Flash Flood Warning 30, NWS Austin/San Antonio, TX

000 
WGUS74 KEWX 102051
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
351 PM CDT THU SEP 10 2009

TXC019-029-031-053-055-091-171-187-209-259-265-299-325-453-491-493-
102215-
/O.CON.KEWX.FF.W.0030.000000T0000Z-090910T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BURNET TX-LLANO TX-WILLIAMSON TX-TRAVIS TX-GILLESPIE TX-BLANCO TX-
HAYS TX-KERR TX-KENDALL TX-CALDWELL TX-COMAL TX-BANDERA TX-
GUADALUPE TX-BEXAR TX-MEDINA TX-WILSON TX-
351 PM CDT THU SEP 10 2009

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR
EXTREME NORTH CENTRAL WILSON...EXTREME NORTHEASTERN MEDINA...NORTHERN
BEXAR...GUADALUPE...EXTREME EAST CENTRAL BANDERA...COMAL...
NORTHWESTERN CALDWELL...KENDALL...EASTERN KERR...HAYS...BLANCO...
GILLESPIE...TRAVIS...SOUTH CENTRAL WILLIAMSON...EXTREME SOUTHERN
LLANO AND EXTREME SOUTH CENTRAL BURNET COUNTIES...

AT 336 PM CDT...NATIONAL WEATHER SERVICE RADARS CONTINUE TO INDICATE 
A LARGE AREA OF MODERATE TO HEAVY RAIN FROM NEAR SEGUIN NORTH AND 
NORTHWEST TO INCLUDE CENTRAL AND EASTERN PORTIONS OF THE HILL 
COUNTRY. THIS AREA WAS MOVING NORTHWARD AT 5 TO 10 MPH BUT 
DECREASING IN INTENSITY. EARLIER THIS MORNING AND EARLY THIS 
AFTERNOON..RAINFALL TOTALS OF UP TO 5 INCHES HAD BEEN REPORTED IN 
THE NEW BRAUNFELS AREA. A FEW ROAD CLOSURES HAVE BEEN REPORTED IN 
NEW BRAUNFELS AS WELL. IN ADDITION..3 INCHES OF RAIN HAS ALSO BEEN 
MEASURED FROM A RAIN GAGE IN FREDERICKSBURG OVER THE LAST 2 HOURS. 

LOCATIONS IN THE WARNING AREA INCLUDE BLOWOUT...SANDY...ROCKY
CREEK...HYE...ALBERT...BLUMENTHAL...STONEWALL...GRAPETOWN...CAIN
CITY...ROCKY HILL...TIVYDALE...ECKERT...CRABAPPLE...HILLTOP...CHERRY
SPRING...DOSS...WINDEMERE...WILLOW CITY...WEST LAKE HILLS...
TANGLEWOOD FOREST...SPICEWOOD...ROUND MOUNTAIN...ROLLINGWOOD...
PFLUGERVILLE...PEDERNALES FALLS STATE PARK...MANSFIELD DAM...MANOR...
LUCKENBACH...LBJ STATE PARK...LAKEWAY...LAGO VISTA...JOHNSON CITY...
HENLY...HARPER...FREDERICKSBURG...ENCHANTED ROCK STATE PARK...
DRIPPING SPRINGS...CYPRESS MILL...BERGSTROM...BEE CAVE...AUSTIN AND
ANDERSON MILL.

WHEN WATER COVERS THE ROAD...TURN AROUND DONT DROWN. THE LIFE YOU 
SAVE MAY BE YOUR OWN.

&&

LAT...LON 3048 9742 2980 9787 2955 9775 2932 9847
      3029 9939 3030 9932 3050 9932 3051 9930
      3052 9898

$$

000 
WGUS74 KEWX 102212
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
512 PM CDT THU SEP 10 2009

TXC019-029-031-053-055-091-171-187-209-259-265-299-325-453-491-493-
102218-
/O.EXP.KEWX.FF.W.0030.000000T0000Z-090910T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BURNET TX-LLANO TX-WILLIAMSON TX-TRAVIS TX-GILLESPIE TX-BLANCO TX-
HAYS TX-KERR TX-KENDALL TX-CALDWELL TX-COMAL TX-BANDERA TX-
GUADALUPE TX-BEXAR TX-MEDINA TX-WILSON TX-
512 PM CDT THU SEP 10 2009

...THE FLASH FLOOD WARNING WILL EXPIRE AT 515 PM CDT FOR EXTREME
NORTH CENTRAL WILSON...EXTREME NORTHEASTERN MEDINA...NORTHERN
BEXAR...GUADALUPE...EXTREME EAST CENTRAL BANDERA...COMAL...
NORTHWESTERN CALDWELL...KENDALL...EASTERN KERR...HAYS...BLANCO...
GILLESPIE...TRAVIS...SOUTH CENTRAL WILLIAMSON...EXTREME SOUTHERN
LLANO AND EXTREME SOUTH CENTRAL BURNET COUNTIES...

