Alert archive / Texas / Flash Flood Warnings in 2010

Flash Flood Warning 82, NWS Austin/San Antonio, TX

September 8, 20104 counties in Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Sep 8, 2010, 7:32 PM CDT for 4 counties in Texas. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Sep 8, 2010, 7:32 PM CDT (00:32 UTC)
Expired
Sep 8, 2010, 10:15 PM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon
Flood severity
None

Counties Atascosa County, TX, Bexar County, TX, Frio County, TX, Medina County, TX

The radar

The Austin/San Antonio radar (KEWX), 111 km from the middle of the area, began a volume at 00:32 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Sep 8, 9:00 PM CDTFLASH FLOOD1 Nnw Natalia, TXMULTIPLE HOMES FLOODED AND MULTIPLE WATER RESCUES IN DEVINE AND NATALIA. WATER RESCUE ON COUNTY ROAD 6714 AND FM 471.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this flash flood warning; the first came 88 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 0.5 hours before the alert went out and 186 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Del Rio, TX at 00:00Z on 2010-09-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 179 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 00:00Z on 2010-09-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
179 J/kg
Mixed-layer CIN
-81 J/kg
Mixed-layer LCL
1760 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
18 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

987 
WGUS54 KEWX 090032
FFWEWX
TXC013-029-163-325-090315-
/O.NEW.KEWX.FF.W.0082.100909T0032Z-100909T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
732 PM CDT WED SEP 8 2010

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN ATASCOSA COUNTY...
  SOUTHWESTERN BEXAR COUNTY...
  NORTHEASTERN FRIO COUNTY...
  SOUTHEASTERN MEDINA COUNTY...

* UNTIL 1015 PM CDT.

* AT 717 PM CDT...THE NATIONAL WEATHER SERVICE CONTINUES TO TRACK A 
THUNDERSTORM OVER THE CITY OF DEVINE. THE STORM HAS REMAINED 
STATIONARY OVER THE CITY AND HAS CAUSED WIDESPREAD FLOODING IN BOTH 
DEVINE AND NATALIA. THIS IS A LIFE THREATENING SITUATION. MULTIPLE 
ROADS HAVE BEEN CLOSED INCLUDING FM463 AND FM471. RAINFALL RATES 
HAVE REMAINED NEAR 4 TO 6 INCHES PER HOUR OVER THE PAST HOUR. 
ADDITIONAL RAINFALL TOTALS UP TO 4 INCHES WILL BE POSSIBLE WITH THIS 
STORM. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PEARSON...
  NOONAN...SOMERSET...NATALIA...MOORE...LYTLE...LACOSTE...DEVINE...
  CASTROVILLE AND BIG FOOT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN WATER COVERS THE ROAD...TURN AROUND DON'T DROWN. THE LIFE YOU
SAVE MAY BE YOUR OWN.

&&

LAT...LON 2904 9914 2936 9887 2923 9862 2887 9898

$$
2 follow-up statements
443 
WGUS74 KEWX 090109
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
809 PM CDT WED SEP 8 2010

TXC013-029-163-325-090315-
/O.CON.KEWX.FF.W.0082.000000T0000Z-100909T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BEXAR TX-MEDINA TX-ATASCOSA TX-FRIO TX-
809 PM CDT WED SEP 8 2010

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT FOR
NORTHEASTERN FRIO...NORTHWESTERN ATASCOSA...SOUTHEASTERN MEDINA AND
SOUTHWESTERN BEXAR COUNTIES...

AT 809 PM CDT...THE THUNDERSTORM OVER DEVINE HAS DECLINED IN 
INTENSITY OVER THE PAST HALF HOUR. LAW ENFORCEMENT REPORTED THAT 
MUCH OF THE CITIES OF DEVINE AND NATALIA ARE FLOODED AND MANY ROADS 
REMAIN CLOSED. CAUTION SHOULD STILL BE TAKEN AS FLOOD WATERS WILL 
STILL CAUSE PROBLEMS ON ROADWAYS AND IN URBAN AREAS. ANY MOTORIST 
NEAR DEVINE...NATALIA...AND MOORE SHOULD EXERCISE EXTREME CAUTION AS 
THE SUN SETS BECAUSE FLOODED ROADWAYS BECOME DIFFICULT TO 
RECOGNIZE.  

LOCATIONS IN THE WARNING AREA INCLUDE PEARSON...NOONAN...SOMERSET...
NATALIA...LYTLE...LACOSTE...DEVINE AND CASTROVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 2904 9914 2936 9887 2923 9862 2887 9898

$$
559 
WGUS74 KEWX 090246
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
946 PM CDT WED SEP 8 2010

TXC013-029-163-325-090315-
/O.CON.KEWX.FF.W.0082.000000T0000Z-100909T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BEXAR TX-MEDINA TX-ATASCOSA TX-FRIO TX-
946 PM CDT WED SEP 8 2010

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT FOR
NORTHEASTERN FRIO...NORTHWESTERN ATASCOSA...SOUTHEASTERN MEDINA AND
SOUTHWESTERN BEXAR COUNTIES...

