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Displaying AFOS PIL: AFDEWX Received: 2014-12-22 01:37 UTC
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940 FXUS64 KEWX 220137 AFDEWX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 737 PM CST SUN DEC 21 2014 .UPDATE... LATEST IR SATELLITE SHOWS LOW LEVEL CLOUD DECK DETERIORATING WEST OF I35 CORRIDOR. KDRT SHOWING SOME LIGHT FOG ALREADY AT 01Z. BOTH RUC AND HRRR INDICATE ZERO DEGREE DEWPOINT DEPRESSIONS ALONG THE RIO GRANDE UP TO KDRT AND UP ONTO THE ESCARPMENT BEGINNING AROUND 06Z. WITH A TIGHTENING SFC GRADIENT OVER OUR WEST AND RESULTANT WINDS IN THE 10-15 MPH RANGE ALREADY...DONT THINK FOG WILL BE ABLE TO SET IN ON THE ESCARPMENT MUCH...HOWEVER INCLUDED AREAS OF FOG ALONG THE RIO GRANDE VALLEY AND SOUTH OF THE ESCARPMENT BY 09Z. ALSO UPDATED SKY GRIDS...HOURLY T...AND HOURLY DEW T GRIDS TO CAPTURE LATEST TRENDS. && .PREV DISCUSSION... /ISSUED 630 PM CST SUN DEC 21 2014/ UPDATE...00Z AVIATION BELOW. AVIATION...CLEARING HAS OCCURRED LATE THIS AFTERNOON AND EARLY EVENING ALONG THE RIO GRANDE...WITH VFR CONDITIONS NOW AT DRT. AT 00Z OVC MVFR STRATUS DECK STRETCHES FROM JUST NORTH OF DRT TO SAT/SSF/AUS THEN ENCOMPASSES MOST AREAS ALONG AND EAST OF I-35 ACROSS SOUTH-CENTRAL TEXAS. SHALLOW MOISTURE TRAPPED BENEATH INVERSION WILL CONTINUE OVERNIGHT...WITH SATURATION AND CLOUD DECK LOWERING AFTER 06Z. HAVE INDICATED IFR CONDITIONS DEVELOPING FIRST AT SAT/SSF AFTER 06Z AND LATER AT AUS AFTER 09Z. FORECAST SOUNDINGS AND MOS INDICATE THERE COULD BE LIFR CEILINGS AND IFR VISIBILITY DEVELOPING ALONG THE I-35 CORRIDOR TOWARDS DAYBREAK. FARTHER WEST...HAVE INDICATED IFR CEILINGS DEVELOPING BACK TOWARDS DRT AROUND 12Z...ALTHOUGH CONFIDENCE IS LOWER. SOUTHWEST AND WESTERLY LOW LEVEL FLOW SHOULD PROMOTE BETTER MIXING AND CLEARING ALONG AND WEST OF I-35 LATE MONDAY MORNING INTO THE EARLY AFTERNOON. PREV DISCUSSION... /ISSUED 339 PM CST SUN DEC 21 2014/ SHORT TERM (TONIGHT THROUGH MONDAY NIGHT)... CLEARING HAS BEEN VERY STUBBORN THIS AFTERNOON BUT AREAS OUT WEST AND SOUTHWEST ARE FINALLY STARTING TO SHOW SOME SUNSHINE. UPPER TROF AXIS IS OVER THE STATE RIGHT NOW WITH MORE CLOUDINESS AND MOISTURE UPSTREAM OVER THE ROCKIES. MOST AREAS WILL CLOUD BACK UP OVERNIGHT AND HAVE MENTIONED SOME PATCHY FOG OVER SOUTHERN AREAS. AREAS THAT CLEAR THIS EVENING WILL HAVE A BETTER CHANCE OF GETTING THE FOG. LOW AND MID LEVEL WIND FIELDS WILL HAVE A WESTERLY COMPONENT ON MONDAY MEANING WARMER TEMPERATURES AND MORE SUNSHINE. MOST AREAS SHOULD REACH INTO THE 70S. SHOULD BE A VERY PLEASANT DAY. ALTHOUGH WE LOSE THE LOW CLOUDS TOMORROW NIGHT WE WILL STILL HAVE SOME MID AND HIGH CLOUDS AROUND WITH THE UPSTREAM SYSTEM OVER THE ROCKIES. LOWS MONDAY NIGHT EXPECTED TO BE IN THE 40S TO LOW 50S. LONG TERM (TUESDAY THROUGH SUNDAY)... WILL SEE A COLD FRONT PUSH THROUGH THE CWA EARLY TUE MORNING WHILE A DEEP TROF DEVELOPS OVER THE CENTRAL AND SOUTHERN PLAINS. AN UPPER WAVE WILL PUSH SE OUT OF THE ROCKIES ON TUE WITH SOME OF ITS ENERGY STAYING OVER SOUTH CENTRAL TEXAS EARLY WED. WITH THE COLD FRONT AND UPPER LEVEL TROFFING...LOOKS LIKE TUE WILL BE MOSTLY CLOUDY AND COOLER. 700 MB TROF AXIS SHIFTS EAST LATE TUE NIGHT WHICH SHOULD MEAN A CLEARING PATTERN ON WED ALTHOUGH TEMPS WILL REMAIN COOL AS THE SURFACE HIGH REMAINS OVER WEST TEXAS AND THE ROCKIES. THE UPPER PATTERN FLATTENS AS TEXAS IS AT THE BASE OF A LONG WAVE TROFFING PATTERN ACROSS MOST OF THE COUNTRY BY MID WEEK. MOISTURE LEVELS WILL REMAIN LOW FOR THU AND FRI WHICH WILL TRANSLATE TO MOSTLY SUNNY SKIES...COOL/COLD NIGHTS...AND COOL AFTERNOON HIGHS IN THE 60S. WILL SEE A RETURN OF MORNING LOWS IN THE 30S MIDDLE TO THE END OF THE WEEK. ANOTHER COLD FRONT IS FORECAST FOR FRIDAY BUT SHOULD COME THROUGH DRY AS THERE WILL BE LITTLE TO NO MOISTURE TO WORK WITH. && .PRELIMINARY POINT TEMPS/POPS... AUSTIN CAMP MABRY 52 71 48 57 38 / 10 - 10 20 - AUSTIN BERGSTROM INTL AIRPORT 51 71 47 57 37 / 10 - 10 20 - NEW BRAUNFELS MUNI AIRPORT 50 72 49 58 38 / 10 - 10 10 - BURNET MUNI AIRPORT 48 70 45 54 36 / 10 - 10 20 - DEL RIO INTL AIRPORT 43 75 48 59 37 / 10 - 10 10 - GEORGETOWN MUNI AIRPORT 50 70 46 55 36 / 10 - 10 20 - HONDO MUNI AIRPORT 48 73 46 61 34 / 10 - 10 10 - SAN MARCOS MUNI AIRPORT 51 72 47 57 36 / 10 - 10 10 - LA GRANGE - FAYETTE REGIONAL 52 72 51 56 39 / 10 - 10 20 - SAN ANTONIO INTL AIRPORT 52 73 49 59 38 / 10 - 10 10 - STINSON MUNI AIRPORT 51 72 50 60 38 / 10 - 10 10 - && .EWX WATCHES/WARNINGS/ADVISORIES... NONE. && $$ MESOSCALE/AVIATION...76 SYNOPTIC/GRIDS...03 PUBLIC SERVICE/DATA COLLECTION...12