Flash Flood Warning 74, NWS Austin/San Antonio, TX

000 
WGUS74 KEWX 130023
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
722 PM CDT TUE SEP 12 2006

TXC491-130115-
WILLIAMSON TX-
722 PM CDT TUE SEP 12 2006

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR
WILLIAMSON COUNTY...

AT 718 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A THUNDERSTORM PRODUCING HEAVY RAINFALL OVER THE WARNED 
AREA. THE HEAVIEST RAINFALL WILL MOVE OUT OF WILLIAMSON COUNTY BY 
745 PM CDT...BUT WATER WILL CONTINUE TO DRAIN FOR SEVERAL MORE HOURS.

LOCATIONS IN THE WARNING INCLUDE WEIR...LIBERTY HILL...GRANGER DAM 
AND GRANGER.

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

IT IS HARD TO RECOGNIZE THE DANGERS OF FLOODING AT NIGHT. IF FLOOD
WATERS RISE ACT QUICKLY. DO NOT STAY IN FLOOD PRONE AREAS.

LAT...LON 3069 9761 3057 9779 3050 9749 3048 9719
      3074 9730

$$

000 
WGUS74 KEWX 130117
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
816 PM CDT TUE SEP 12 2006

TXC491-130126-
WILLIAMSON TX-
816 PM CDT TUE SEP 12 2006

...THE FLASH FLOOD WARNING HAS EXPIRED FOR WILLIAMSON COUNTY...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE RAINFALL HAS 
DECREASED ACROSS EASTERN WILLIAMSON COUNTY AND WILL MOVE OUT OF THE 
AREA BY 9 PM CDT. SOME ADDITIONAL DRAINAGE OF WATER MAY OCCUR FOR 
ANOTHER FEW HOURS.

LAT...LON 3069 9761 3057 9779 3050 9749 3048 9719
      3074 9730

$$

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
620 PM CDT TUE SEP 12 2006

.AVIATION...
WEAK COLD FRONT WILL CONTINUE TO MOVE SLOWLY SOUTH OVERNIGHT.
SCATTERED SHRA/TSRA ARE EXPECTED ACROSS THE AREA THIS EVENING THEN
DECREASING BY 05Z. MVFR CIGS ARE EXPECTED THIS EVENING...EXCEPT
IFR IN THE STRONGER SHRA/TSRA. MVFR CIGS EXPECTED AT KDRT FROM 10Z
TO 18Z THEN VFR ACROSS THE FCST AREA. S/SE WINDS NEAR 10KTS
SHIFTING TO THE NORTH NEAR 10 KTS. GUSTY WINDS TO 35 KTS POSSIBLE
IN OR NEAR SHRA/TSRA THIS EVENING.

&&

.PREV DISCUSSION... (ISSUED 259 PM CDT TUE SEP 12 2006)

DISCUSSION...
SHOWERS/THUNDERSTORMS DEVELOPING WITH HEATING AND THE INCOMING COLD
FRONT OVER THE HILL COUNTRY AND SOUTH CENTRAL TX.  THIS CONVECTION
TO CONTINUE TO INCREASE IN COVERAGE OVER THE NEXT FEW HOURS THEN SLOWLY
DISSIPATE LATER THIS EVENING WITH THE LOSS OF HEATING. THE CONVECTION
TO THE SOUTH ASSOCIATED WITH HEATING AND THE VORT MAX IN NE MEXICO
WILL CONTINUE LONGER INTO THE OVERNIGHT HOURS AS THE COLD FRONT
PUSHES SOUTHWARD. WILL CONTINUE TO MENTION LOCALLY HEAVY RAINS ACROSS
THE S CENTRAL-SOUTHERN CWA WHERE SHOWERS WILL BE LONGER LIVED WITH
THE LOW LEVEL CONVERGENCE AND SLOW MOVEMENT.

CONVECTION TO SHIFT SOUTH OF THE CWA WEDNESDAY WITH A FEW SHOWERS
POSSIBLE OVER THE RIO GRANDE PLAINS IN THE SOUTHWEST WHERE DEEPER
MOISTURE WILL REMAIN. A S/W RIDGE TO BRIEFLY BUILD INTO TX LATE
WEDNESDAY INTO THURSDAY WITH A BRIEF PERIOD OF BENIGN NEAR NORMAL
WEATHER...BEFORE THE RIDGE MOVES OFF TO THE EAST BY THURSDAY
EVENING. A MODERATE RETURN FLOW SETS UP BY THURSDAY NIGHT/FRIDAY
AS A BROAD TROF DEVELOPS OVER THE WESTERN CONUS. THIS MOIST SLY
FLOW OFF THE GULF WILL PREVAIL OVER THE WEEKEND AS THE BROAD UPPER
TROF TRACKS EASTWARD. THEREFORE EXPECT ISOLATED TO WIDELY
SCATTERED MORNING STREAMER SHOWERS OFF THE GULF OVER THE SOUTHEAST
COUNTIES AND SLIGHT CHANCES OF SHOWERS FROM HEATING OVER MUCH OF
THE REST OF CWA EACH DAY. BY SUNDAY AFTERNOON/EVENING THE UPPER
TROF CONTINUES EASTWARD DRIVING A COLD FRONT THRU SOUTH TEXAS
SUNDAY NIGHT. WITH THE DEEP MOISTURE IN PLACE SHOULD SEE A GOOD
CHANCE POPS WITH THE FRONT SUNDAY NIGHT AND EARLY MONDAY. AGAIN
THE MOISTURE WILL LINGER OVER THE SOUTHERN COUNTIES AND WITH THE
FRONTAL BOUNDARY HANGING JUST TO THE SOUTH WILL KEEP MENTION OF
RAIN IN THRU THE EARLY PART OF NEXT WEEK.

&&

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

02/10

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
513 AM CDT TUE SEP 12 2006

TXZ171>173-183>194-202>209-217>225-228-131000-
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-
513 AM CDT TUE SEP 12 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

.DAY ONE...TODAY AND TONIGHT
SCATTERED TO WIDESPREAD SHOWERS AND THUNDERSTORMS ARE EXPECTED
TODAY. THE MAIN THREAT WILL BE LOCALLY HEAVY RAINFALL...ESPECIALLY
ACROSS SOUTHERN AREAS. THIS MAY CAUSE ISOLATED FLASH FLOODING IN
SPOTS. GUSTY WINDS ARE ALSO POSSIBLE. RAIN CHANCES WILL DECREASE
FROM NORTH TO SOUTH DURING THE OVERNIGHT HOURS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
THERE IS A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS THURSDAY
NIGHT THROUGH MONDAY. HOWEVER...NO HAZARDOUS WEATHER IS EXPECTED
AT THIS TIME.

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