Flash Flood Warning 172, NWS Austin/San Antonio, TX

000 
WGUS74 KEWX 270856
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
348 AM CDT SUN MAY 27 2007

TXC019-029-325-271115-
BANDERA TX-BEXAR TX-MEDINA TX-
348 AM CDT SUN MAY 27 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 AM CDT FOR
MEDINA...BEXAR AND BANDERA COUNTIES...

AT 346 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO 
DETECT THUNDERSTORMS PRODUCING FLASH FLOODING OVER BANDERA...BEXAR 
AND MEDINA COUNTIES. THUNDERSTORMS ALONG A MEDINA TO MEDINA LAKE TO 
LACOSTE LINE WILL MOVE NORTHEAST AT 10 MPH WHILE A THUNDERSTORM OVER 
NORTHERN SAN ANTONIO WILL MOVE NORTH AT 10 MPH. MAXIMUM RAINFALL 
AMOUNTS WERE GENERALLY IN THE 1 TO 2 INCH RANGE...HOWEVER A SMALL 
AREA WITH AMOUNTS APPROACHING 4 INCHES WAS NOTED BETWEEN CASTROVILLE 
AND MEDINA LAKE ALONG THE MEDINA RIVER. SOME RISE IN THE MEDINA 
RIVER CAN BE EXPECTED DOWNSTREAM OF MEDINA LAKE TO LACOSTE.     

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO VANDERPOOL
AND MEDINA

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 2913 9935 2912 9891 2926 9880 2947 9836
      2959 9837 2970 9843 2971 9879 2987 9918
      2989 9958 2968 9959 2964 9940

$$

000 
WGUS74 KEWX 270929
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
429 AM CDT SUN MAY 27 2007

TXC019-029-325-271115-
BANDERA TX-BEXAR TX-MEDINA TX-
429 AM CDT SUN MAY 27 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 AM CDT FOR
MEDINA...BEXAR AND BANDERA COUNTIES...

AT 425 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO 
DETECT THUNDERSTORMS PRODUCING FLASH FLOODING OVER BEXAR...BANDERA 
AND MEDINA COUNTIES. THUNDERSTORMS PRODUCING VERY HEAVY RAINS WERE 
NOTED OVER NORTHERN BEXAR COUNTY FROM NORTHWEST SAN ANTONIO TO FAIR 
OAKS RANCH. RAINFALL RATES 1 TO NEAR 3 INCHES PER HOUR WERE NOTED. 
ELSEWHERE...LIGHT TO MODERATE RAINS CONTINUED WITH RAINFALL RATES OF 
LESS THAN ONE HALF INCH PER HOUR.  

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO VANDERPOOL...
THE DOMINION...TARPLEY...SHAVANO PARK...PIPE CREEK...MEDINA...LEON
SPRINGS...LAKEHILLS...HOLLYWOOD PARK...HILL COUNTRY VILLAGE...
HELOTES...CROSS MOUNTAIN AND BANDERA

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 2913 9935 2912 9891 2926 9880 2947 9836
      2959 9837 2970 9843 2971 9879 2987 9918
      2989 9958 2968 9959 2964 9940

$$

000 
WGUS74 KEWX 271017
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
514 AM CDT SUN MAY 27 2007

TXC019-029-325-271115-
BANDERA TX-BEXAR TX-MEDINA TX-
514 AM CDT SUN MAY 27 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 AM CDT FOR
MEDINA...BEXAR AND BANDERA COUNTIES...

AT 509 AM CDT...NATIONAL WEATHER SERVICE RADAR SHOWED LIGHT TO 
MODERATE RAINS ACROSS BANDERA...BEXAR AND MEDINA COUNTIES. RAINFALL 
RATES WERE LESS THAN ONE HALF INCH PER HOUR. SOME STREAMS WILL 
CONTINUE TO RUN HIGH DURING THE NEXT HOUR DUE TO EARLIER HEAVY RAINS 
OF UP TO 4 INCHES. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO VANDERPOOL...
THE DOMINION...TARPLEY...SHAVANO PARK...PIPE CREEK...MEDINA...LEON
SPRINGS...LAKEHILLS...HOLLYWOOD PARK...HILL COUNTRY VILLAGE...
HELOTES...CROSS MOUNTAIN AND BANDERA

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 2913 9935 2912 9891 2926 9880 2947 9836
      2959 9837 2970 9843 2971 9879 2987 9918
      2989 9958 2968 9959 2964 9940

$$

000 
WGUS74 KEWX 271120
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
618 AM CDT SUN MAY 27 2007

TXC019-029-325-271128-
BANDERA TX-BEXAR TX-MEDINA TX-
618 AM CDT SUN MAY 27 2007

...THE FLASH FLOOD WARNING HAS EXPIRED FOR MEDINA...BEXAR AND BANDERA
COUNTIES...

