River Flood Warning 33, NWS Austin/San Antonio, TX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
700 AM CDT WED JUN 9 2010

.AVIATION...
I-35 CORRIDOR TERMINALS MVFR CIGS WITH OCNL IFR/LIFR CIGS IN
SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS. SOME OF THE
HEAVIER STORMS WILL LOWER VSBYS BELOW 3 MILES AND PRODUCE
DANGEROUS LIGHTNING. CIGS WILL GRADUALLY IMPROVE TO LOW VFR THIS
AFTERNOON BUT CONTINUED GOOD CHANCES FOR SHOWERS AND THUNDERSTORMS
LOCALLY LOWERING CIGS TO IFR/MVFR AND VSBYS BELOW 3 MILES. SHOWERS
AND THUNDERSTORMS BECOMING LESS NUMEROUS TONIGHT. EAST TO
SOUTHEAST WINDS 5 TO 10 KTS. KDRT TERMINAL MVFR CIGS TIL LATE
MORNING BECOMING VFR BY AFTERNOON WIDELY SCATTERED TO ISOLATED
SHOWERS AND THUNDERSTORMS WILL LOCALLY LOWER CONDITIONS. SOUTHEAST
WINDS 5 TO 10 KTS.

&&

.PREV DISCUSSION... /ISSUED 308 AM CDT WED JUN 9 2010/

DISCUSSION...
MCV CORE RAIN EVENT ONGOING ATTM ALONG THE I-35 CORRIDOR BETWEEN SAN
ANTONIO AND AUSTIN. RAINFALL RATES ARE ESTIMATED AT 1 TO 2 INCHES
AN HOUR WITHIN THE SLOW MOVING RAIN BANDS. EXTREME WESTERN WILSON
COUNTY HAS RECEIVED THE MOST RAINFALL OVERNIGHT...ESTIMATED AT 8 TO
10 INCHES. THE MCV WILL DRIFT SLOWLY ENE THIS MORNING AND WILL PRODUCE
COPIOUS AMOUNTS OF RAINFALL. THE BLENDED TOTAL PRECIP WATER GRAPHIC
IS DEPICTING PWS GREATER THAN 2 INCHES ACROSS OUR CWFA. THIS IS
AROUND 150 PERCENT ABOVE NORMAL. THUS THE HEAVY RAIN EVENT IS
EXPECTED TO CONTINUE TODAY AND WE WILL NOT CHANGE THE CONFIGURATION
OF THE FLASH FLOOD WATCH. EVEN THOUGH THE MCV WILL TRACK ENE THIS
MORNING...THE PARENT UPPER LEVEL LOW WILL LINGER ACROSS OUR REGION
TODAY INTO THIS EVENING. THE CONVECTION WILL EXPAND IN AREAL
COVERAGE THIS AFTERNOON WITH THE ADVENT OF DAYTIME HEATING. RAIN
CHANCES WILL LINGER INTO THURSDAY ACROSS THE EASTERN HALF OF OUR
CWFA AS THE UPPER LEVEL LOW SLOWLY LIFTS OUT TO THE NORTHEAST
TOWARDS THE ARKLATEX.

THE SUBTROPICAL RIDGE WILL BEGIN TO BUILD ACROSS THE EASTERN GULF
AND WILL EXTEND WESTWARD INTO SOUTH CENTRAL TEXAS OVER THE WEEKEND.
THIS UPPER LEVEL PATTERN WILL LIMIT RAIN CHANCES TO OUR EASTERN
COUNTIES...ASSOCIATED WITH THE SEA-BREEZE. AFTERNOON TEMPS WILL BE
BACK INTO THE LOWER TO MID 90S OVER THE WEEKEND AND THESE ABOVE
NORMAL TEMPERATURES WILL CONTINUE INTO THE MIDDLE OF NEXT WEEK.

FCST A BLEND OF THE GFS AND ECMWF.

&&

.PRELIMINARY POINT TEMPS/POPS...
AUSTIN CAMP MABRY              85  77  90  77  94 /  70  50  30  10  10
AUSTIN BERGSTROM INTL AIRPORT  84  75  90  75  93 /  80  50  30  10  10
NEW BRAUNFELS MUNI AIRPORT     86  76  91  76  93 /  70  40  20  10  10
BURNET MUNI AIRPORT            84  74  90  75  92 /  70  50  30  10  10
DEL RIO INTL AIRPORT           93  77  95  75  94 /  10  10  -   10  10
GEORGETOWN MUNI AIRPORT        84  76  90  76  92 /  70  50  30  10  10
HONDO MUNI AIRPORT             88  75  93  75  93 /  50  20  10  10  10
SAN MARCOS MUNI AIRPORT        85  76  91  76  93 /  70  40  30  10  10
LA GRANGE - FAYETTE REGIONAL   84  77  89  77  92 /  80  30  40  10  20
SAN ANTONIO INTL AIRPORT       87  77  91  77  93 /  60  30  20  10  10
STINSON MUNI AIRPORT           87  77  92  77  93 /  50  30  20  10  10

&&

.EWX WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH UNTIL 6 PM CDT THIS EVENING FOR THE FOLLOWING
COUNTIES: ATASCOSA...BASTROP...BEXAR...BLANCO...BURNET...CALDWELL...
COMAL...DE WITT...FAYETTE...GONZALES...GUADALUPE...HAYS...KARNES...
KENDALL...LAVACA...LEE...TRAVIS...WILLIAMSON...WILSON.

