Alert archive / Texas / Flash Flood Warnings in 2009

Flash Flood Warning 59, NWS Fort Worth, TX

July 30, 20095 counties in Texas

NWS Fort Worth, TX issued this flash flood warning at Jul 30, 2009, 5:42 AM CDT for 5 counties in Texas. It was in force for 2 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: Jul 30, 2009, 5:42 AM CDT (10:42 UTC)
Expired: Jul 30, 2009, 7:45 AM CDT
In force: 2 hr
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon
Flood severity: None

Counties Dallas County, TX, Denton County, TX, Ellis County, TX, Johnson County, TX, Tarrant County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 26 km from the middle of the area, began a volume at 10:43 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, 10.7 hours before the alert went out and 26 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: 915 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 1329 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 63 m²/s²
0-3 km storm-relative helicity: 136 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

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 Jul 30, 4:51 AM CDT, 51 minutes earlier.

Area forecast discussion, Jul 30, 4:51 AM CDT, 51 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE FORT WORTH TX
451 AM CDT THU JUL 30 2009

.UPDATE...
QUICK UPDATE TO EXPAND WATCH 638 TO THE SOUTHEAST...ADDING 6
COUNTIES. WILL REEVALUATE AGAIN IN A FEW HOURS.

82/JLD

&&

.PREV DISCUSSION... /ISSUED 326 AM CDT THU JUL 30 2009/
MCS MOVING INTO THE NORTHWESTERN PORTIONS OF THE CWA WILL CONTINUE
TO TRACK SOUTH AND SOUTHEAST THIS MORNING. SOME EMBEDDED SEVERE
STORMS WITH DAMAGING WIND WILL CONTINUE TO BE POSSIBLE. HEAVY RAIN
WILL ALSO BE A MAIN THREAT. THE MODELS DO NOT HAVE A GOOD HANDLE
ON THIS EVENT AND ARE TOO SLOW WITH THE SYSTEM. THINK THAT THE MCS
WILL WEAKEN DURING THE MORNING HOURS AS THE LOW LEVEL JET WEAKENS
AFTER DAYBREAK. HOWEVER...GOOD RAINFALL SHOULD AFFECT MUCH OF
NORTH TEXAS BEFORE THE SYSTEM EITHER COMPLETELY DISSIPATES OVER
NORTH TEXAS OR MOVES TO THE EAST.

ANOTHER FRONT WILL MOVE INTO NORTH TEXAS TODAY BEHIND THIS SYSTEM
AND IS FORECAST TO PUSH INTO THE SOUTHERN COUNTIES OF NORTH TEXAS
BEFORE STALLING. WILL KEEP CHANCE POPS ON FRIDAY WITH THIS FRONTAL
BOUNDARY WANDERING AROUND THE REGION AND ADDITIONAL IMPULSES
MOVING OVERHEAD. RAIN CHANCES WILL THEN TAPER OFF FOR THE WEEKEND
AS THE BROAD TROUGH SHIFTS EAST AND AN UPPER LEVEL RIDGE
STRENGTHENS TO OUR WEST.

THE UPPER LEVEL RIDGE WILL REMAIN TO OUR WEST THROUGH TUESDAY AND
THEN BEGIN MOVING EAST ON WEDNESDAY. TEMPERATURES WILL QUICKLY
WARM THIS WEEKEND BUT SHOULD HOLD IN THE 90S AND NEAR 100.
TEMPERATURES BY MID WEEK WILL LIKELY BE WARMER.

82/JLD

&&

.PRELIMINARY POINT TEMPS/POPS...
DALLAS-FT. WORTH, TX  88  72  89  77  94 /  80  30  40  20  20
WACO, TX              92  75  94  78  98 /  80  40  40  20  20
PARIS, TX             85  68  86  74  89 /  80  30  40  20  20
DENTON, TX            87  71  88  74  95 /  70  30  40  20  20
MCKINNEY, TX          84  68  88  72  93 /  80  30  40  20  20
DALLAS, TX            87  74  89  79  95 /  80  30  40  20  20
TERRELL, TX           86  70  89  76  93 /  80  40  40  20  20
CORSICANA, TX         92  74  93  77  94 /  80  40  40  20  20
TEMPLE, TX            93  76  95  77  99 /  70  40  40  20  20