AT 615 AM CDT NATIONAL WEATHER SERVICE RADAR SHOWED LIGHT TO   
MODERATE RAINS ACROSS THE AREA. RAINFALL RATES WERE GENERALLY LESS 
THAN ONE HALF INCH PER HOUR. THE THREAT FOR ADDITIONAL FLASH 
FLOODING HAS ENDED. HOWEVER...SOME MINOR RISES ALONG SMALL STREAMS 
AND PONDING OF WATER IN LOW LYING AREAS CAN BE EXPECTED DURING THE 
NEXT COUPLE OF HOURS. AS A RESULT...THE FLASH FLOOD WARNING WAS 
ALLOWED TO EXPIRE AND WAS REPLACED BY AN URBAN AND SMALL STREAM 
FLOOD ADVISORY. 


LAT...LON 2913 9935 2912 9891 2926 9880 2947 9836
      2959 9837 2970 9843 2971 9879 2987 9918
      2989 9958 2968 9959 2964 9940

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1253 AM CDT SUN MAY 27 2007

.AVIATION...
AREAS OF IFR CIGS WILL PERSIST THROUGH MID MORNING, THEN LIFT TO
MVFR BY NOON WITH SOME VFR IN THE AFTERNOON. SCATTERED TO NUMEROUS
SHRA/TSRA WILL CONTINUE AHEAD OF AN UPPER LOW. SELY WINDS WILL
PREVAIL AROUND 10 KTS OR LESS.

&&

.PREV DISCUSSION... /ISSUED 830 PM CDT SAT MAY 26 2007/

UPDATE...
A LINE OF STORMS WAS MARCHING EAST ACROSS NORTHERN MEXICO AND
SHOULD ENTER INTO CENTRAL VAL VERDE COUNTY DURING THE NEXT HOUR
AND SOUTHERN PORTIONS BY 11 PM. ANOTHER OUTFLOW BOUNDARY PUSHING
WEST WILL INTERSECT WITH THE LINE FOR POTENTIALLY SOME SORT OF
ENHANCEMENT LATER TONIGHT OVER WESTERN PORTIONS (MAINLY RIO GRANDE
PLAINS). UNOBSTRUCTED INFLOW AND HIGHER DEWPOINTS INTO THE STORMS
SHOULD MAINTAIN THEM DEEPER INTO SOUTH CENTRAL TEXAS DURING THE
LATE NIGHT HOURS. SKY..PROBABILITY AND WEATHER GRIDS WERE ALTERED
HIGHER IN LIGHT OF THIS DEVELOPMENT. NEW TEXT FORECASTS OUT SOON.

PREV DISCUSSION... /ISSUED 706 PM CDT SAT MAY 26 2007/

AVIATION...
A MOIST UNSTABLE AIRMASS AND AN UPPER LEVEL TROUGH OF LOW PRESSURE
OVER TX WILL KEEP ISOLD TO SCT SHRA/TSRA ACROSS THE AREA FOR THE
NEXT 24 HOURS. VFR CONDITIONS WILL GRADUALLY BECOME MVFR CIGS AND
VSBYS AFTER 03Z WITH AREAS OF IFR CIGS BETWEEN 08Z AND 14Z.

