES. SFC HIGH PRESSURE WILL STILL BE LOCATED OVER SOUTH CENTRAL TEXAS WEDNESDAY NIGHT/THURSDAY MORNING...SO ANOTHER FREEZE IS POSSIBLE ACROSS PORTIONS OF THE HILL COUNTRY. A WARMING TREND WILL BEGIN ON THURSDAY AND CONTINUE INTO SATURDAY IN ADVANCE OF THE NEXT UPPER LEVEL TROF. THE NEXT CHANCE OF SHOWERS AND THUNDERSTORMS ASSOCIATED WITH A COLD FRONT IS EXPECTED ON SUNDAY. ATTM THE GFS IS FASTER AND MORE PROGRESSIVE WITH THE UPPER TROF AND ATTENDANT COLD FRONT THAN THE ECMWF. WE WILL GO WITH THE GFS SOLUTION FOR THIS FCST. THE BEST CHANCE OF SHOWERS AND THUNDERSTORMS ON SUNDAY WILL BE ACROSS OUR EAST AND SOUTHEAST COUNTIES WHERE DEEPER GULF MOISTURE WILL RESIDE. ONCE AGAIN A DRY AND COLD AIRMASS WILL OVERSPREAD THE REGION SUNDAY NIGHT THROUGH TUESDAY FOLLOWING THE COLD FRONT. THUS ANOTHER FREEZE WILL BE POSSIBLE NEXT TUESDAY MORNING ACROSS THE HILL COUNTRY AND THE ADJACENT BALCONES ESCARPMENT. && .PRELIMINARY POINT TEMPS/POPS... AUSTIN CAMP MABRY 43 66 42 70 44 / 0 0 0 0 0 AUSTIN BERGSTROM INTL AIRPORT 36 65 32 69 38 / 0 0 0 0 0 NEW BRAUNFELS MUNI AIRPORT 37 66 36 70 42 / 0 0 0 0 0 BURNET MUNI AIRPORT 37 65 35 66 39 / 0 0 0 0 0 DEL RIO INTL AIRPORT 39 68 41 67 44 / 0 0 0 0 0 GEORGETOWN MUNI AIRPORT 38 65 37 68 40 / 0 0 0 0 0 HONDO MUNI AIRPORT 35 68 34 71 40 / 0 0 0 0 0 SAN MARCOS MUNI AIRPORT 38 67 34 70 42 / 0 0 0 0 0 LA GRANGE - FAYETTE REGIONAL 41 67 39 66 44 / 0 0 0 0 0 SAN ANTONIO INTL AIRPORT 39 68 38 72 43 / 0 0 0 0 0 STINSON MUNI AIRPORT 39 67 37 72 42 / 0 0 0 0 0 && .EWX WATCHES/WARNINGS/ADVISORIES... NONE. && $$ 04/26