AT 946 PM CDT...FLOODING CONTINUES IN DEVINE AND NATALIA. LAW 
ENFORCEMENT REPORTED THAT MULTIPLE HOMES HAVE BEEN FLOODED IN BOTH 
CITIES AND MULTIPLE WATER RESCUES HAVE BEEN PERFORMED. RADAR ECHOS 
HAVE COMPLETELY DIMINISHED OVER THE PAST HOUR IN THE WARNED AREA. 
THIS IS STILL A DANGEROUS SITUATION. IT IS ENCOURAGED TO EXERCISE 
EXTREME CAUTION NEAR DEVINE...AND NATALIA AS NIGHTTIME FLOODING IS 
EXTREMELY HARD TO RECOGNIZE. DO NOT ATTEMPT TO CROSS FLOODED 
ROADWAYS. REMEMBER TURN AROUND...DON'T DROWN. 

LOCATIONS IN THE WARNING AREA INCLUDE PEARSON...NOONAN...SOMERSET...
NATALIA...LYTLE...LACOSTE...DEVINE AND CASTROVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 2904 9914 2936 9887 2923 9862 2887 9898

$$

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Austin/San Antonio, TX wrote its last area forecast discussion before this flash flood warning went out at Sep 8, 6:41 PM CDT, 51 minutes earlier.

Area forecast discussion, Sep 8, 6:41 PM CDT, 51 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
641 PM CDT WED SEP 8 2010

.AVIATION...
TROPICAL CONVECTIVE LINE EXTENDING ALONG I-35 CORRIDOR IS
WEAKENING AT THE PRESENT TIME AND WILL DIMINISH AFTER DARK. I-35
CORRIDOR TERMINALS MOSTLY VFR CIGS EARLY THIS EVENING WITH
OCCASIONAL MVFR CIGS/VSBYS IN SHOWERS AND THUNDERSTORMS. MVFR CIGS
DEVELOPING BY MID EVENING BECOMING VFR BY MIDDAY THURSDAY. WIDELY
SCATTERED SHOWERS AND THUNDERSTORMS DURING THE DAY THURSDAY WILL
LOCALLY LOWER CIGS AND VSBYS. SOUTHEAST WINDS 5 TO 10 KTS. KDRT
TERMINAL VFR BECOMING MVFR CIGS AFTER MIDNIGHT. CLOUDS LIFTING TO
VFR AFTER MIDDAY THURSDAY. SOUTHEAST WINDS 10 TO 15 KTS.

&&

.PREV DISCUSSION... /ISSUED 616 PM CDT WED SEP 8 2010/

UPDATE...
EXTENDED FLASH FLOOD WATCH FOR THE I 35 CORRIDOR AND ALL SOUTHERN
COUNTIES EAST OF HIGHWAY 35.

AS OF 610 PM CDT...A LINE OF SHOWERS AND THUNDERSTORMS ORIENTED
SOUTHEAST TO NORTHEAST ALONG I 35 IS PRODUCING HEAVY DOWNPOURS AND
ISOLATED THUNDERSTORMS WITH ESTIMATED ONE HOUR RAINFALL AMOUNTS OF
2 TO 4 INCHES MAINLY ACROSS THE WESTERN PORTION OF BEXAR COUNTY.
THIS ACTIVITY IS EXPECTED TO PERSIST FOR THE NEXT FEW HOURS AND
AGGRAVATE ONGOING FLOODING FROM EARLIER THIS MORNING.

PREV DISCUSSION... /ISSUED 334 PM CDT WED SEP 8 2010/

DISCUSSION...
BANDS OF SHOWERS AND THUNDERSTORMS WILL CONTINUE TO FEED INTO THE
REMANTS OF TROPICAL STORM HERMINE THIS EVENING INTO TONIGHT.
ALTHOUGH THE WIDESPREAD HEAVY RAIN AND FLOODING THREAT IS RAPIDLY
DECREASING, WILL KEEP FLASH FLOOD WATCH THROUGH THE SCHEDULED
EXPIRATION TIME OF 6 PM AS SOME HEAVY RAINS CAN BE EXPECTED EARLY
THIS EVENING. DUE TO RESIDUAL DEEP TROPICAL MOISTURE, WIDELY
SCATTERED SHOWERS AND THUNDERSTORMS CAN BE EXPECTED ON THURSDAY
WITH ISOLATED HEAVY RAINS POSSIBLE. FRIDAY THROUGH NEXT WEEK, THE
SUBTROPICAL RIDGE BECOMES THE DOMINANT FEATURE WITH DECREASED
MOISTURE LEVELS AND STRONG SUBSIDENCE ALOFT. THERE MAY BE ISOLATED
SHOWERS AND THUNDERSTORMS EACH DAY DUE TO DAYTIME HEATING MAINLY
NEAR THE COASTAL PLAINS ALONG THE SEABREEZE. MAV/MEX GUIDANCE
SEEMS REASONABLE WITH TEMPERATURES ABOVE AVERAGE FOR MID SEPTEMBER
WITH LOWS IN THE 70S AND HIGHS IN THE 90S. HEAT INDEX VALUES UP TO
105 ARE POSSIBLE DURING THE MID AFTERNOON HOURS.

