FXUS64 KEWX 102325
AFDEWX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
525 PM CST THU DEC 10 2009
.DISCUSSION...
SEE AVIATION SECTION.
&&
.AVIATION...
I35 TERMINALS ARE VFR AND WILL CONTINUE THAT WAY OVER NIGHT. MVFR
CIGS WILL MOVE IN BETWEEN 15Z AND 18Z TOMORROW. -RA EXPECTED TO
START BETWEEN 18Z AND 21Z WITH WARM MOIST SOUTHEASTERLY FLOW ABOVE A
COLD SURFACE LAYER.
MVFR CIGS AT DRT WILL CONTINUE FOR THE NEXT 24 HOURS.
&&
.PREV DISCUSSION... /ISSUED 359 PM CST THU DEC 10 2009/
DISCUSSION...
COLD AIR CONTINUES TO FILTER SOUTH INTO CENTRAL TX FROM THE
NORTHEAST WITH A STREAM OF HIGH CLOUDS HELPING TO MINIMIZE MIXING.
THIS WILL KEEP COOL TEMPS IN PLACE FOR FRIDAY INTO EARLY SATURDAY
AS A WEAK DISTURBANCE MOVES ACROSS AND GENERATES A LIGHT
OVERRUNNING PATTERN. THE BEST CHANCE OF RAIN WILL BE NEAR THE
COAST WHERE MOISTURE AND ISENTROPIC LIFT IS BEST. RAINFALL AMOUNTS
SHOULD BE GENERALLY LESS THAN ONE-QUARTER INCH. LOW CLOUDS DRIZZLE
AND FOG SHOULD LINGER INTO FRIDAY NIGHT WITH PATCHY FOG POSSIBLE
SATURDAY MORNING. THE SUBSIDENCE PATTERN BEHIND THE SHORTWAVE
SHOULD BE WEAK SO THE SUN MAY NOT COME OUT FOR LONG ON SUNDAY.
STILL THE MODELS ARE TRENDING FOR PLEASANT WARMING TO AROUND 70 OR
LOWER 70S FOR MOST AREAS. HAVE LEANED A BIT COOLER THAN THE MODELS
HERE AS THE GFS IN PARTICULAR HAS SHOWN A WARM DAYTIME BIAS.
A STRONGER PACIFIC DISTURBANCE IS EXPECTED MONDAY INTO EARLY
TUESDAY THAT SHOULD BRING THE NEXT DOSE OF COLD AIR. THE COLD AIR
OVER THE CENTRAL US SHOULD MODIFY OVER THE WEEKEND...SO THE
AIRMASS WITH THIS FRONT SHOULD BE A BIT LESS DENSE THAN AIRMASS
CURRENTLY SETTLED OVER TX. A WEAKER PATTERN OF ZONAL FLOW ALOFT
SHOULD ALLOW FOR FEWER CLOUDS AND BETTER DAYTIME AIR MODIFICATION.
EXPECT GOOD DIURNAL RANGES FOR LATE NEXT WEEK.
&&
.PRELIMINARY POINT TEMPS/POPS...
AUSTIN CAMP MABRY 38 45 43 60 47 / 10 40 50 - 10
AUSTIN BERGSTROM INTL AIRPORT 34 45 42 60 44 / 10 50 50 10 10
NEW BRAUNFELS MUNI AIRPORT 38 47 43 60 45 / 10 50 50 - -
BURNET MUNI AIRPORT 34 45 40 60 45 / - 30 40 - -
DEL RIO INTL AIRPORT 42 55 46 66 46 / - 10 10 - -
GEORGETOWN MUNI AIRPORT 34 45 41 59 45 / 10 40 50 10 10
HONDO MUNI AIRPORT 39 48 43 63 44 / 10 30 30 - -
SAN MARCOS MUNI AIRPORT 37 46 43 59 44 / 10 50 50 - 10
LA GRANGE - FAYETTE REGIONAL 37 47 44 56 46 / 20 70 60 10 10
SAN ANTONIO INTL AIRPORT 39 47 44 61 46 / 10 40 50 - -
STINSON MUNI AIRPORT 40 48 44 62 45 / 10 50 50 - -
&&
.EWX WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
01/05