AT 508 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED AREAS OF 
LIGHT TO OCCASIONALLY MODERATE RAIN CONTINUING OVER THE PREVIOUSLY 
WARNED AREA. ONLY MINOR ADDITIONAL RUNOFF IS EXPECTED FROM THIS 
RAIN. WATER WILL CONTINUE TO POND ON ROADS AND IN OTHER LOW LYING 
AREAS THROUGH THE EVENING HOURS. MOTORISTS SHOULD EXERCISE CAUTION. 
TURN AROUND DONT DROWN

LAT...LON 3048 9742 2980 9787 2955 9775 2932 9847
      3029 9939 3030 9932 3050 9932 3051 9930
      3052 9898

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
118 PM CDT THU SEP 10 2009

.AVIATION..SCATTERED TO NUMEROUS AFTERNOON AND EARLY EVENING SHOWERS
AND ISOLATED THUNDERSTORMS WILL CONTINUE TO LOWER CIGS TO
MVFR/MARGINAL VFR..VSBYS LOWER AT OR BELOW 3 MILES IN SHOWERS AND
STORMS. ACTIVITY WILL DIMINISH BY MID EVENING WITH BRIEF VFR
CONDITIONS..THEN AROUND MIDNIGHT MVFR CIGS WILL REDEVELOP WITH
OVERNIGHT SCATTERED LIGHT SHOWERS DEVELOPING ESPECIALLY ALONG THE
I-35 CORRIDOR. THESE SHOWERS WILL CONTINUE DEVELOPING THROUGH THE
MORNING HOURS FRIDAY WITH MVFR AND OCNL IFR CIGS AND VSBYS.

&&

.PREV DISCUSSION... /ISSUED 1049 AM CDT THU SEP 10 2009/

DISCUSSION...
A MOIST AIRMASS WITH PWS OF 1.9 TO 2.4 INCHES CONTINUES AROUND A
MID TO UPPER LOW CENTERED OVER THE WESTERN PARTS OF SOUTH CENTRAL
TEXAS BETWEEN UVALDE AND DEL RIO. CURRENTLY BANDS OF RAIN WITH A
FEW THUNDERSTORMS ARE FEEDING INTO THE LOW FROM THE CENTRAL HILL
COUNTRY TO FAR SOUTH TEXAS AND THE COASTAL BEND. CURRENT FORECAST
HAS THE SITUATION IN HAND AND WILL ONLY ADJUST THE TEMPERATURE AND
WIND TRENDS THROUGH THIS AFTERNOON.

PREV DISCUSSION... /ISSUED 636 AM CDT THU SEP 10 2009/

AVIATION...
MVFR CIGS WILL GENERALLY PREVAIL THIS MORNING. SCATTERED SHRA WITH
ISOLATED TSRA CAN BE EXPECTED THROUGH THE MORNING HOURS. CEILINGS WILL
BE SLOW TO IMPROVE BECAUSE OF THE SHRA/TSRA BUILDING ACROSS THE
REGION...BUT VFR CIGS SHOULD PREVAIL BY 16Z. SHOWERS AND THUNDERSTORMS
WILL INCREASE IN AREAL COVERAGE THROUGHOUT THE DAY. ANY REDUCTION
TO VSBYS/CIGS DURING THE AFTERNOON AND EVENING HOURS WILL BE DUE
TO SHRA/TSRA. CONVECTIVE ACTIVITY WILL GENERALLY WANE WITH THE
LOSS OF DAYTIME HEATING...BUT AREAS OF SHOWERS CAN STILL BE
EXPECTED DURING THE OVERNIGHT HOURS. SFC WINDS WILL GENERALLY BE
SELY 5 TO 10 KTS THROUGH THE TAF PERIOD WITH GUSTS IN AND AROUND
THUNDERSTORMS.