PREV DISCUSSION... /ISSUED 1232 PM CDT WED SEP 8 2010/

AVIATION...
TROPICAL MOISTURE WILL CONTINUE TO FEED INTO SOUTH CENTRAL TEXAS
THIS AFTERNOON. CIGS WILL BE MVFR IN THE AUSTIN AND SAN ANTONIO
AREAS. A LINE OF SHOWERS IS SLOWLY DRIFTING TO THE EAST AND SHOULD
EVENTUALLY MOVE ACROSS I35. THIS WILL BRING SHRA TO THE AREA
BETWEEN ABOUT 20Z AND 23Z. CIGS WILL DROP TO IFR OVERNIGHT.
IMPROVEMENT TO VFR TOMORROW LATE MORNING.

DRT HAS VFR CIG AND WILL REMAIN THAT WAY UNTIL LATE TONIGHT WHEN
IT WILL DROP TO MVFR.

&&

.PRELIMINARY POINT TEMPS/POPS...
AUSTIN CAMP MABRY              77  94  78  96  77 /  30  20  10  10  -
AUSTIN BERGSTROM INTL AIRPORT  77  94  78  95  76 /  30  20  10  10  -
NEW BRAUNFELS MUNI AIRPORT     76  94  76  96  76 /  30  20  10  10  -
BURNET MUNI AIRPORT            74  91  76  91  75 /  30  20  10  10  -
DEL RIO INTL AIRPORT           77  95  77  96  77 /  10  10  10  10  -
GEORGETOWN MUNI AIRPORT        76  93  76  93  76 /  30  20  10  10  10
HONDO MUNI AIRPORT             76  92  77  94  76 /  30  10  10  10  -
SAN MARCOS MUNI AIRPORT        76  94  77  95  77 /  30  20  10  10  -
LA GRANGE - FAYETTE REGIONAL   77  92  78  93  77 /  30  20  10  10  -
SAN ANTONIO INTL AIRPORT       78  93  78  95  78 /  30  20  10  10  -
STINSON MUNI AIRPORT           77  95  78  95  77 /  30  20  10  10  -

&&

.EWX WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH UNTIL MIDNIGHT CDT TONIGHT FOR THE FOLLOWING
COUNTIES: ATASCOSA...BASTROP...BEXAR...CALDWELL...COMAL...DE WITT...
FAYETTE...FRIO...GONZALES...GUADALUPE...HAYS...KARNES...LAVACA...
LEE...MEDINA...TRAVIS...WILLIAMSON...WILSON.

&&

17/02
Hazardous weather outlook, Sep 8, 5:20 AM CDT, 14 hours 12 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
520 AM CDT WED SEP 8 2010

TXZ171>173-183>194-202>209-217>225-228-091030-
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-
520 AM CDT WED SEP 8 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

.DAY ONE...TODAY AND TONIGHT...
LIFE THREATENING FLASH FLOODING TO CONTINUE TODAY.

A DEEP MOIST TROPICAL INFLOW OFF THE GULF OF MEXICO IN THE WAKE
OF HERMINE WILL CONTINUE HIGH CHANCES FOR SHOWERS AND THUNDERSTORMS
ACROSS THE CENTRAL AND EASTERN PORTIONS OF SOUTH CENTRAL TEXAS AND
THE HILL COUNTRY THROUGH EARLY THIS EVENING. HEAVY RAIN WITH THESE
STORMS WILL PRODUCE ADDITIONAL RAINFALL AMOUNTS OF 2 TO 4 INCHES
TODAY...WITH ISOLATED TOTALS OF 6 INCHES OR MORE POSSIBLE. THIS
ADDITIONAL RAINFALL WILL BE ACROSS AREAS WHICH HAVE ALREADY
RECEIVED ESTIMATED AMOUNTS OF UP TO 10 TO 15 INCHES ON TUESDAY AND
TUESDAY NIGHT. A FLASH FLOOD WATCH IS IN EFFECT FOR MUCH OF SOUTH
CENTRAL TEXAS AND THE HILL COUNTRY UNTIL 6 PM. IN ADDITION TO FLASH
FLOODING TODAY...RIVER FLOODING IS POSSIBLE TODAY AND TONIGHT.
THE SHOWERS AND THUNDERSTORMS WILL TAPER OFF TONIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...
RAIN CHANCES WILL CONTINUE TO DECREASE EARLY THURSDAY MORNING.
HOWEVER...RIVER FLOODING WILL STILL BE POSSIBLE THROUGH THE NEXT
FEW DAYS DUE TO RUNOFF FROM HEAVY RAINFALL.

.SPOTTER INFORMATION STATEMENT...
SPOTTER REPORTS WILL BE APPRECIATED THROUGH THIS EVENING.

