FXUS64 KEWX 141829
AFDEWX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1229 PM CST MON DEC 14 2009
.AVIATION...
LOW LEVEL GULF MOISTURE CONTINUES TO OVERRUN THE REGION EARLY
THIS AFTERNOON WITH CIGS AND VSBYS SLOW TO LIFT ALONG THE ESCARPMENT
DUE TO PERSISTENT DRIZZLE. I-35 CORRIDOR TERMINALS IFR CIGS/VSBYS
IN FOG AND PATCHY DRIZZLE EARLY THIS AFTERNOON GRADUALLY LIFTING
TO MVFR CIGS UNRSTD VSBYS BY LATE AFTERNOON. CIGS AGAIN LOWERING
TO IFR WITH FRONTAL PASSAGE AROUND MIDNIGHT WITH VSBYS OCNL LOWER
IN LIGHT RAIN. CIGS LIFTING TO MVFR AFTER SUNRISE. LIGHT AND
VARIABLE OR LIGHT NORTHEAST WINDS BECOMING NORTH 15 TO 25 KTS
AFTER MIDNIGHT. KDRT TERMINAL MVFR CIG WITH BRIEF MVFR VSBYS THIS
EVENING. VSBYS WILL IMPROVE TO VFR AFTER COLD FRONTAL PASSAGE
OVERNIGHT. LIGHT NORTHWEST WINDS BECOMING LIGHT NORTHEAST THIS
EVENING. A COLD FRONT PUSHING THROUGH AROUND 08Z WITH WINDS
BECOMING NORTHERLY 10 TO 20 KTS.
&&
.PREV DISCUSSION... /ISSUED 1017 AM CST MON DEC 14 2009/
UPDATE...
HAVE EXTENDED THE DENSE FOG ADVISORY UNTIL 11 AM FOR OUR SOUTHEAST
COUNTIES.
DISCUSSION...
VISIBILITIES WILL BE SLOW TO IMPROVE THIS MORNING AS MOISTURE IS
TRAPPED BY AN INVERSION EXTENDING 3 TO 5 K FT FROM THE SFC. THE
TRAPPING INVERSION WILL ALSO KEEP SKIES CLOUDY FOR MUCH OF THE
CWFA THE EXCEPTIONS WILL BE PORTIONS OF THE HILL COUNTRY AND
EDWARDS PLATEAU WHERE PARTLY CLOUDY SKIES WILL OCCUR DURING THE
AFTERNOON. HAVE ADJUSTED AFTERNOON HIGHS DOWNWARD A COUPLE OF
DEGREES FOR AREAS THAT WILL REMAIN CLOUDY TODAY. GRIDS AND TEXT
PRODUCTS UPDATED.
PREV DISCUSSION... /ISSUED 542 AM CST MON DEC 14 2009/
AVIATION...
LIFR/VLIFR CONDITIONS PREVAILING THRU ABOUT 15Z THIS MORNING WILL
LIFT TO IFR 15Z-17Z...BUT MVFR CIGS CONTINUING THRU MUCH OF THE
DAY. PATCHY -DZ THIS MORNING WILL GIVE WAY TO WIDELY SCT SHRA THIS
AFTERNOON MAINLY ALONG AND EAST OF I35 AS MINOR DISTURBANCES DRIFT
EASTWARD ACROSS THE AREA. A STRONG COLD FRONT WILL DROP SWD INTO
N TX THIS AFTERNOON AND APPROACH THE HILL COUNTRY BY 15/00Z. THE
CDFNT WILL MOVE TO NEAR KAUS BY 06Z AND KSAT & KDRT BY 08Z. LIGHT
AND VARIABLE WINDS AHEAD OF THE CDFNT AND GUSTY NLY WINDS OF 15-25
KNOTS BEHIND THE FRONT. SCT SHRA AND ISOLD TSRA ARE POSSIBLE WITH
THIS EVENING WITH THE CDFNT. OTHER IFR/MVFR CIGS WILL PREVAIL
BEHIND THE FRONT.
PREV DISCUSSION... /ISSUED 419 AM CST MON DEC 14 2009/
DISCUSSION...
A SOUPY MIX OF FOG...MIST AND DRIZZLE WILL CONTINUE THIS MORNING
MAINLY SOUTHEAST OF THE HILL COUNTRY. THE FOG WILL DISSIPATE BY
LATE MORNING BUT NOT MUCH SUNSHINE IS ANTICIPATED AS CLOUDS WILL
CONTINUE TO LINGER. SHOWERS ARE EXPECTED TO DEVELOP MAINLY ACROSS
AREAS SOUTH OF HIGHWAY 90 DUE TO AN ENHANCED SOUTHERLY LLJ. AFTERNOON
TEMPERATURES WILL BE HIGHLY DEPENDENT UPON CLOUD COVERAGE AND
RAIN-COOLED AREAS...BUT GENERALLY IN THE UPPER 60S TO LOWER 70S
ACROSS MOST OF THE REGION WITH COOLER POCKETS ACROSS THE SOUTH DUE
TO RAIN.
CHANCES FOR RAIN WILL EXPAND TO COVER MOST OF THE REGION OVERNIGHT
AND EARLY TUESDAY AHEAD OF AN APPROACHING COLD FRONT. RAINS WILL
END FROM NORTHWEST TO SOUTHEAST LATE TUESDAY AFTERNOON/EVENING.
TEMPERATURES ON TUESDAY WILL BE MUTED DUE TO THE COMBINATION OF
CLOUDS/RAIN AS WELL AS THE COLD AIR ADVECTION FILTERING IN BEHIND
THE FRONTAL BOUNDARY. FREEZING TEMPERATURES WILL RETURN TO THE
HILL COUNTRY WEDNESDAY MORNING.
THE UPPER PATTERN THROUGH THE MIDDLE OF THE WEEK WILL BE FLAT AND
ZONAL WHICH WILL MEAN DRY AND RELATIVELY SEASONABLE CONDITIONS.
ANOTHER COLD FRONT WILL PUSH THROUGH THE REGION ON FRIDAY. THERE
WILL NOT BE MUCH IN THE WAY OF MOISTURE RECOVERY DURING THE MIDDLE
OF THE WEEK...SO THIS SECOND FRONT IS EXPECTED TO BE DRY.
&&
.PRELIMINARY POINT TEMPS/POPS...
AUSTIN CAMP MABRY 45 52 34 56 35 / 40 20 10 - -
AUSTIN BERGSTROM INTL AIRPORT 45 53 32 55 32 / 50 30 10 - -
NEW BRAUNFELS MUNI AIRPORT 46 53 36 57 36 / 50 30 20 - -
BURNET MUNI AIRPORT 41 51 32 54 32 / 20 10 - - -
DEL RIO INTL AIRPORT 46 57 38 60 39 / 10 10 - - -
GEORGETOWN MUNI AIRPORT 40 52 34 55 35 / 30 20 - - -
HONDO MUNI AIRPORT 49 55 36 58 38 / 30 30 10 - -
SAN MARCOS MUNI AIRPORT 46 53 34 56 36 / 50 30 10 - -
LA GRANGE - FAYETTE REGIONAL 46 56 41 57 37 / 60 40 20 10 -
SAN ANTONIO INTL AIRPORT 47 55 37 57 38 / 50 30 20 - -
STINSON MUNI AIRPORT 48 55 40 57 37 / 50 40 20 - -
&&
.EWX WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
13/02