PREV DISCUSSION... /ISSUED 546 AM CDT THU SEP 10 2009/

DISCUSSION...
ADJUSTED FORECASTS PER 06Z TO 10Z TRENDS AND INPUT FROM 06Z
SOLUTIONS AND ENSEMBLE MEAN FORECASTS. SEPTEMBER WEATHER PATTERN
THAT SUPPORTS A GOOD CHANCE OF RAIN WILL CONTINUE THROUGH
SATURDAY. THE 700 TO 300 HPA LOW/TROF HAS FORMED OVER SOUTH
CENTRAL TEXAS AND IS EXPECTED TO DRIFT SLOWLY EAST THROUGH FRIDAY.
FURTHER NORTH...ANOTHER WAVE OF S/W ENERGY AND AN ASSOCIATED COOL
FRONT WILL MOVE INTO THE AREA ON FRIDAY THROUGH FRIDAY
NIGHT...MAINTAINING THE 700 TO 300 HPA TROF OVER SOUTH CENTRAL
TEXAS THROUGH SATURDAY. BY LATE SATURDAY...ANOTHER WAVE OF S/W
ENERGY IS FORECAST TO APPROACH FROM THE NORTHWEST AND BEGIN TO
MOVE THE 700 TO 300 HPA TROF TO THE EAST. THIS PROCESS WILL BE
RELATIVELY SLOW AT FIRST AND THEN SPEED UP ON SUNDAY AS MORE
PROGRESSIVE WESTERLIES TO THE NORTH AND WEST BEGIN TO CARRY THIS
RAIN MAKING SYSTEM EAST. THIS WILL ALSO BRING ANOTHER WAVE OF COOL
AIR ACROSS SOUTH CENTRAL TEXAS SATURDAY THROUGH SUNDAY...IN A
SIMILAR PATTERN TO THE WEEKEND OF AUGUST 29TH AND 30TH. THE
CURRENT PATTERN OF WEATHER SYSTEMS COMING FROM THE NORTH AND
BRINGING RAIN IS ALSO PART OF A TREND THAT WAS IN PROGRESS THIS
PAST SPRING. THESE PATTERNS SHOWN BY FORECAST SOLUTIONS THE PAST
FEW DAYS THROUGH EARLY THIS MORNING SHOW A CONTINUED GOOD CHANCE
OF RAIN TODAY THROUGH SATURDAY. LOCALLY HEAVY RAIN WILL BE
POSSIBLE AND WILL SHOW A SPECIAL WEATHER STATEMENT TO HIGHLIGHT
THE WET SEVERAL DAYS AHEAD.

ON SUNDAY...THE PROCESS OF DECREASING POPS FROM THE WEST SHOWS UP
IN A TREND THAT WILL CONTINUE THROUGH MONDAY.  LEFT MENTION OF
SHOWERS IN THE FORECAST ON SUNDAY...AS THE FINAL WAVE OF INSTABILITY
MOVES ACROSS SOUTH CENTRAL TEXAS...THEN DECREASED POPS MARKEDLY
FROM THE NORTHWEST SUNDAY NIGHT. BY MONDAY...THE BEST AREA OF LIFT
FOR SHOWERS SHOWS OVER THE EASTERN TO SOUTHEAST TO EXTREME SOUTH
PART OF SOUTH CENTRAL TEXAS...MAINLY ALONG AND EAST OF A GIDDINGS
TO PLEASANTON TO CARRIZO SPRINGS...WHERE A SLIGHT CHANCE OF
SHOWERS WAS INDICATED. FURTHER NORTH AND WEST...MOSTLY SUNNY TO
PARTLY CLOUDY CONDITIONS ARE EXPECTED MONDAY. THE DRIER WEATHER
TREND IS EXPECTED TO SPREAD IN MORE FROM THE WEST AND NORTHWEST
TUESDAY...WITH MOSTLY SUNNY TO PARTLY CLOUDY CONDITIONS. LEFT
ISOLATED SHOWERS TUESDAY OVER THE EXTREME SOUTHEAST PART OF THE
AREA. FOR TUESDAY NIGHT THROUGH WEDNESDAY AND WEDNESDAY
NIGHT...DRY WEATHER TREND SHOWS WITH WARM DAYS AND COOL TO MILD AT
NIGHT. ON THURSDAY OF NEXT WEEK...ANOTHER WEATHER SYSTEM
APPROACHES FROM THE NORTHWEST...THAT COULD BRING A CHANCE OF
SHOWERS TO SOUTH CENTRAL TEXAS LATE NEXT WEEK.

&&

.PRELIMINARY POINT TEMPS/POPS...
AUSTIN CAMP MABRY              88  72  86  72  85 /  80  50  70  70  70
AUSTIN BERGSTROM INTL AIRPORT  88  70  86  72  85 /  80  60  70  70  70
NEW BRAUNFELS MUNI AIRPORT     87  71  86  71  86 /  80  60  70  70  70
BURNET MUNI AIRPORT            85  71  84  69  82 /  70  50  60  60  70
DEL RIO INTL AIRPORT           86  71  88  72  87 /  80  60  70  70  70
GEORGETOWN MUNI AIRPORT        88  72  86  71  85 /  70  40  60  60  70
HONDO MUNI AIRPORT             86  71  86  70  86 /  80  60  70  70  70
SAN MARCOS MUNI AIRPORT        87  71  86  71  85 /  80  60  70  70  70
LA GRANGE - FAYETTE REGIONAL   88  72  87  72  86 /  80  50  70  70  70
SAN ANTONIO INTL AIRPORT       86  73  86  72  86 /  80  60  70  70  70
STINSON MUNI AIRPORT           86  73  86  72  86 /  80  60  70  70  70