In the hours before

Local storm report, Sep 8, 3:12 PM CDT, 4 hours 20 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
312 PM CDT WED SEP 08 2010

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

1011 AM     FLASH FLOOD      15 E MEDINA             29.80N  99.00W
09/08/2010                   BANDERA            TX   DEPT OF HIGHWAYS

            NUMEROUS ROADS CLOSED DUE TO FLOODING... FM1283...
            FM37... FM462... FM1283 AND SH46.

&&

EVENT NUMBER EWX1000503

MCDONALD
Local storm report, Sep 8, 4:29 PM CDT, 3 hours 3 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
429 PM CDT WED SEP 08 2010

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

0743 AM     HEAVY RAIN       10 NNE SAN ANTONIO      29.55N  98.43W
09/07/2010  E1.24 INCH       BEXAR              TX   PUBLIC

            1.24 INCHES IN THE PAST THREE HOURS.

0826 AM     FLASH FLOOD      10 NNE SAN ANTONIO      29.55N  98.43W
09/07/2010                   BEXAR              TX   DEPT OF HIGHWAYS

            LOOKOUT ROAD TO OCONNOR IS CLOSED DUE TO FLOODING...
            WEIDNER ROAD TO SCHERTZ IS CLOSED DUE TO FLOODING.

0937 AM     FLASH FLOOD      5 SE AUSTIN             30.22N  97.68W
09/07/2010                   TRAVIS             TX   DEPT OF HIGHWAYS

            POSTON LANE AND HOEKE LANE ARE CLOSED IN THE CARSON
            CREEK AREA.

1000 AM     HEAVY RAIN       7 SE NEW BERLIN         29.41N  98.01W
09/07/2010  M2.18 INCH       GUADALUPE          TX   COCORAHS

            0.93 INCHES IN THE PAST 2.5 HOURS.

1200 PM     NON-TSTM WND GST 3 E CALAVERAS LAKE      29.28N  98.25W
09/07/2010  M45 MPH          WILSON             TX   PARK SERVICE

            CALAVERAS LAKE REPORTED WINDS OF 35 TO 45 MPH ALONG
            WITH HEAVY RAINFALL ABOUT 2 INCHES.

1200 PM     HEAVY RAIN       3 E CALAVERAS LAKE      29.28N  98.25W
09/07/2010  E2.00 INCH       WILSON             TX   PARK SERVICE

            CALAVERAS LAKE REPORTED WINDS OF 35 TO 45 MPH ALONG
            WITH HEAVY RAINFALL ABOUT 2 INCHES.

1245 PM     TROPICAL STORM   7 WNW SAN ANTONIO       29.46N  98.60W
09/07/2010                   BEXAR              TX   SCHOOL OFFICIAL

            MINOR STREET FLOODING... LARGE TREE LIMBS BLOWN DOWN
            AND WIND GUSTS TO 55 MPH.

1250 PM     FLASH FLOOD      5 NW SAN ANTONIO        29.47N  98.55W
09/07/2010                   BEXAR              TX   DEPT OF HIGHWAYS

            SAN ANTONIO CURRENTLY HAS 17 ROADS CLOSED DUE TO
            FLOODING.

1250 PM     TROPICAL STORM   5 NE SAN ANTONIO        29.47N  98.43W
09/07/2010                   BEXAR              TX   COUNTY OFFICIAL

            THERE ARE 6 POWER LINES DOWN THROUGH OUT SAN ANTONIO
            DUE TO STRONG WINDS.

0100 PM     HEAVY RAIN       3 WSW NEW BRAUNFELS     29.68N  98.16W
09/07/2010  M1.98 INCH       COMAL              TX   COCORAHS

            1.98 INCHES OF RAINFALL SO FAR WITH 0.33 INCHES IN THE
            PAST 25 MINUTES.

0100 PM     HEAVY RAIN       6 SW BOERNE             29.75N  98.82W
09/07/2010  M1.88 INCH       KENDALL            TX   COCORAHS

            1.88 INCHES OF RAINFALL SO FAR WITH 0.36 IN THE PAST 60
            MINUTES.

0105 PM     TROPICAL STORM   13 NE SAN ANTONIO       29.55N  98.34W
09/07/2010                   BEXAR              TX   AMATEUR RADIO

            WIND GUSTS TO 57 MPH NEAR TOPPERWINE ROAD.

0110 PM     HEAVY RAIN       6 SW BASTROP            30.04N  97.36W
09/07/2010  M2.22 INCH       BASTROP            TX   COCORAHS

            2.22 INCHES OF RAINFALL SO FAR WITH 0.35 INCHES IN THE
            PAST 2.5 HOURS.

0120 PM     TROPICAL STORM   10 NNE SAN ANTONIO      29.55N  98.43W
09/07/2010                   BEXAR              TX   PUBLIC

            WINDS ESTIMATED TO 50 MPH NEAR I35 AND OCONNER.

