Alert archive / Texas / Flash Flood Warnings in 2008

Flash Flood Warning 18, NWS Fort Worth, TX

April 9, 2008Cooke County, Grayson County, Texas

NWS Fort Worth, TX issued this flash flood warning at Apr 9, 2008, 9:35 PM CDT for Cooke County, Grayson County, Texas. It was in force for 115 min. 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 9, 2008, 9:35 PM CDT (02:35 UTC)
Expired: Apr 9, 2008, 11:30 PM CDT
In force: 115 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon
Flood severity: None

Counties Cooke County, TX, Grayson County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 123 km from the middle of the area, began a volume at 02:37 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, 2.6 hours before the alert went out and 95 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2061 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 537 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 237 m²/s²
0-3 km storm-relative helicity: 337 m²/s²
Significant tornado parameter: 4.9
Supercell composite: 22.7

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 9, 9:19 PM CDT, 16 minutes earlier.

Area forecast discussion, Apr 9, 9:19 PM CDT, 16 minutes before

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Hazardous weather outlook, Apr 9, 9:25 PM CDT, 10 minutes before

HAZARDOUS WEATHER OUTLOOK FOR NORTH TEXAS...UPDATED
NATIONAL WEATHER SERVICE FORT WORTH TX
925 PM CDT WED APR 9 2008

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-101100-
ANDERSON-BELL-BOSQUE-COLLIN-COMANCHE-COOKE-CORYELL-DALLAS-DELTA-
DENTON-EASTLAND-ELLIS-ERATH-FALLS-FANNIN-FREESTONE-GRAYSON-HAMILTON-
HENDERSON-HILL-HOOD-HOPKINS-HUNT-JACK-JOHNSON-KAUFMAN-LAMAR-LAMPASAS-
LEON-LIMESTONE-MCLENNAN-MILAM-MILLS-MONTAGUE-NAVARRO-PALO PINTO-
PARKER-RAINS-ROBERTSON-ROCKWALL-SOMERVELL-STEPHENS-TARRANT-VAN ZANDT-
WISE-YOUNG-
925 PM CDT WED APR 9 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...TODAY AND TONIGHT.
THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS NAMELY THOSE
AREAS OF NORTH TEXAS CLOSE TO A SURFACE WARM FRONT NORTH OF
INTERSTATE 20 AND NEAR THE RED RIVER. MAIN HAZARDS THROUGH TONIGHT
WILL BE VERY LARGE HAIL...DAMAGING WINDS...LOCALLY HEAVY RAINFALL
AND A FEW ISOLATED TORNADOES WILL BE POSSIBLE NEAR THESE AREAS.

ELSEWHERE...THUNDERSTORMS WILL CONTINUE TO DEVELOP INTO A SQUALL LINE
OVER WEST TEXAS THROUGH MIDNIGHT...THEN SPREAD EAST INTO NORTH TEXAS
AFTER MIDNIGHT AND THROUGH DAYBREAK THURSDAY MORNING. LARGE HAIL...
HEAVY RAINFALL...FREQUENT LIGHTNING AND WINDS IN EXCESS OF 60 MPH
ARE ALL POSSIBLE WITH THIS ACTIVITY LATE TONIGHT.

A FLASH FLOOD WATCH IS IN EFFECT FOR AREAS ALONG AND NORTH OF
INTERSTATE 20 THROUGH THURSDAY MORNING. ADDITIONAL RAINFALL AMOUNTS
OF 1 TO 3 INCHES WILL BE LIKELY...WITH ISOLATED AMOUNTS UP TO 4
INCHES POSSIBLE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH MONDAY.
A LINE OF STRONG TO SEVERE THUNDERSTORMS IS EXPECTED EARLY THURSDAY
MORNING ALONG AND AHEAD OF AN EASTWARD MOVING COLD FRONT. THE SEVERE
WEATHER THREAT INCLUDES FREQUENT LIGHTNING...DAMAGING WINDS...
AND LARGE HAIL.

THE SEVERE WEATHER THREAT WILL END FROM WEST TO EAST BY THURSDAY
AFTERNOON.

BEHIND THE COLD FRONT...STRONG WESTERLY WINDS OF 25 TO 30 MPH...WITH
GUSTS TO 40 MPH ARE EXPECTED THURSDAY AFTERNOON.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL LIKELY BE NEEDED ACROSS MUCH OF NORTH TEXAS
THROUGH THE OVERNIGHT.

