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Austin, TX Local Weather thread
09-30-2009, 12:08 PM
Post: #20
Austin, TX Local Weather thread
Area Forecast Discussion
Issued by NWS Austin/San Antonio, TX

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000
FXUS64 KEWX 301555
AFDEWX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1055 AM CDT WED SEP 30 2009

.UPDATE...
WEAKENING FRONTAL ZONE SOUTH AND WEST OF SAN ANTONIO RESULTED IN
SCATTERED LIGHT RAIN SHOWERS EARLY THIS MORNING. THIS AREA HAS DEW
POINTS RUNNING IN THE LOW TO MID 70S AND IS EXPECTED TO TRANSLATE
EASTWARD DURING THE DAY. A BRIEF AND WEAK THUNDERSTORM WILL BE
POSSIBLE IN THIS AREA WHERE INSOLATION WILL BE BEST. THE UPPER
RIDGE WILL OTHERWISE PRECLUDE CONVECTION WITH ABUNDANT CLOUDS
LIKELY TO HOLD TEMPS OVER OUR NORTHERN COUNTIES A FEW DEGREES
COOLER THAN PREVIOUSLY PROJECTED. AS THE FRONTAL ZONE CONTINUES TO
WASH OUT, THE EVENING WEATHER SHOULD BE QUIET; HOWEVER, DEEP LOW
LEVEL MOISTURE AND INCREASING ENERGY ALOFT COMING IN FROM THE WEST
COULD SUPPORT ISOLATED SHOWERS AFTER MIDNIGHT. THE PROGRESSIVE
RIDGE ALOFT SHOULD TRANSLATE EAST WITH THE BASE OF A PROGRESSIVE
NORTHERN PLAINS TROUGH BEGINNING TO ENHANCE RAIN POTENTIAL FOR
THURSDAY. A BROAD AREA OF DEVELOPING TROPICAL ACTIVITY WEST OF
MEXICO SHOULD ENHANCE THIS RAIN POTENTIAL BY INCREASING PACIFIC
MOISTURE INTO AN AREA THAT WOULD NORMALLY BE A DRY SLOT REGION.
THE TROPICAL PATTERN WILL NEED TO BE MONITORED CLOSELY FOR LATER
PERIODS, SINCE A FRONTAL ZONE SETTING UP THIS WEEKEND COULD MAKE
FOR A CLASSIC OCTOBER HEAVY RAIN PATTERN. MANY UNCERTAINTIES
REMAIN, WITH THE DEVELOPMENT OF THE TROPICAL SYSTEM AND THE
STRENGTH, DEPTH AND LOCATION OF THE FRONTAL ZONE.

&&

.PREV DISCUSSION... /ISSUED 642 AM CDT WED SEP 30 2009/

AVIATION...
CIGS 1 THSD TO 2 THSD BKN TO OVC IS EXPECTED THRU 15Z. ISOLATED
SHOWERS ARE EXPECTED ALONG AND WEST OF A KPEZ TO KT82 LINE THIS
MORNING. CONDITIONS ARE FORECAST TO BECOME 3 THSD TO 5 THSD SCT
AFTER 15Z TO 4 THSD TO 8 THSD SCT AFTER 19Z. CIGS ARE EXPECTED
TO FORM TONIGHT AROUND 1 THSD TO 2 THSD FT AFTER 05Z. WINDS ARE
FORECAST TO BE S AND SE 10 TO 15 KNOTS...WITH OCCASIONAL GUSTS
VCNTY KDRT AROUND 20 TO 25 KNOTS IN THE AFTERNOON.

PREV DISCUSSION... /ISSUED 610 AM CDT WED SEP 30 2009/

UPDATE...
ISOLATED LIGHT SHOWERS DEVELOPED UNDER THE RETURN CLOUDINESS.
INSERTED ISOLATED MORNING SHOWERS IN THE FORECAST WESTERN HALF OF
CWA.

PREV DISCUSSION... /ISSUED 329 AM CDT WED SEP 30 2009/

DISCUSSION...
A PROGRESSIVE SYNOPTIC FLOW WILL BRING AN UPPER TROF ACROSS THE
ROCKIES AND INTO THE CENTRAL U.S. FRIDAY. THE LOW LEVEL JET
STRENGTHENS OVERHEAD AND BRINGS NIGHTTIME STRATUS AND DAYTIME
FAIR WEATHER CU. MIN TEMPS WILL RISE WHILE DAYTIME HIGHS HOLD
STEADY. INCREASING PRECIPITABLE WATER AND MINOR DISTURBANCES ALOFT
WILL GENERATE SOME SHOWERS AND THUNDERSTORMS THURSDAY.

FRIDAY THROUGH TUESDAY---
WITH THE UPPER HIGH HOLDING FIRM ACROSS MEXICO AND THE GULF OF
MEXICO, THE UPPER FLOW REMAINS FAIRLY ZONAL OVER TEXAS. A COLD
FRONT DROPS INTO CENTRAL TEXAS FRIDAY AND MAKES IT TO THE COAST
FRIDAY EVENING. FROM THERE IS BECOME STATIONARY AND RETURNS AS A
WARM FRONT SATURDAY NIGHT. WITH P.W.`S IN PLACE, SHOWERS AND
THUNDERSTORMS WILL DEVELOP ALONG THE COLD FRONT.