0120 PM     NON-TSTM WND GST 2 N CASTLE HILLS        29.55N  98.52W
09/07/2010  M50 MPH          BEXAR              TX   NWS EMPLOYEE

            50 MPH WINDS... LARGE TREE LIMBS BLOWN DOWN AND 2.57
            INCHES OF RAINFALL SO FAR.

0130 PM     TROPICAL STORM   6 SW BOERNE             29.75N  98.82W
09/07/2010                   KENDALL            TX   COCORAHS

            2.54 INCHES SO FAR WITH 0.66 IN THE PAST 30 MINUTES AND
            WIND GUSTS 40 TO 50 MPH.

0130 PM     NON-TSTM WND GST 6 SW BOERNE             29.75N  98.82W
09/07/2010  E50 MPH          KENDALL            TX   COCORAHS

            2.54 INCHES SO FAR WITH 0.66 IN THE PAST 30 MINUTES AND
            WIND GUSTS 40 TO 50 MPH.

0200 PM     TROPICAL STORM   8 NW SAN ANTONIO        29.50N  98.58W
09/07/2010                   BEXAR              TX   PUBLIC

            LARGE TREES UP TO 16 INCHES IN DIAMETER WERE BLOWN
            DOWN.

0200 PM     HEAVY RAIN       2 SSW MARION            29.54N  98.16W
09/07/2010  M1.94 INCH       GUADALUPE          TX   COCORAHS

            1.94 INCHES SO FAR AND 0.96 IN 2.5 HOURS.

0240 PM     FLASH FLOOD      4 ENE GARDEN RIDGE      29.65N  98.23W
09/07/2010                   COMAL              TX   COUNTY OFFICIAL

            SEVERAL ROADS CLOSED IN COMAL COUNTY... CR 1337 AND
            SECTIONS OF SMITHSON VALLEY ROAD.

0300 PM     HEAVY RAIN       4 WNW BOERNE            29.83N  98.80W
09/07/2010  M2.42 INCH       KENDALL            TX   COCORAHS

0337 PM     TORNADO          1 S MOULTON             29.56N  97.15W
09/07/2010                   LAVACA             TX   BROADCAST MEDIA

            POSSIBLE TORNADO JUST SOUTH OF MOULTON NEAR THE
            INTERSECTION OF HIGHWAY 95 AND 271. REPORTS FROM MEDIA
            AND LAW ENFORCEMENT INDICATE POWER LINES DOWN AND A BARN
            ROOF ON THE ROAD. TREES LIMBS SNAPPED ALONG HIGHWAY 271
            EAST OF HIGHWAY 95. TREES UPROOTED IN THE AREA ALONG
            WITH A SHORT PATH OF DOWNED CORN STALKS IN A NEARBY
            FIELD.

0350 PM     HEAVY RAIN       4 SSE TWIN SISTERS      29.95N  98.37W
09/07/2010  M2.79 INCH       COMAL              TX   COCORAHS

            SOME MINOR FLOODING.

0400 PM     HEAVY RAIN       5 NE HOLLYWOOD PARK     29.65N  98.42W
09/07/2010  M2.50 INCH       BEXAR              TX   COCORAHS

            MINOR FLOODING

0400 PM     HEAVY RAIN       3 ENE SEGUIN            29.59N  97.92W
09/07/2010  M1.50 INCH       GUADALUPE          TX   COCORAHS

0445 PM     FLASH FLOOD      2 SE FREDERICKSBURG     30.25N  98.85W
09/07/2010                   GILLESPIE          TX   LAW ENFORCEMENT

            WATER AND DEBRIS OVER OLD SAN ANTONIO ROAD MAKING THE
            ROAD IMPASSABLE

0500 PM     FLASH FLOOD      SAN ANTONIO             29.42N  98.49W
09/07/2010                   BEXAR              TX   CITY OFFICIAL

            34 ROADS CLOSED IN AND AROUND THE SAN ANTONIO METRO
            AREA

0515 PM     FLASH FLOOD      BOERNE                  29.80N  98.74W
09/07/2010                   KENDALL            TX   LAW ENFORCEMENT

            400 BLOCK OF FM474 CLOSED DUE TO WATER OVER ROAD...
            ALSO CLOSED IS OLD FREDERICKSBURG ROAD NEAR THE COUNTY
            LINE

0638 PM     FUNNEL CLOUD     5 NNE GARFIELD          30.26N  97.53W
09/07/2010                   TRAVIS             TX   LAW ENFORCEMENT

            PUBLIC REPORT OF A FUNNEL CLOUD MOVING NORTH NEAR
            VICINITY OF FM969 AND BURLESON MANOR ROAD. FUNNEL CLOUD
            WAS NOT OBSERVED TOUCHING THE GROUND.

0705 PM     FLASH FLOOD      3 ESE SUNSET VALLEY     30.21N  97.77W
09/07/2010                   TRAVIS             TX   CITY OFFICIAL

            SEVERAL ROADS CLOSED DUE TO HIGH WATER.