05/

In the hours before

Special weather statement, Apr 9, 7:33 PM CDT, 2 hours 2 minutes before

SPECIAL WEATHER STATEMENT...CORRECTION TO TIME IN 1ST PARA
NATIONAL WEATHER SERVICE FORT WORTH TX
733 PM CDT WED APR 9 2008

TXZ092-103-100100-
COOKE TX-DENTON TX-
733 PM CDT WED APR 9 2008

...SIGNIFICANT WEATHER ADVISORY FOR...
  SOUTHERN COOKE COUNTY
  DENTON COUNTY

AT 733 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
VERY DANGEROUS SEVERE THUNDERSTORM OVER DECATUR...MOVING NORTHEAST
AT 39 MPH. ON ITS PRESENT COURSE...THIS STORM WILL ENTER SOUTHERN
COOKE AND WESTERN DENTON COUNTIES AFTER 755 PM...AND WILL CROSS
INTERSTATE 35 BETWEEN DENTON AND GAINESVILLE BETWEEN 8 PM AND 830 PM.

THIS STORM HAS A HISTORY OF DAMAGING TORNADOES...BASEBALL-SIZE HAIL
AND DESTRUCTIVE STRAIGHT-LINE WINDS. A SEVERE WEATHER WARNING WILL
BE ISSUED FOR PORTIONS OF COOKE AND DENTON COUNTIES AS THIS STORM
APPROACHES.

CITIES IN THE PATH OF THIS STORM INCLUDE ARGYLE...AUBREY...CORINTH...
CROSS ROADS...DENTON...GAINESVILLE...HACKBERRY...KRUGERVILLE...
KRUM...LAKE DALLAS...LINDSAY...LITTLE ELM...PILOT POINT...SANGER...
SHADY SHORES...RAY ROBERTS PARK ISLE DU BOIS...RAY ROBERTS PARK
JOHNSON BRANCH AND LAKE LEWISVILLE.

TAKE PRECAUTIONS NOW TO PREPARE FOR THE APPROACH OF THIS STORM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT WEDNESDAY EVENING
FOR NORTHEASTERN TEXAS.

LAT...LON 3371 9695 3357 9692 3356 9693 3343 9693
      3342 9690 3312 9684 3311 9737 3361 9740
TIME...MOT...LOC 0033Z 240DEG 34KT 3324 9759

07/BB

Local storm report, Apr 9, 7:35 PM CDT, 2 hours before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
735 PM CDT WED APR 09 2008

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

0655 PM     TSTM WND DMG     5 E GRAFORD             32.94N  98.16W
04/09/2008                   PALO PINTO         TX   BROADCAST MEDIA

            DAMAGE IN ORAN AT ORAN AND JOHNSON ROADS. POSSIBLE
            TORNADO DAMAGE. RELAYED BY MEDIA

Local storm report, Apr 9, 7:36 PM CDT, 1 hour 59 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
736 PM CDT WED APR 09 2008

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

0736 PM     HAIL             DECATUR                 33.23N  97.59W
04/09/2008  E1.00 INCH       WISE               TX   AMATEUR RADIO

            IN DECATUR

Local storm report, Apr 9, 7:48 PM CDT, 1 hour 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
748 PM CDT WED APR 09 2008

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

0738 PM     HAIL             5 SE BRIDGEPORT         33.16N  97.70W
04/09/2008  E2.75 INCH       WISE               TX   PUBLIC

            BASEBALL SIZE HAIL

Local storm report, Apr 9, 7:50 PM CDT, 1 hour 45 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE FORT WORTH TX
750 PM CDT WED APR 09 2008

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

0720 PM     HAIL             5 SE BRIDGEPORT         33.16N  97.70W
04/09/2008  E2.75 INCH       WISE               TX   PUBLIC

            BASEBALL HAIL NEAR BALSORA. CORRECTED TIME.

Local storm report, Apr 9, 8:01 PM CDT, 1 hour 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
801 PM CDT WED APR 09 2008

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

0752 PM     HAIL             DECATUR                 33.23N  97.59W
04/09/2008  E2.50 INCH       WISE               TX   AMATEUR RADIO

