FXUS64 KEWX 151745
AFDEWX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1145 AM CST TUE DEC 15 2009
.AVIATION...
VFR SKIES WILL PREVAIL WITH BKN-OVC CIGS ABOVE 4K FT, EXCEPT OCNL
MVFR CIGS 2-3K FT ARE POSSIBLE SOUTH OF KDRT TO KSAT TO K3T5 LINE.
SOME SHRA ARE POSSIBLE MAINLY ACROSS THE SRN AREAS, HOWEVER HAVE
LEFT OUT OF TAFS DUE TO UNCERTAINTY ON TIMING AND LOCATION. NLY
WINDS OF 10 TO 20 KTS WITH GUSTS UP TO 25 KTS WILL PREVAIL TODAY,
DECREASING TO 6 TO 12 KTS TONIGHT AND WEDNESDAY.
&&
.PREV DISCUSSION... /ISSUED 1119 AM CST TUE DEC 15 2009/
UPDATE...HIGHS FOR THIS AFTERNOON WERE TWEAKED DOWNWARD JUST A
LITTLE TO REFLECT COLD ADVECTION PATTERN. ALSO CLOUDS SHOULD
DECREASE ACROSS THE HILL COUNTRY AND OVER NORTHERN PORTIONS OF THE
CWA PER SATELLITE TRENDS. UPDATED GRIDS AND TEXT FORECASTS ALREADY
SENT.
PREV DISCUSSION... /ISSUED 528 AM CST TUE DEC 15 2009/
AVIATION...
A COLD FRONT PUSHING SWD THRU S CENTRAL TX WILL LIFTING CIGS AND
VSBYS TO MVFR WITH THE COLDER/DRIER NLY WINDS OF 15 TO 20 KNOTS.
ISOLATED SHRA ACCOMPANIED THE FRONT. CIGS WILL CONTINUE TO LIFT TO
MVFR AND REMAIN OVC...THEN GRADUALLY LIFT TO VFR AT 3-5 THSD FEET
BY 16/00Z. ISOLATED SHRA WILL CONTINUE BEHIND THE FRONT AS MINOR
DISTURBANCES ALOFT TRACK EASTWARD ACROSS THE AREA. THE SHRA WILL
BE MORE NUMEROUS SOUTH OF INTERSTATE 10 AND HIGHWAY 90.
PREV DISCUSSION... /ISSUED 439 AM CST TUE DEC 15 2009/
DISCUSSION...
THE COLD FRONT HAS PUSHED THROUGH THE REGION WITH ANY LINGERING
FOG RAPIDLY CLEARING. WINDS HAVE SHIFTED TO THE NORTH BUT THE COLD
AIR WILL LAG A FEW HOURS BEHIND. TEMPERATURES THIS AFTERNOON WILL
RANGE FROM THE UPPER 40S ACROSS THE HILL COUNTRY TO NEAR 60 ACROSS
THE SOUTHERN COUNTIES. OVERCAST CONDITIONS ARE EXPECTED TO REMAIN
IN THE PICTURE THROUGHOUT THE DAY. WITH DRIER AIR FILTERING INTO
THE HILL COUNTRY AND EDWARDS PLATEAU WILL LIKELY SEE LOW CLOUDS
MIX OUT...BUT STILL ANTICIPATING HIGH CLOUDS TO REMAIN. WITH THIS
OVERRUNNING PATTERN...LIGHT RAIN IS POSSIBLE MAINLY ALONG AND
SOUTHEAST OF THE I-35 CORRIDOR BUT AMOUNTS WILL BE ON THE ORDER OF
ONLY A FEW HUNDREDTHS OF AN INCH AT BEST.
THE UPPER LEVEL LOW PERCHED TO THE NORTHWEST OF OUR AREA WILL
SLOWLY SLIDE TO THE SOUTHEAST TODAY BEFORE REACHING THE COAST ON
THURSDAY. THIS WILL KEEP CLOUDS AND CHANCES FOR RAIN IN THE
PICTURE THROUGH THE MIDDLE OF THE WEEK AND WILL EXIT FROM WEST TO
EAST EARLY THURSDAY. THE BEST CHANCES FOR RAIN WILL AGAIN BE
ACROSS OUR SOUTHERN AND SOUTHEASTERN COUNTIES. RAINFALL WILL
GENERALLY BE LIGHT...BUT COULD SEE TOTALS FROM TODAY THROUGH
THURSDAY REACH CLOSE TO AN INCH SOUTH OF HIGHWAY 90.
WITH THE OVERCAST AND RAINY CONDITIONS AND CONTINUING COLD AIR
ADVECTION...TEMPERATURES ON WEDNESDAY WILL REMAIN IN THE LOWER TO
MID 50S. A SLIGHT WARMING TREND IS IN STORE FOR THURSDAY AND
FRIDAY BEFORE THE NEXT FRONT ARRIVES FRIDAY NIGHT/EARLY SATURDAY.
THIS FROPA WILL BE DRY. TEMPERATURES BEHIND THE FRONT WILL BE
SEASONABLY COOL.
&&
.PRELIMINARY POINT TEMPS/POPS...
AUSTIN CAMP MABRY 45 36 51 38 62 / 10 20 20 20 10
AUSTIN BERGSTROM INTL AIRPORT 45 33 52 36 59 / 20 30 20 20 10
NEW BRAUNFELS MUNI AIRPORT 51 37 51 36 61 / 20 40 40 20 10
BURNET MUNI AIRPORT 41 33 54 35 59 / 10 10 10 10 -
DEL RIO INTL AIRPORT 56 38 56 40 65 / 10 30 10 - -
GEORGETOWN MUNI AIRPORT 40 33 51 36 60 / 10 10 20 10 10
HONDO MUNI AIRPORT 55 39 54 38 61 / 20 50 40 20 10
SAN MARCOS MUNI AIRPORT 48 37 50 36 59 / 20 30 30 20 10
LA GRANGE - FAYETTE REGIONAL 47 41 51 39 58 / 20 30 40 30 20
SAN ANTONIO INTL AIRPORT 53 39 55 39 62 / 20 40 40 20 10
STINSON MUNI AIRPORT 55 42 52 38 61 / 20 50 50 20 10
&&
.EWX WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
02/04