&&

13/02

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
642 AM CDT WED JUN 9 2010

TXZ172-173-189>194-205>209-220>225-101145-
BURNET-WILLIAMSON-KENDALL-BLANCO-HAYS-TRAVIS-BASTROP-LEE-BEXAR-
COMAL-GUADALUPE-CALDWELL-FAYETTE-ATASCOSA-WILSON-KARNES-GONZALES-
DE WITT-LAVACA-
642 AM CDT WED JUN 9 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

.DAY ONE...TODAY AND TONIGHT...
A MOIST AND UNSTABLE AIRMASS WILL GENERATE CONTINUED SHOWERS AND
THUNDERSTORMS THROUGH THE DAY. SOME OF THESE STORMS WILL BE HEAVY
WITH FLASH FLOODING THE GREATEST THREAT. THE FLASH FLOOD WATCH
AREA IS GENERALLY SOUTH AND EAST OF A LINE FROM CHARLOTTE IN
SOUTHWEST ATASCOSA COUNTY TO BOERNE TO BURNET. RAINFALL TOTALS
WILL GENERALLY RANGE FROM 2 TO 4 INCHES WITH ISOLATED 5 TO 8 INCH
AMOUNTS POSSIBLE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...
NO HAZARDOUS WEATHER IS EXPECTED.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED.

TXZ171-183>188-202>204-217>219-228-101145-
LLANO-VAL VERDE-EDWARDS-REAL-KERR-BANDERA-GILLESPIE-KINNEY-UVALDE-
MEDINA-MAVERICK-ZAVALA-FRIO-DIMMIT-
642 AM CDT WED JUN 9 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

.DAY ONE...TODAY AND TONIGHT...
ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS CAN BE EXPECTED
TODAY.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...
NO HAZARDOUS WEATHER IS EXPECTED.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
648 AM CDT WED JUN 09 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0644 AM     HEAVY RAIN       GEORGETOWN              30.65N  97.69W
06/09/2010  M3.00 INCH       WILLIAMSON         TX   EMERGENCY MNGR

            2.8 INCHES OF RAINFALL OVERNIGHT ENDING AT 630 AM THIS
            MORNING.

&&

EVENT NUMBER EWX1000388

JME

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
710 AM CDT WED JUN 9 2010

TXZ173-189>194-205>209-220>225-091415-
WILLIAMSON-KENDALL-BLANCO-HAYS-TRAVIS-BASTROP-LEE-BEXAR-COMAL-
GUADALUPE-CALDWELL-FAYETTE-ATASCOSA-WILSON-KARNES-GONZALES-
DE WITT-LAVACA-
INCLUDING THE CITIES OF...GEORGETOWN...BOERNE...BLANCO...
SAN MARCOS...AUSTIN...BASTROP...GIDDINGS...SAN ANTONIO...
NEW BRAUNFELS...SEGUIN...LOCKHART...LA GRANGE...PLEASANTON...
FLORESVILLE...KARNES CITY...GONZALES...CUERO...HALLETTSVILLE
710 AM CDT WED JUN 9 2010

...RAINFALL AMOUNTS ACROSS COMAL COUNTY...

LISTED ARE 24 HOUR RAINFALL TOTALS COURTESY OF THE GBRA
ENDING AT 7 AM.

GBRA TOWER...3.05
STARTZVILLE...6.68
HOFFMAN ROAD...3.25
THIRD CROSSING...6.83
WAGGNER RANCH...6.15
STENEN ROAD...2.31
BEAR CREEK...10.28
SHADOW HILLS...8.29
NBU TOWER ON GERONIMO CREEK...1.34
FM 3009 ON DRY COMAL CREEK...2.78
KRUGER CANYON ROAD ON DRY COMAL CREEK...5.15
BRESKY ROAD ON ISSAC CREEK...4.47

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
713 AM CDT WED JUN 09 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0658 AM     HEAVY RAIN       10 NNW AUSTIN           30.40N  97.80W
06/09/2010  M2.54 INCH       TRAVIS             TX   CO-OP OBSERVER

            2.54 INCHES OF RAINFALL FOR 6 HOUR PERIOD BETWEEN
            MIDNIGHT AND 6AM FROM AUSTIN GREAT HILLS NWS CO-OP
            OBSERVER

&&

EVENT NUMBER EWX1000389

ATT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
737 AM CDT WED JUN 09 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0734 AM     FLASH FLOOD      5 W NEW BRAUNFELS       29.70N  98.20W
06/09/2010                   COMAL              TX   NWS EMPLOYEE

            4 INCHES OF RAIN IN THE LAST 6 HOURS. LOW WATER
            CROSSINGS ON FM 1863 ARE FLOODED. STAFF GAUGE ON THE DRY
            COMAL CREEK IS AT 5 FT.

&&

EVENT NUMBER EWX1000390

JME

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