            REPORTED BY AMATEUR RADIO SPOTTERS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 7:13 PM CDT	Tornado Warning	FWD	Jack, Wise	47 min
Apr 9, 7:14 PM CDT	Special Weather Statement	FWD	Fannin	31 min
Apr 9, 7:33 PM CDT	Special Weather Statement	FWD	Cooke, Denton	27 min
Apr 9, 7:48 PM CDT	Tornado Warning	FWD	Denton, Wise	42 min
Apr 9, 8:22 PM CDT	Tornado Warning	FWD	Cooke, Denton	38 min
Apr 9, 8:57 PM CDT	Tornado Warning	FWD	Cooke, Grayson	53 min
Apr 10, 1:00 AM CDT	Severe Thunderstorm Warning	FWD	Stephens	60 min
Apr 10, 1:19 AM CDT	Severe Thunderstorm Warning	FWD	Young	56 min
Apr 10, 1:29 AM CDT	Wind Advisory	FWD	Anderson, Bell, Bosque, Collin, Comanche, Cooke and 40 more	18 hr
Apr 10, 1:39 AM CDT	Severe Thunderstorm Warning	FWD	Eastland	53 min
Apr 10, 2:00 AM CDT	Severe Thunderstorm Warning	FWD	Comanche	46 min
Apr 10, 2:10 AM CDT	River Flood Warning	FWD	Denton	32 hr
Apr 10, 2:10 AM CDT	River Flood Warning	FWD	Dallas	43 hr
Apr 10, 2:11 AM CDT	Special Weather Statement	FWD	Jack	34 min
Apr 10, 2:14 AM CDT	Severe Thunderstorm Warning	FWD	Palo Pinto	46 min
Apr 10, 2:21 AM CDT	Severe Thunderstorm Warning	FWD	Erath	39 min
Apr 10, 2:25 AM CDT	Special Weather Statement	FWD	Cooke	35 min
Apr 10, 2:28 AM CDT	Tornado Warning	FWD	Erath	25 min
Apr 10, 2:35 AM CDT	Flash Flood Warning	FWD	Cooke	4 hr
Apr 10, 2:36 AM CDT	Severe Thunderstorm Warning	FWD	Parker	39 min
Apr 10, 2:41 AM CDT	Severe Thunderstorm Warning	FWD	Hood, Somervell	39 min
Apr 10, 2:47 AM CDT	Severe Thunderstorm Warning	FWD	Bosque, Hamilton	43 min
Apr 10, 3:00 AM CDT	Tornado Warning	FWD	Somervell	15 min
Apr 10, 3:03 AM CDT	Severe Thunderstorm Warning	FWD	Johnson, Parker, Tarrant	57 min
Apr 10, 3:06 AM CDT	Severe Thunderstorm Warning	FWD	Lampasas	39 min
Apr 10, 3:10 AM CDT	Tornado Warning	FWD	Johnson	35 min
Apr 10, 3:16 AM CDT	Severe Thunderstorm Warning	FWD	Denton, Wise	44 min
Apr 10, 3:18 AM CDT	Severe Thunderstorm Warning	FWD	Hill	57 min
Apr 10, 3:26 AM CDT	Severe Thunderstorm Warning	FWD	Dallas, Ellis	64 min
Apr 10, 3:32 AM CDT	Tornado Warning	FWD	Ellis, Johnson, Tarrant	28 min
Apr 10, 3:39 AM CDT	Tornado Warning	FWD	Collin, Dallas	36 min
Apr 10, 3:42 AM CDT	Severe Thunderstorm Warning	FWD	Collin	63 min
Apr 10, 3:51 AM CDT	Special Weather Statement	FWD	Bell	24 min
Apr 10, 3:56 AM CDT	Tornado Warning	FWD	Bell, Falls, Milam	49 min
Apr 10, 3:59 AM CDT	Severe Thunderstorm Warning	FWD	Grayson	31 min
Apr 10, 4:04 AM CDT	Severe Thunderstorm Warning	FWD	Bell, Falls, Hill, Limestone, McLennan	56 min
Apr 10, 4:08 AM CDT	Severe Thunderstorm Warning	FWD	Kaufman, Rockwall	67 min
Apr 10, 4:15 AM CDT	Severe Thunderstorm Warning	FWD	Fannin, Hunt	60 min
Apr 10, 4:16 AM CDT	Tornado Warning	FWD	Bell, Falls	44 min
Apr 10, 4:23 AM CDT	Severe Thunderstorm Warning	FWD	Ellis, Henderson, Navarro	67 min
Apr 10, 4:48 AM CDT	Severe Thunderstorm Warning	FWD	Anderson, Freestone	72 min
Apr 10, 4:51 AM CDT	Severe Thunderstorm Warning	FWD	Delta, Hopkins, Lamar	54 min
Apr 10, 4:58 AM CDT	Severe Thunderstorm Warning	FWD	Limestone	47 min
Apr 10, 5:00 AM CDT	River Flood Warning	FWD	Wise	52 hr
Apr 10, 5:12 AM CDT	Severe Thunderstorm Warning	FWD	Rains, Van Zandt	63 min
Apr 10, 5:22 AM CDT	Tornado Warning	FWD	Anderson, Freestone	38 min
Apr 10, 5:23 AM CDT	Severe Thunderstorm Warning	FWD	Henderson	52 min
Apr 10, 5:46 AM CDT	Severe Thunderstorm Warning	FWD	Hopkins	29 min
Apr 10, 5:59 AM CDT	River Flood Warning	FWD	Dallas	91 min
Apr 10, 6:19 AM CDT	Special Weather Statement	FWD	Milam, Robertson	26 min
Apr 10, 6:24 AM CDT	Special Weather Statement	FWD	Henderson	36 min
Apr 10, 6:34 AM CDT	Severe Thunderstorm Warning	FWD	Falls, Limestone, Robertson	30 min
Apr 10, 9:53 AM CDT	River Flood Warning	FWD	Hunt	34 hr

Nearby

Flash Flood Warnings in Texas, 2008 Every flash flood warning in 2008

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.