Alert archive / Texas / Flash Flood Warnings in 2010

Flash Flood Warning 7, NWS Houston/Galveston, TX

June 9, 20105 counties in Texas

NWS Houston/Galveston, TX issued this flash flood warning at Jun 9, 2010, 10:57 AM CDT for 5 counties in Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 9, 2010, 10:57 AM CDT (15:57 UTC)
Expired
Jun 9, 2010, 2:00 PM CDT
In force
3 hr
Issued by
NWS Houston/Galveston, TX
Area
Storm-based polygon
Flood severity
None

Counties Brazos County, TX, Burleson County, TX, Grimes County, TX, Madison County, TX, Washington County, TX

The radar

The Ft Hood radar (KGRK), 110 km from the middle of the area, began a volume at 15:59 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.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 4.0 hours before the alert went out and 297 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, Lake Charles Mun, LA at 12:00Z on 2010-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3174 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, Lake Charles Mun, LA at 12:00Z on 2010-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 87 square meters per square second.193958Sfc1 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
3174 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
576 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
87 m²/s²
0-3 km storm-relative helicity
88 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.8

Open this sounding in Storm Lab

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 Houston/Galveston, TX wrote its last area forecast discussion before this flash flood warning went out at Jun 9, 10:16 AM CDT, 41 minutes earlier.

Area forecast discussion, Jun 9, 10:16 AM CDT, 41 minutes before
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Hazardous weather outlook, Jun 9, 8:19 AM CDT, 2 hours 38 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
819 AM CDT WED JUN 9 2010

TXZ163-176-195>198-210-211-101200-
AUSTIN-BRAZOS-BURLESON-COLORADO-GRIMES-HOUSTON-MADISON-WASHINGTON-
819 AM CDT WED JUN 9 2010

...SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY...
...FLOOD WATCH IN EFFECT THROUGH THIS EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS.

.DAY ONE...TODAY AND TONIGHT

SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ASSOCIATED WITH AN
UPPER LOW OVER THE TEXAS HILL COUNTRY WILL MOVE ACROSS THE AREA THIS
MORNING AND LIKELY PERSIST THROUGH MUCH OF THIS AFTERNOON. DAMAGING
WINDS AND ISOLATED TORNADOES ARE POSSIBLE IN THE STRONGER STORMS.
WITH THE UPPER LOW IS EXPECTED TO REMAIN TO OUR WEST...THERE IS A
CHANCE THAT THE SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP
THROUGH TONIGHT. WIDESPREAD RAINFALL TOTALS OF 1 TO 3 INCHES ARE EXPECTED
BY LATE TONIGHT MAINLY ALONG AND WEST OF A LINE FROM CROCKETT TO NAVASOTA
TO COLUMBUS. LOCALLY HIGHER AMOUNTS...POSSIBLY EXCEEDING 5 INCHES...ARE
POSSIBLE.

.DAY TWO...THURSDAY

AS THE UPPER LOW MOVES NORTHWARD AWAY FROM THE AREA...ISOLATED TO SCATTERED
STRONG THUNDERSTORMS WILL BE POSSIBLE. RAINFALL AMOUNTS GENERALLY LESS
THAN 1 ARE EXPECTED. THE STORMS ARE EXPECTED TO END BY THE EVENING.

.DAYS THREE THROUGH SEVEN...FRIDAY THROUGH TUESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE REQUIRED TODAY.

GMZ330-335-350-355-TXZ164-177>179-199-200-212>214-226-227-235>238-
101200-
BRAZORIA-CHAMBERS-FORT BEND-GALVESTON-GALVESTON BAY-HARRIS-
JACKSON-LIBERTY-MATAGORDA-MATAGORDA BAY-MONTGOMERY-POLK-
SAN JACINTO-TRINITY-WALKER-WALLER-
WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL OUT 20 NM-
WATERS FROM HIGH ISLAND TO FREEPORT OUT 20 NM-WHARTON-
819 AM CDT WED JUN 9 2010

...SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS.

