Alert archive / Texas / Flash Flood Warnings in 2009

Flash Flood Warning 19, NWS Fort Worth, TX

April 29, 2009Cooke County, Montague County, Texas

NWS Fort Worth, TX issued this flash flood warning at Apr 29, 2009, 8:32 PM CDT for Cooke County, Montague County, 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
Apr 29, 2009, 8:32 PM CDT (01:32 UTC)
Expired
Apr 29, 2009, 11:30 PM CDT
In force
3 hr
Issued by
NWS Fort Worth, TX
Area
Storm-based polygon
Flood severity
None

Counties Cooke County, TX, Montague County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 122 km from the middle of the area, began a volume at 01:34 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

Fort Worth, TX (KFWD), launched 00:00Z, 1.5 hours before the alert went out and 93 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, Fort Worth, TX at 00:00Z on 2009-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2590 joules per kilogram.LCLEL10008507005003002001001 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, Fort Worth, TX at 00:00Z on 2009-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 240 square meters per square second.19395878Sfc1 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
2590 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
517 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
240 m²/s²
0-3 km storm-relative helicity
296 m²/s²
Significant tornado parameter
5.0
Supercell composite
17.6

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 Fort Worth, TX wrote its last area forecast discussion before this flash flood warning went out at Apr 29, 6:19 PM CDT, 2 hours 13 minutes earlier.

Area forecast discussion, Apr 29, 6:19 PM CDT, 2 hours 13 minutes before
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Hazardous weather outlook, Apr 29, 6:45 PM CDT, 1 hour 47 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FORT WORTH TX
645 PM CDT WED APR 29 2009

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-301200-
MONTAGUE-COOKE-GRAYSON-FANNIN-LAMAR-YOUNG-JACK-WISE-DENTON-COLLIN-
HUNT-DELTA-HOPKINS-STEPHENS-PALO PINTO-PARKER-TARRANT-DALLAS-
ROCKWALL-KAUFMAN-VAN ZANDT-RAINS-EASTLAND-ERATH-HOOD-SOMERVELL-
JOHNSON-ELLIS-HENDERSON-COMANCHE-MILLS-HAMILTON-BOSQUE-HILL-NAVARRO-
FREESTONE-ANDERSON-LAMPASAS-CORYELL-BELL-MCLENNAN-FALLS-LIMESTONE-
LEON-MILAM-ROBERTSON-
645 PM CDT WED APR 29 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...TONIGHT.

THUNDERSTORMS ARE EXPECTED TO CONTINUE ACROSS NORTH TEXAS THROUGH
TONIGHT. THE BEST CHANCE FOR THUNDERSTORMS WILL BE ALONG AND NORTH
OF INTERSTATE 20. FLASH FLOODING FROM HEAVY RAIN AND TRAINING
CELLS IS THE MAIN THREAT THIS EVENING. ISOLATED SEVERE
THUNDERSTORMS ARE POSSIBLE...PRODUCING LARGE HAIL AND DAMAGING
WINDS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

A SLIGHT CHANCE FOR THUNDERSTORMS WILL CONTINUE ALONG AND EAST OF
INTERSTATE 35 ON THURSDAY.

A CHANCE FOR THUNDERSTORMS WILL RETURN FRIDAY NIGHT AND CONTINUE
THROUGH SUNDAY NIGHT AS A COLD FRONT MOVES INTO NORTH TEXAS.
SEVERE WEATHER AND FLASH FLOODING IS POSSIBLE THIS WEEKEND.

.SPOTTER INFORMATION STATEMENT...
LIMITED SPOTTER ACTIVATION MAY BE REQUESTED.