0720 PM     FLASH FLOOD      5 NNE PFLUGERVILLE      30.50N  97.59W
09/07/2010                   TRAVIS             TX   PUBLIC

            MINOR STREET FLOODING FROM NEAR 1.5 INCHES OF RAIN IN
            45 MINUTES

0725 PM     FLASH FLOOD      FREDERICKSBURG          30.27N  98.87W
09/07/2010                   GILLESPIE          TX   LAW ENFORCEMENT

            WATER OVER THE ROAD AND ABOVE CURB HEIGHT AT 400 WEST
            SHUBERT AND IN THE 300 TO 400 BLOCK OF OLD SAN ANTONIO
            ROAD.

0945 PM     FLASH FLOOD      AUSTIN                  30.27N  97.74W
09/07/2010                   TRAVIS             TX   CITY OFFICIAL

            OLD BEE CAVE ROAD CLOSED DUE TO HIGH WATER

1000 PM     FLASH FLOOD      3 WSW NEW BRAUNFELS     29.69N  98.17W
09/07/2010                   COMAL              TX   COCORAHS

            THE DRY COMAL CREEK IS UP TWO FEET OVER THE LOW WATER
            CROSSING

1013 PM     FLASH FLOOD      AUSTIN                  30.27N  97.74W
09/07/2010                   TRAVIS             TX   CITY OFFICIAL

            6200 JOE TANNER ROAD CLOSED DUE TO HIGH WATER

1030 PM     FLASH FLOOD      FLORENCE                30.84N  97.79W
09/07/2010                   WILLIAMSON         TX   LAW ENFORCEMENT

            WATER GETTING INTO HOMES CAUSING EVACUATION OF
            APPROXIMATELY 25 RESIDENTS

1040 PM     FLASH FLOOD      3 W BRUSHY CREEK        30.51N  97.78W
09/07/2010                   WILLIAMSON         TX   EMERGENCY MNGR

            BRUSHY CREEK ROAD AT BRUSHY BEND DRIVE AND NUMEROUS
            OTHER ROADS CLOSED DUE TO HIGH WATER

1045 PM     FLASH FLOOD      3 NNW WEST LAKE HILLS   30.34N  97.82W
09/07/2010                   TRAVIS             TX   LAW ENFORCEMENT

            WATER GETTING INTO TWO HOMES AT THE 2900 BLOCK OF
            RIVERCREST DRIVE

1100 PM     FLASH FLOOD      6 NE WIMBERLEY          30.05N  98.03W
09/07/2010                   HAYS               TX   DEPT OF HIGHWAYS

            RM150 CLOSED DUE TO FLOODING

1129 PM     FLASH FLOOD      1 NNE SAN LEANNA        30.16N  97.81W
09/07/2010                   TRAVIS             TX   CITY OFFICIAL

            10100 DAVID MOORE DRIVE AND SEVERAL OTHER ROADS CLOSED
            AROUND THE AUSTIN METRO AREA DUE TO HIGH WATER

1252 AM     FLASH FLOOD      2 NNW SCHERTZ           29.58N  98.27W
09/08/2010                   GUADALUPE          TX   COCORAHS

            RAINFALL NEAR 1.5 INCHES IN ONE HOUR CAUSING MINOR
            STREET FLOODING

0127 AM     FLASH FLOOD      2 NNW SCHERTZ           29.58N  98.27W
09/08/2010                   GUADALUPE          TX   COCORAHS

            1.00 TO 1.24 INCHES WITHIN A 30 MINUTE TIME FRAME.

0128 AM     FLASH FLOOD      1 NE CIBOLO             29.59N  98.22W
09/08/2010                   GUADALUPE          TX   COCORAHS

            2.00 TO 2.24 INCHES WITHIN A TWO HOUR TIME PERIOD
            CAUSING MINOR STREET FLOODING.

0152 AM     FLASH FLOOD      3 NNE MCQUEENEY         29.64N  98.03W
09/08/2010                   GUADALUPE          TX   LAW ENFORCEMENT

            LINK ROAD AT HIGHWAY 46... YOUNGSFORD AT CREEK ROAD...
            AND SEVERAL OTHER LOW WATER CROSSINGS CLOSED.

0158 AM     HEAVY RAIN       10 NNW AUSTIN           30.40N  97.80W
09/08/2010  M10.11 INCH      TRAVIS             TX   BROADCAST MEDIA

            NWS COOP RAIN GAUGE MEASURED 10.11 INCHES FOR THE
            CALENDAR DAY ON TUESDAY.

0350 AM     HEAVY RAIN       3 WSW NEW BRAUNFELS     29.68N  98.16W
09/08/2010  M7.10 INCH       COMAL              TX   COCORAHS

            THE DRY COMAL CREEK WAS AT 16.4 FEET AND FLOODED.

0435 AM     FLASH FLOOD      SAN ANTONIO             29.42N  98.49W
09/08/2010                   BEXAR              TX   CITY OFFICIAL

            THE CITY REPORTS THAT 40 ROADS REMAIN CLOSED ACROSS SAN
            ANTONIO.

