000 FXUS64 KEWX 231149 AAA AFDEWX AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 549 AM CST MON NOV 23 2009 .DISCUSSION... SEE AVIATION SECTION FOR THE 12Z AVIATION FORECAST. && .AVIATION... PATCHY FOG ACROSS THE REGION WITH IFR/MVFR CIGS AND VSBYS. AS MIXING BEGINS AFTER 14Z FOG WILL BEGIN TO DISSIPATE AND CIGS WILL GRADUALLY LIFT. LIGHT AND VARIABLE WINDS THIS MORNING WILL BECOME S/SE AFTER 15Z AND INCREASE TO 10 TO 15 KTS. AFTER 06Z MVFR CIGS DEVELOP WITH S WINDS 5 TO 10 KTS. COLD FRONT WILL MOVE SOUTH OVERNIGHT AND SHOULD BEGIN TO MOVE THROUGH THE TAF SITES BY 08Z. SOME -RA/-SHRA ARE POSSIBLE ALONG AND JUST AHEAD OF THE COLD FRONT. AFTER FROPA 08Z-10Z WINDS WILL INCREASE OUT OF THE NORTH AT SPEEDS OF 5 TO 10 KTS. AFTER SUNRISE WINDS WILL INCREASE TO NEAR 15 KTS WITH GUSTS OVER 20 KTS. && .PREV DISCUSSION... /ISSUED 407 AM CST MON NOV 23 2009/ DISCUSSION... CLEAR SKIES THIS MORNING HAVE LED TO GOOD RADIATIONAL COOLING AND FOG HAS ALREADY BEGUN TO FORM ACROSS THE AREA. WILL CONTINUE DENSE FOG ADVISORY THROUGH MID MORNING. ONCE FOG BURNS OFF...SURFACE HIGH PRESSURE IN PLACE FOR MOSTLY SUNNY DAY WITH HIGH TEMPS LOOKING TO BE ABOUT TEN DEGREES HIGHER THAN SUN. MODELS ARE IN GOOD AGREEMENT OF A COLD FRONT MOVING THROUGH SOUTH CENTRAL TX TONIGHT AND TUESDAY. MOISTURE AVAILABILITY IS NOT GREAT WITH DEW POINTS CURRENTLY IN THE FORTIES AND EXPECTED ONLY TO REACH AROUND 60 IN THE SOUTHEAST BEFORE THE FRONT MOVES THROUGH. THIS WILL MEAN FRONT WILL BE MAINLY DRY. HIGHEST POPS WILL BE CHANCE CATEGORY ACROSS THE SOUTH TUE MORNING. FRONT WILL BRING COOLER AIR AND TEMPS WILL MODERATE TUE AND REMAIN NEAR NORMAL THROUGH THE WEEK. STARTING WED...SFC HIGH PRESSURE AND UPPER LEVEL RIDGE WILL BUILD ACROSS TX AND LAST THROUGH THE END OF THE WORK WEEK. SAT THE HIGH WILL SHIFT TO THE EAST OPENING UP THE GULF AND ALLOWING A SLIGHT CHANCE FOR SHOWERS IN THE EASTERN COUNTIES SAT AND SUN. && .PRELIMINARY POINT TEMPS/POPS... AUSTIN CAMP MABRY 74 52 66 44 68 / 0 20 10 10 0 AUSTIN BERGSTROM INTL AIRPORT 75 52 66 39 69 / 0 20 10 10 0 NEW BRAUNFELS MUNI AIRPORT 75 53 66 43 70 / 0 20 20 10 0 BURNET MUNI AIRPORT 73 48 64 41 66 / 0 20 10 10 0 DEL RIO INTL AIRPORT 75 52 66 46 69 / 0 10 20 10 0 GEORGETOWN MUNI AIRPORT 73 50 65 42 67 / 0 20 10 10 0 HONDO MUNI AIRPORT 75 52 65 43 70 / 0 20 20 10 0 SAN MARCOS MUNI AIRPORT 75 52 64 42 68 / 0 20 10 10 0 LA GRANGE - FAYETTE REGIONAL 74 53 64 42 67 / 0 20 20 10 0 SAN ANTONIO INTL AIRPORT 75 54 67 45 69 / 0 20 20 10 0 STINSON MUNI AIRPORT 74 54 67 44 69 / 0 20 20 10 0 && .EWX WATCHES/WARNINGS/ADVISORIES... DENSE FOG ADVISORY UNTIL 10 AM CST THIS MORNING FOR THE FOLLOWING COUNTIES: ATASCOSA...BANDERA...BASTROP...BEXAR...BLANCO...BURNET... CALDWELL...COMAL...DE WITT...DIMMIT...EDWARDS...FAYETTE...FRIO... GILLESPIE...GONZALES...GUADALUPE...HAYS...KARNES...KENDALL...KERR... KINNEY...LAVACA...LEE...LLANO...MAVERICK...MEDINA...REAL...TRAVIS... UVALDE...VAL VERDE...WILLIAMSON...WILSON...ZAVALA. && $$ 05/10