.DAY ONE...TODAY AND TONIGHT

SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP
ACROSS THE AREA TODAY. THIS ACTIVITY WILL LIKELY PERSIST THROUGH THE
AFTERNOON HOURS. DAMAGING WINDS AND ISOLATED TORNADOES ARE POSSIBLE
IN THE STRONGER STORMS. SINCE UPPER LOW OVER THE HILL COUNTRY IS EXPECTED
TO REMAIN TO OUR WEST...THERE IS A CHANCE THAT THE SHOWERS AND THUNDERSTORMS
WILL CONTINUE TO DEVELOP THROUGH TONIGHT. RAINFALL TOTALS IN THE STRONGER
STORMS ARE EXPECTED TO AVERAGE 1 TO 3 INCHES.

.DAY TWO...THURSDAY

AS THE UPPER LOW MOVES NORTHWARD AWAY FROM THE AREA...ISOLATED TO SCATTERED
STRONG THUNDERSTORMS WILL BE POSSIBLE. RAINFALL AMOUNTS GENERALLY LESS
THAN 1 ARE EXPECTED. THE STORMS ARE EXPECTED TO END BY THE EVENING.

.DAYS THREE THROUGH SEVEN...FRIDAY THROUGH TUESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED TODAY.

In the hours before

Special weather statement, Jun 9, 5:43 AM CDT, 5 hours 14 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
543 AM CDT WED JUN 9 2010

TXZ177-198-199-091145-
GRIMES-MONTGOMERY-WALKER-
543 AM CDT WED JUN 9 2010

...SIGNIFICANT WEATHER ADVISORY...

AT 539 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER SOUTH CENTRAL GRIMES COUNTY...MOVING
NORTHEAST AT 20 MPH.

WINDS GREATER THAN 40 MPH AND BRIEF HEAVY DOWNPOURS ARE POSSIBLE
WITH THIS STORM.

LOCATIONS IN THE PATH OF THIS STORM INCLUDE...RICHARDS...
PLANTERSVILLE...DOBBIN...DACUS...AND TODD MISSION.

GUSTY WINDS MAY CAUSE UNSECURED SMALL OBJECTS SUCH AS TRASH CANS TO
BLOW AROUND. SEEK SHELTER IN A STURDY STRUCTURE OR NON-CONVERTIBLE
AUTOMOBILE UNTIL THIS STORM HAS PASSED.

LAT...LON 3069 9553 3024 9583 3024 9589 3030 9603
      3080 9581
TIME...MOT...LOC 1042Z 206DEG 19KT 3034 9589
Special weather statement, Jun 9, 9:07 AM CDT, 1 hour 50 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
907 AM CDT WED JUN 9 2010

TXZ163-164-176>178-198-091500-
GRIMES-HOUSTON-MADISON-SAN JACINTO-TRINITY-WALKER-
907 AM CDT WED JUN 9 2010

...SIGNIFICANT WEATHER ADVISORY...

AT 903 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 14 MILES SOUTHEAST OF MADISONVILLE...MOVING
NORTHEAST AT 30 MPH.

FUNNEL CLOUDS...WINDS GREATER THAN 40 MPH...FREQUENT CLOUD TO GROUND
LIGHTNING...BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH THIS STORM.

LOCATIONS IN THE PATH OF THIS STORM INCLUDE...CRABBS PRAIRIE...
BEDIAS...AUSTONIO...RIVERSIDE...POINT BLANK...OAKHURST...MIDWAY...
MADISONVILLE...LOVELADY AND HUNTSVILLE.

GUSTY WINDS MAY CAUSE UNSECURED SMALL OBJECTS SUCH AS TRASH CANS TO
BLOW AROUND. AVOID TALL OUTDOOR OBJECTS THAT CAN ATTRACT LIGHTNING.
IF YOU ARE OUTDOORS AND HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.  SEEK SHELTER IN A STURDY STRUCTURE OR
NON-CONVERTABLE AUTOMOBILE UNTIL THIS STORM HAS PASSED.

A TORNADO WATCH IS IN EFFECT UNTIL 3 PM FOR THE AREA.

A FLOOD WATCH IS IN EFFECT UNTIL 7 PM FOR THE AREA.