0446 AM     FLASH FLOOD      AUSTIN                  30.27N  97.74W
09/08/2010                   TRAVIS             TX   CITY OFFICIAL

            CITY OF AUSTIN AND TRAVIS COUNTY ROAD CLOSURE WEBSITE
            REPORTS 32 ROADS CLOSED ACROSS AUSTIN AND TRAVIS COUNTY.

0556 AM     FLASH FLOOD      NEW BRAUNFELS           29.70N  98.12W
09/08/2010                   COMAL              TX   COUNTY OFFICIAL

            THE COUNTY ROAD CLOSURE WEBSITE REPORTS 10 ROADS CLOSED
            ACROSS PORTIONS OF COMAL COUNTY.

0730 AM     FLASH FLOOD      2 W GEORGETOWN          30.65N  97.72W
09/08/2010                   WILLIAMSON         TX   DEPT OF HIGHWAYS

            SH29 CLOSED DUE TO FLOODING.

0800 AM     HEAVY RAIN       4 WNW BOERNE            29.83N  98.80W
09/08/2010  M3.33 INCH       KENDALL            TX   COCORAHS

            CIBOLO CREEK UPSTREAM OF BOERNE HAS RISEN 6 FEET.

0815 AM     FLASH FLOOD      3 N MARION              29.62N  98.14W
09/08/2010                   GUADALUPE          TX   DEPT OF HIGHWAYS

            FM2538 CLOSED DUE TO FLOODING.

0823 AM     FLASH FLOOD      4 E LACKLAND AFB        29.38N  98.56W
09/08/2010                   BEXAR              TX   DEPT OF HIGHWAYS

            FM2536 CLOSED DUE TO FLOODING.

0845 AM     HEAVY RAIN       6 S FREDERICKSBURG      30.19N  98.87W
09/08/2010  E3.49 INCH       GILLESPIE          TX   PUBLIC

0847 AM     FLASH FLOOD      10 NW NEW BRAUNFELS     29.81N  98.24W
09/08/2010                   COMAL              TX   DEPT OF HIGHWAYS

            FM1863 DUE TO FLOODING ON THE DRY COMAL CREEK.

0852 AM     FLASH FLOOD      10 NE HONDO             29.46N  99.04W
09/08/2010                   MEDINA             TX   DEPT OF HIGHWAYS

            SEVERAL ROADS CLOSED DUE TO FLOODING... FM463... FM471
            AND FM462.

0918 AM     FLASH FLOOD      5 N BOERNE              29.87N  98.74W
09/08/2010                   KENDALL            TX   DEPT OF HIGHWAYS

            SEVERAL ROADS CLOSED DUE TO FLOODING... FM473 QNE
            FM1376.

0920 AM     FLASH FLOOD      2 N LAKEHILLS           29.63N  98.94W
09/08/2010                   BANDERA            TX   LAW ENFORCEMENT

            ROADS IN AND AROUND LAKE HILLS ARE IN FLOOD AND CLOSED.

1000 AM     FLASH FLOOD      5 S LOCKHART            29.80N  97.68W
09/08/2010                   CALDWELL           TX   LAW ENFORCEMENT

            COUNTY ROAD 233 WAS CLOSED FOR A WHILE.

1000 AM     FLASH FLOOD      15 W BLANCO             30.10N  98.67W
09/08/2010                   KENDALL            TX   DEPT OF HIGHWAYS

            SEVERAL ROADS CLOSED DUE TO FLOODING... FM1320 AND
            FM962.

1001 AM     FLASH FLOOD      3 WSW MARBLE FALLS      30.56N  98.32W
09/08/2010                   BURNET             TX   LAW ENFORCEMENT

            MOST OF THE LOW WATER CROSSINGS IN MARBLE FALLS AND
            HORSESHOE BAY ARE CLOSED.

1010 AM     FLASH FLOOD      1 W SAN MARCOS          29.88N  97.95W
09/08/2010                   HAYS               TX   LAW ENFORCEMENT

            POST ROAD WAS CLOSED FOR AWHILE.

1010 AM     FLASH FLOOD      2 N PIPE CREEK          29.75N  98.93W
09/08/2010                   BANDERA            TX   LAW ENFORCEMENT

            ENGLISH CROSSING WAS CLOSED FOR AWHILE.

1010 AM     FLASH FLOOD      3 E BOERNE              29.80N  98.69W
09/08/2010                   KENDALL            TX   LAW ENFORCEMENT

            HIGHWAY 46 EAST WAS CLOSED FOR AWHILE.

1010 AM     FLASH FLOOD      11 E FREDERICKSBURG     30.27N  98.69W
09/08/2010                   GILLESPIE          TX   LAW ENFORCEMENT

            HIGHWAY 1623 WAS CLOSED FOR AWHILE.

1011 AM     FLASH FLOOD      15 E MEDINA             29.80N  99.00W
09/08/2010                   BANDERA            TX   DEPT OF HIGHWAYS

            NUMEROUS ROADS CLOSED DUE TO FLOODING... FM1283...
            FM37... FM462... FM1283 AND SH46.