FROM SUNDAY THROUGH WEDNESDAY-
THE FLOW ALOFT BECOMES INCREASINGLY SOUTHWESTERLY, PUMPING
SUBTROPICAL CIRRUS CLOUDS ACROSS THE U.S. SINCE THERE WILL BE NO
AIRMASS EXCHANGE THIS PERIOD, TEMPS WILL REMAIN SLIGHTLY ABOVE
SEASONAL NORMALS WITH DRY LINE ACTIVITY POSSIBLE OVER VAL VERDE
COUNTY. THE LOW LEVEL JET WILL PROVIDE NOCTURNAL LIFT ALONG THE
ESCARPMENT FOR DRIZZLE SUNDAY AND STREAMER SHOWERS MONDAY.

&&

.PRELIMINARY POINT TEMPS/POPS...
AUSTIN CAMP MABRY 84 74 92 70 85 / 10 10 20 30 10
AUSTIN BERGSTROM INTL AIRPORT 85 73 93 69 86 / 10 10 20 30 10
NEW BRAUNFELS MUNI AIRPORT 85 72 91 72 85 / 20 10 20 30 10
BURNET MUNI AIRPORT 82 73 88 64 84 / 10 10 20 30 10
DEL RIO INTL AIRPORT 91 74 96 70 90 / 20 10 10 10 -
GEORGETOWN MUNI AIRPORT 83 73 89 64 84 / 10 10 20 30 10
HONDO MUNI AIRPORT 86 72 93 69 88 / 20 10 10 20 10
SAN MARCOS MUNI AIRPORT 85 73 94 72 85 / 20 10 20 30 10
LA GRANGE - FAYETTE REGIONAL 87 74 89 71 83 / 10 10 30 20 20
SAN ANTONIO INTL AIRPORT 85 74 91 72 85 / 20 10 20 20 10
STINSON MUNI AIRPORT 87 74 92 74 87 / 20 10 20 20 10

&&

.EWX WATCHES/WARNINGS/ADVISORIES...
NONE.

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Messages In This Thread
Austin, TX Local Weather thread - Shoshana - 07-26-2009, 12:40 AM
Austin, TX Local Weather thread - Shoshana - 08-01-2009, 01:02 AM
Austin, TX Local Weather thread - SpecialK - 08-02-2009, 07:02 PM
Austin, TX Local Weather thread - Shoshana - 08-03-2009, 11:47 PM
Austin, TX Local Weather thread - Shoshana - 08-20-2009, 03:19 PM
Austin, TX Local Weather thread - Shoshana - 09-07-2009, 08:50 PM
Austin, TX Local Weather thread - ROLLTIDE - 09-16-2009, 03:57 AM
Austin, TX Local Weather thread - ROLLTIDE - 09-18-2009, 05:45 PM
Austin, TX Local Weather thread - ROLLTIDE - 09-20-2009, 04:31 PM
Austin, TX Local Weather thread - ROLLTIDE - 09-21-2009, 01:07 PM
Austin, TX Local Weather thread - ROLLTIDE - 09-22-2009, 10:34 AM
Austin, TX Local Weather thread - ROLLTIDE - 09-23-2009, 02:26 PM
Austin, TX Local Weather thread - ROLLTIDE - 09-27-2009, 09:36 PM
Austin, TX Local Weather thread - ROLLTIDE - 09-28-2009, 11:37 AM
Austin, TX Local Weather thread - ROLLTIDE - 09-29-2009, 11:53 AM
Austin, TX Local Weather thread - ROLLTIDE - 09-30-2009 12:08 PM
Austin, TX Local Weather thread - ROLLTIDE - 10-01-2009, 10:46 AM
Austin, TX Local Weather thread - ROLLTIDE - 10-02-2009, 01:01 PM
Austin, TX Local Weather thread - ROLLTIDE - 10-04-2009, 08:31 AM
Austin, TX Local Weather thread - ROLLTIDE - 10-05-2009, 01:30 PM
Austin, TX Local Weather thread - ROLLTIDE - 10-06-2009, 10:53 AM
Austin, TX Local Weather thread - ROLLTIDE - 10-07-2009, 12:39 PM
Austin, TX Local Weather thread - ROLLTIDE - 10-08-2009, 03:17 PM
Austin, TX Local Weather thread - ROLLTIDE - 10-21-2009, 03:01 PM
Austin, TX Local Weather thread - ROLLTIDE - 10-24-2009, 02:08 PM
Austin, TX Local Weather thread - ROLLTIDE - 10-25-2009, 03:22 PM
Austin, TX Local Weather thread - ROLLTIDE - 10-27-2009, 12:25 PM
Austin, TX Local Weather thread - ROLLTIDE - 10-31-2009, 02:11 PM
Austin, TX Local Weather thread - ROLLTIDE - 11-16-2009, 04:08 PM
Austin, TX Local Weather thread - ROLLTIDE - 11-18-2009, 09:10 AM
Austin, TX Local Weather thread - ROLLTIDE - 11-20-2009, 09:21 AM
Austin, TX Local Weather thread - ROLLTIDE - 11-21-2009, 10:34 PM
Austin, TX Local Weather thread - ROLLTIDE - 11-22-2009, 07:57 AM
Austin, TX Local Weather thread - ROLLTIDE - 11-24-2009, 06:29 AM
Austin, TX Local Weather thread - ROLLTIDE - 12-01-2009, 05:02 AM
Austin, TX Local Weather thread - ROLLTIDE - 12-01-2009, 02:55 PM
Austin, TX Local Weather thread - ROLLTIDE - 12-02-2009, 07:12 AM
Austin, TX Local Weather thread - ROLLTIDE - 12-03-2009, 08:29 AM
Austin, TX Local Weather thread - ROLLTIDE - 12-09-2009, 10:22 PM
Austin, TX Local Weather thread - ROLLTIDE - 12-16-2009, 12:10 AM

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