PREV DISCUSSION... /ISSUED 315 PM CDT SAT MAY 26 2007/

DISCUSSION...
CURRENT MESO-SCALE CONVECTIVE VORTEX IS SPAWNING NEW SLOW MOVING
SHOWERS AND THUNDERSTORMS ACROSS THE AREA. AM EXPECTING LARGE
CLUSTERS OF THUNDERSTORMS TO DEVELOP AND PERSIST THROUGH THE
NIGHT WHILE SHIFTING NORTHEAST ACROSS THE REGION. HAVE EXTENDED
THE FLASH FLOOD WATCH BEYOND 7 AM FOR THE EASTERN HALF OF THE CWA
- LLANO TO KENDALL TO ATASCOSA COUNTIES AND EASTWARD. WILL LET
THE EVENING SHIFT DECIDE IF FLASH FLOOD WATCH SHUD REMAIN FOR
WESTERN COUNTIES BEYOND 7 AM SUNDAY BASED ON DEVELOPMENTS TONIGHT.
THESE MESO-SCALE CONVECTIVE VORTICES WILL CONTINUE TO DEVELOP DAY
AFTER DAY BUT PLACEMENT IS DIFFICULT. ALSO OUTFLOW BOUNDARY
LOCATIONS HARD TO PROG. BUT ANYWAY ISOLATED TO SCATTERED SHOWERS
AND THUNDERSTORMS WITH HIGH RAINFALL WILL CONTINUE ON AND OFF
THROUGH MONDAY. THE MID AND UPPER FLOW SHIFTS TO A NORTHWEST AND
NORTH DIRECTION, LIMITING THE ATMOSPHERIC MOISTURE FOR SHOWER
PRODUCTION. HOWEVER, THE DRY LINE WILL BECOME A PLAYER IN
AFTERNOON SHOWER DEVELOPMENT WITH A FEW CELLS MOVING INTO THE
EDWARDS PLATEAU AND WESTERN HILL COUNTRY. DAYTIME TEMPS WILL
RETURN TO NORMAL LEVELS TUESDAY AND WEDNESDAY. BY WEEKS END, THE
DRY FLOW ALOFT WILL CONTINUE WITH MAX TEMPS AT OR ABOVE NORMAL.
ANOTHER COLD FRONT IS PROGGED TO MOVE INTO TEXAS, BUT DONT SEE IT
AFFECTING TEMPS DUE TO ITS SHALLOWNESS.

&&

.PRELIMINARY POINT TEMPS/POPS...
AUSTIN CAMP MABRY              66  82  67  85  69 /  40  40  40  40  20
AUSTIN BERGSTROM INTL AIRPORT  64  82  67  85  67 /  40  40  40  40  20
DEL RIO INTL AIRPORT           69  88  70  90  72 /  40  20  20  -   -
SAN ANTONIO INTL AIRPORT       67  84  68  86  69 /  40  40  30  30  10

&&

.EWX WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH THROUGH THIS EVENING FOR THE FOLLOWING ZONES:
ATASCOSA...BASTROP...BEXAR...BLANCO...BURNET...CALDWELL...COMAL...
DE WITT...FAYETTE...GILLESPIE...GONZALES...GUADALUPE...HAYS...
KARNES...KENDALL...LAVACA...LEE...LLANO...TRAVIS...WILLIAMSON...
WILSON.

FLASH FLOOD WATCH UNTIL 7 AM CDT THIS MORNING FOR THE FOLLOWING
ZONES: BANDERA...DIMMIT...EDWARDS...FRIO...KERR...KINNEY...
MAVERICK...MEDINA...REAL...UVALDE...VAL VERDE...ZAVALA.

&&

18/04

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1128 AM CDT SAT MAY 26 2007

TXZ171>173-183>194-202>209-217>225-228-271200-
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-
1128 AM CDT SAT MAY 26 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A FLASH FLOOD WATCH IS IN EFFECT. SCATTERED TO NUMEROUS SHOWERS
AND THUNDERSTORMS...SOME WITH LOCALLY HEAVY RAINS...CAN BE
EXPECTED. DUE TO SATURATED SOILS FROM RECENT RAINS...RUN OFF WILL
BE RAPID LEADING TO FLASH FLOODING. GUSTY WINDS ARE ALSO POSSIBLE
NEAR STORMS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

A FLASH FLOOD WATCH CONTINUES THROUGH SUNDAY MORNING. SCATTERED TO
NUMEROUS SHOWERS AND THUNDERSTORMS...SOME WITH LOCALLY HEAVY
RAINS...CAN BE EXPECTED. DUE TO SATURATED SOILS FROM RECENT
RAINS...RUN OFF WILL BE RAPID LEADING TO FLASH FLOODING. GUSTY
WINDS ARE ALSO POSSIBLE NEAR STORMS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.