1030 AM     FLASH FLOOD      10 W BLANCO             30.10N  98.59W
09/08/2010                   KENDALL            TX   LAW ENFORCEMENT

            COUNTY ROAD 1320 WAS CLOSED FOR AWHILE.

1030 AM     FLASH FLOOD      5 SW BURNET             30.71N  98.29W
09/08/2010                   BURNET             TX   DEPT OF HIGHWAYS

            SEVERAL ROADS CLOSED DUE TO FLOODING... FM2147 AND
            FM2342.

1050 AM     FLASH FLOOD      13 W JOHNSON CITY       30.27N  98.62W
09/08/2010                   GILLESPIE          TX   PARK SERVICE

            RANCH ROAD 1 AND KLEIN ROAD ARE CLOSED.

1100 AM     HEAVY RAIN       4 WNW BOERNE            29.83N  98.80W
09/08/2010  M1.57 INCH       KENDALL            TX   COCORAHS

            HEAVY RAIN FOR THE PAST THREE HOURS... CIBOLO CREEK
            UPSTREAM FROM BOERNE IS BACK UP TO OVER 6 FEET.

&&

EVENT NUMBER EWX1000508 EWX1000450 EWX1000451 EWX1000452 EWX1000453
EWX1000509 EWX1000457 EWX1000454 EWX1000455 EWX1000456 EWX1000507
EWX1000458 EWX1000506 EWX1000459 EWX1000460 EWX1000461 EWX1000510
EWX1000462 EWX1000463 EWX1000464 EWX1000465 EWX1000467 EWX1000466
EWX1000504 EWX1000505 EWX1000469 EWX1000468 EWX1000470 EWX1000471
EWX1000472 EWX1000474 EWX1000473 EWX1000475 EWX1000477 EWX1000476
EWX1000481 EWX1000479 EWX1000478 EWX1000511 EWX1000480 EWX1000482
EWX1000483 EWX1000484 EWX1000485 EWX1000486 EWX1000490 EWX1000487
EWX1000488 EWX1000489 EWX1000512 EWX1000491 EWX1000519 EWX1000518
EWX1000517 EWX1000516 EWX1000515 EWX1000513 EWX1000492 EWX1000496
EWX1000514 EWX1000493 EWX1000497 EWX1000499 EWX1000500 EWX1000501
EWX1000503 EWX1000498 EWX1000502 EWX1000494 EWX1000495

CJM
Local storm report, Sep 8, 6:13 PM CDT, 1 hour 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
613 PM CDT WED SEP 08 2010

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

0612 PM     FLASH FLOOD      DEVINE                  29.15N  98.90W
09/08/2010                   MEDINA             TX   PUBLIC

            BLACK CREEK AND FRANSICO CREEK ARE BEGINING TO FLOOD.

&&

EVENT NUMBER EWX1000520

CJM
Local storm report, Sep 8, 6:22 PM CDT, 1 hour 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
622 PM CDT WED SEP 08 2010

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

0621 PM     HEAVY RAIN       1 S WIMBERLEY           29.98N  98.10W
09/08/2010  M6.23 INCH       HAYS               TX   TRAINED SPOTTER

            6.23 INCHES SOUTH OF WIMBERLEY IN THE PAST HOUR AND A
            HALF.

&&

EVENT NUMBER EWX1000521

CJM
Local storm report, Sep 8, 6:45 PM CDT, 47 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
645 PM CDT WED SEP 08 2010

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

0532 PM     FLASH FLOOD      4 E HOLLYWOOD PARK      29.60N  98.42W
09/08/2010                   BEXAR              TX   DEPT OF HIGHWAYS

            BULVERDE RD COLSED FROM JONES MALTSBERGER TO REDLAND RD

&&

EVENT NUMBER EWX1000522

JPB
Local storm report, Sep 8, 7:21 PM CDT, 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
721 PM CDT WED SEP 08 2010

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

0719 PM     FLASH FLOOD      DEVINE                  29.15N  98.90W
09/08/2010                   MEDINA             TX   LAW ENFORCEMENT

            MUCH OF THE CITIES OF DEVINE AND NATALIA ARE FLOODED.
            MANY ROADS ARE CLOSED INCLUDING FM463 AND FM471.

&&

EVENT NUMBER EWX1000523

JPB

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 8, 7:02 PM CDTAreal Flood AdvisoryEWXBandera, Bexar, Blanco, Comal, Gillespie, Hays and 5 more118 min
Sep 8, 7:25 PM CDTRiver Flood WarningEWXWilliamson2 hr
Sep 8, 10:08 PM CDTAreal Flood AdvisoryEWXAtascosa, Bexar, Frio, Medina3 hr
Sep 9, 2:54 AM CDTAreal Flood AdvisoryEWXWilliamson3 hr
Sep 9, 4:53 AM CDTAreal Flood AdvisoryEWXBandera, Gillespie, Kerr3 hr

Nearby

Flash Flood Warnings in Texas, 2010Every flash flood warning in 2010

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.