&&

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

04/99

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
514 AM CDT THU SEP 10 2009

TXZ171>173-183>194-202>209-217>225-228-111015-
LLANO-BURNET-WILLIAMSON-VAL VERDE-EDWARDS-REAL-KERR-BANDERA-
GILLESPIE-KENDALL-BLANCO-HAYS-TRAVIS-BASTROP-LEE-KINNEY-UVALDE-
MEDINA-BEXAR-COMAL-GUADALUPE-CALDWELL-FAYETTE-MAVERICK-ZAVALA-
FRIO-ATASCOSA-WILSON-KARNES-GONZALES-DE WITT-LAVACA-DIMMIT-
514 AM CDT THU SEP 10 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

.DAY ONE...TODAY AND TONIGHT...

ABUNDANT MOISTURE THROUGHOUT THE ATMOSPHERE AND AN UNSTABLE
WEATHER PATTERN WILL CONTINUE THE GOOD CHANCES FOR RAIN ACROSS
SOUTH CENTRAL TEXAS AND THE HILL COUNTRY TODAY. AVERAGE RAINFALL
TOTALS OF ONE HALF TO ONE INCH ARE GENERALLY EXPECTED.
HOWEVER...LOCALLY HEAVY RAINFALL IS POSSIBLE WITH ISOLATED TOTALS
OF AS MUCH AS THREE TO FOUR INCHES THROUGHOUT THE DAY. THIS WILL
LEAD TO A CHANCE FOR ISOLATED MINOR FLOODING OF STREETS AND
INTERSECTIONS ACROSS URBAN AREAS AS WELL AS OTHER FLOOD PRONE
AREAS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

GOOD CHANCES FOR RAIN WILL REMAIN IN THE FORECAST THROUGH THE
WEEKEND AS A COLD FRONT APPROACHES THE REGION. THIS COULD RESULT
IN MORE WIDESPREAD HEAVY RAINFALL ON FRIDAY AND SATURDAY WHICH MAY
LEAD TO MINOR FLOODING OF URBAN AREAS AS WELL AS LOCATIONS WHICH
ARE STILL WET FROM PREVIOUS RAINFALL. RAIN CHANCES WILL DECREASE
ON SUNDAY AS THE ATMOSPHERE BEGINS TO STABILIZE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BECOME NECSSARY THROUGH THE WEEKEND.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
158 PM CDT THU SEP 10 2009

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

0143 PM     HEAVY RAIN       3 WSW NEW BRAUNFELS     29.68N  98.16W
09/10/2009  M4.95 INCH       COMAL              TX   COCORAHS

            2.5 HR RAINFALL

&&

EVENT NUMBER EWX0900054

JPB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
207 PM CDT THU SEP 10 2009

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

0148 PM     FLASH FLOOD      3 ENE BULVERDE          29.75N  98.41W
09/10/2009                   BEXAR              TX   NWS EMPLOYEE

            BULVERDE RD CLOSED AT CIBOLO RIVER CROSSING

&&

EVENT NUMBER EWX0900055

JPB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
209 PM CDT THU SEP 10 2009

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

0200 PM     HEAVY RAIN       3 WNW NEW BRAUNFELS     29.71N  98.17W
09/10/2009  E5.00 INCH       COMAL              TX   PUBLIC

            2 HR RAINFALL

&&

EVENT NUMBER EWX0900056

JPB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
212 PM CDT THU SEP 10 2009

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

0211 PM     FLASH FLOOD      NEW BRAUNFELS           29.70N  98.12W
09/10/2009                   COMAL              TX   NWS EMPLOYEE

            NUMEROUS ROADS CLOSED IN AND AROUND NEW BRAUNFELS
            CLOSED OR WITH WATER RUNNING OVER THEM.

&&

EVENT NUMBER EWX0900057

JPB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
218 PM CDT THU SEP 10 2009

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

0216 PM     FLASH FLOOD      NEW BRAUNFELS           29.70N  98.12W
09/10/2009                   COMAL              TX   EMERGENCY MNGR

            LANDA ST CLOSED FROM MISSION TO WALNUT. S. BUS I35 FROM
            SEGUIN ST TO OLD MCQUEENEY RD.

&&

EVENT NUMBER EWX0900058

JPB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
220 PM CDT THU SEP 10 2009

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

0210 PM     HEAVY RAIN       3 WNW NEW BRAUNFELS     29.72N  98.17W
09/10/2009  M5.13 INCH       COMAL              TX   COCORAHS

            5.11 IN FROM 11...58 AM-2...10 PM

&&

EVENT NUMBER EWX0900059

JPB