LAT...LON 3136 9531 3070 9517 3061 9601 3106 9605
      3110 9594 3111 9578 3114 9578 3116 9575
      3117 9574 3119 9574
TIME...MOT...LOC 1406Z 234DEG 24KT 3087 9569
Special weather statement, Jun 9, 10:22 AM CDT, 35 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1022 AM CDT WED JUN 9 2010

TXZ163-164-177-091615-
HOUSTON-TRINITY-WALKER-
1022 AM CDT WED JUN 9 2010

...SIGNIFICANT WEATHER ADVISORY...

AT 1017 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 19 MILES NORTHWEST OF APPLE SPRINGS...MOVING
NORTHEAST AT 25 MPH.

FUNNEL CLOUDS...WINDS GREATER THAN 40 MPH...CONTINUOUS CLOUD TO
GROUND LIGHTNING...VERY HEAVY DOWNPOURS...ARE POSSIBLE WITH THIS
STORM.

LOCATIONS IN THE PATH OF THIS STORM INCLUDE...WECHES...PENNINGTON...
APPLE SPRINGS...LOVELADY...LATEXO...KENNARD AND CROCKETT.

GUSTY WINDS MAY CAUSE UNSECURED SMALL OBJECTS SUCH AS TRASH CANS TO
BLOW AROUND. AVOID TALL OUTDOOR OBJECTS THAT CAN ATTRACT LIGHTNING
AND DO NOT USE ELECTRICAL APPLIANCES OR A CORDED TELEPHONE A THE
LIGHTNING THREAT HAS PASSED. SEEK SHELTER IN A STURDY STRUCTURE OR
NON-CONVERTIBLE AUTOMOBILE UNTIL THIS STORM HAS PASSED.

A TORNADO WATCH IS IN EFFECT UNTIL 3 PM FOR THE AREA.

A FLOOD WATCH IS IN EFFECT UNTIL 7 PM FOR THE AREA.

LAT...LON 3158 9524 3159 9517 3153 9510 3148 9510
      3147 9506 3145 9504 3144 9500 3115 9486
      3087 9549 3153 9557 3159 9542 3160 9529
      3160 9527
TIME...MOT...LOC 1522Z 206DEG 24KT 3146 9515

The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 9, 4:57 AM CDTFlood WatchHGXAustin, Brazos, Burleson, Colorado, Grimes, Houston and 8 more34 hr
Jun 9, 5:43 AM CDTSpecial Weather StatementHGXGrimes62 min
Jun 9, 7:12 AM CDTTornado WarningHGXGrimes, Montgomery, Walker24 min
Jun 9, 7:57 AM CDTTornado WarningHGXHouston, Madison, Walker33 min
Jun 9, 8:29 AM CDTTornado WarningHGXHouston, Trinity, Walker31 min
Jun 9, 8:58 AM CDTFlash Flood WarningHGXBrazos, Burleson, Grimes, Washington2 hr
Jun 9, 9:07 AM CDTSpecial Weather StatementHGXMadison, Walker53 min
Jun 9, 10:22 AM CDTSpecial Weather StatementHGXHouston, Trinity53 min
Jun 9, 10:40 AM CDTSevere Thunderstorm WarningHGXAustin, Colorado, Washington65 min
Jun 9, 11:42 AM CDTSpecial Weather StatementHGXBrazos63 min
Jun 9, 12:40 PM CDTSevere Thunderstorm WarningHGXGrimes, Montgomery, Walker50 min
Jun 9, 12:46 PM CDTTornado WarningHGXMontgomery29 min
Jun 9, 1:54 PM CDTFlash Flood WarningHGXBrazos, Burleson, Grimes, Madison, Washington111 min
Jun 9, 2:50 PM CDTSevere Thunderstorm WarningHGXLiberty, Polk, San Jacinto40 min
Jun 9, 4:26 PM CDTRiver Flood WarningHGXBurleson, Washington18 hr
Jun 9, 4:26 PM CDTRiver Flood WarningHGXBurleson, Lee18 hr
Jun 9, 4:26 PM CDTRiver Flood WarningHGXBurleson, Lee45 hr
Jun 9, 4:51 PM CDTAreal Flood AdvisoryHGXBrazos, Burleson, Grimes, Madison, Walker114 min
Jun 9, 6:05 PM CDTFlash Flood WarningHGXBrazos, Grimes, Madison, Walker115 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.