In the hours before

Local storm report, Apr 29, 5:11 PM CDT, 3 hours 21 minutes before
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Local storm report, Apr 29, 5:12 PM CDT, 3 hours 20 minutes before
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Local storm report, Apr 29, 5:26 PM CDT, 3 hours 6 minutes before
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Special weather statement, Apr 29, 6:28 PM CDT, 2 hours 4 minutes before
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Local storm report, Apr 29, 8:14 PM CDT, 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
814 PM CDT WED APR 29 2009

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

0745 PM     FLASH FLOOD      3 NW LEONARD            33.41N  96.28W
04/29/2009                   FANNIN             TX   LAW ENFORCEMENT

            HWY 69 AT FM 981 BETWEEN TRENTON AND LEONARD IS CLOSED
            DUE TO WATER OVER THE ROAD.
Local storm report, Apr 29, 8:16 PM CDT, 16 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
816 PM CDT WED APR 29 2009

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

0747 PM     FLASH FLOOD      SHERMAN                 33.62N  96.61W
04/29/2009                   GRAYSON            TX   LAW ENFORCEMENT

            WIDESPREAD FLASH FLOODING CONTINUES ACROSS THE COUNTY.
            PARTS OF HWY 56 AND HWY 11 ARE CLOSED DUE TO WATER OVER
            THE ROADS.

The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 29, 7:12 PM CDTAreal Flood AdvisoryFWDHopkins, Hunt2 hr
Apr 29, 8:12 PM CDTRiver Flood WarningFWDHunt48 hr
Apr 29, 8:59 PM CDTFlash Flood WarningFWDFannin, Grayson3 hr
Apr 29, 9:47 PM CDTSpecial Weather StatementFWDMontague58 min
Apr 29, 9:48 PM CDTSpecial Weather StatementFWDMontague57 min
Apr 29, 10:44 PM CDTRiver Flood WarningFWDCooke11 hr
Apr 29, 11:20 PM CDTFlash Flood WarningFWDCooke, Montague6 hr
Apr 29, 11:40 PM CDTFlash Flood WarningFWDGrayson6 hr
Apr 29, 11:45 PM CDTSevere Thunderstorm WarningFWDMontague60 min
Apr 30, 12:26 AM CDTSevere Thunderstorm WarningFWDJack, Young64 min
Apr 30, 12:34 AM CDTRiver Flood WarningFWDCollin33 hr
Apr 30, 12:34 AM CDTRiver Flood WarningFWDCollin25 hr
Apr 30, 12:42 AM CDTSevere Thunderstorm WarningFWDMontague50 min
Apr 30, 12:50 AM CDTSevere Thunderstorm WarningFWDWise55 min
Apr 30, 1:11 AM CDTSevere Thunderstorm WarningFWDWise44 min
Apr 30, 1:42 AM CDTSpecial Weather StatementFWDDenton48 min
Apr 30, 1:52 AM CDTSpecial Weather StatementFWDJack23 min
Apr 30, 2:17 AM CDTSevere Thunderstorm WarningFWDJack36 min
Apr 30, 2:48 AM CDTSpecial Weather StatementFWDWise27 min
Apr 30, 2:59 AM CDTSevere Thunderstorm WarningFWDWise61 min
Apr 30, 3:19 AM CDTSpecial Weather StatementFWDHunt, Rains, Rockwall26 min
Apr 30, 3:49 AM CDTSpecial Weather StatementFWDDenton26 min
Apr 30, 3:53 AM CDTSpecial Weather StatementFWDJack37 min
Apr 30, 4:18 AM CDTSpecial Weather StatementFWDDenton27 min
Apr 30, 4:29 AM CDTSpecial Weather StatementFWDJack31 min
Apr 30, 4:45 AM CDTSpecial Weather StatementFWDCollin30 min
Apr 30, 4:54 AM CDTSevere Thunderstorm WarningFWDWise66 min
Apr 30, 5:00 AM CDTSpecial Weather StatementFWDDenton, Tarrant2 hr
Apr 30, 5:11 AM CDTAreal Flood WarningFWDCooke, Grayson, Montague6 hr
Apr 30, 5:23 AM CDTSpecial Weather StatementFWDDenton22 min
Apr 30, 5:37 AM CDTSpecial Weather StatementFWDTarrant23 min
Apr 30, 6:00 AM CDTSpecial Weather StatementFWDDallas, Rockwall90 min
Apr 30, 6:20 AM CDTSpecial Weather StatementFWDCollin55 min
Apr 30, 6:38 AM CDTSpecial Weather StatementFWDDallas22 min

Nearby

Flash Flood Warnings in Texas, 2009Every flash flood warning in 2009

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.