&&

.FWD WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

69/82

Hazardous weather outlook, Jul 30, 3:41 AM CDT, 2 hours 1 minute before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FORT WORTH TX
341 AM CDT THU JUL 30 2009

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-311200-
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-
341 AM CDT THU JUL 30 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...TODAY AND TONIGHT.
A COMPLEX OF THUNDERSTORMS WILL MARCH ACROSS NORTH TEXAS THIS MORNING.
SOME EMBEDDED SEVERE STORMS WILL BE POSSIBLE WITH THIS LINE OF
STORMS. DAMAGING WINDS AND FLASH FLOODING WILL BE THE MAIN THREATS
BUT SMALL HAIL IS ALSO POSSIBLE.

ADDITIONAL THUNDERSTORMS WILL BE POSSIBLE TONIGHT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.
THUNDERSTORM CHANCES WILL CONTINUE FRIDAY ACROSS NORTH TEXAS.
LOCALIZED FLASH FLOODING AND SEVERE WEATHER WILL REMAIN POSSIBLE.

THERE IS ALSO A SLIGHT CHANCE FOR THUNDERSTORMS SATURDAY.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE REQUESTED ALONG THE LINE OF
THUNDERSTORMS THIS MORNING.

82/JLD

In the hours before

Local storm report, Jul 30, 3:10 AM CDT, 2 hours 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
310 AM CDT THU JUL 30 2009

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

0301 AM     FLASH FLOOD      OLNEY                   33.36N  98.76W
07/30/2009                   YOUNG              TX   EMERGENCY MNGR

            HIGHWAY 114 IS IN THE PROCESS OF BEING SHUT DOWN.
            APARTMENTS ON BLUEBONNET RD ARE BEING EVACUATED.

Local storm report, Jul 30, 3:47 AM CDT, 1 hour 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
347 AM CDT THU JUL 30 2009

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

0338 AM     TSTM WND GST     EASTLAND                32.40N  98.82W
07/30/2009  M61 MPH          EASTLAND           TX   BROADCAST MEDIA

            BROADCAST MEDIA REPORTS THAT A WEATHER STATION AT
            EASTLAND MIDDLE SCHOOL MEASURED A 61 MPH WIND GUST.

Special weather statement, Jul 30, 4:04 AM CDT, 1 hour 38 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
404 AM CDT THU JUL 30 2009

TXZ102-103-300930-
WISE TX-DENTON TX-
404 AM CDT THU JUL 30 2009

...SIGNIFICANT WEATHER ADVISORY FOR...
  NORTHWESTERN DENTON COUNTY
  EASTERN WISE COUNTY

AT 404 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 7 MILES NORTHEAST OF
DECATUR TO 4 MILES SOUTHEAST OF DECATUR TO 12 MILES SOUTH OF
BRIDGEPORT...MOVING EAST AT 20 MPH.

CITIES IN THE PATH OF THESE STORMS INCLUDE AURORA...BOYD...DECATUR...
KRUM AND COTTONDALE.

PEA-SIZED HAIL AND WIND GUSTS TO 50 MPH CAN BE EXPECTED FROM THESE
STORMS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 AM CDT
THURSDAY MORNING FOR NORTH CENTRAL TEXAS.

LAT...LON 3314 9721 3300 9751 3300 9790 3301 9792
      3318 9767 3341 9760 3341 9718
TIME...MOT...LOC 0904Z 270DEG 17KT 3332 9752 3318 9756
          3304 9777

85/NH

Special weather statement, Jul 30, 4:33 AM CDT, 1 hour 9 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
433 AM CDT THU JUL 30 2009

TXZ118-301000-
TARRANT TX-
433 AM CDT THU JUL 30 2009

...SIGNIFICANT WEATHER ADVISORY FOR...
  TARRANT COUNTY

AT 431 AM CDT...A SQUALL LINE WAS MOVING EAST TOWARDS WESTERN
PORTIONS OF THE METROPLEX.  THIS LINE OF STRONG TO SEVERE
THUNDERSTORMS LOOKS TO MOVE INTO WESTERN TARRANT COUNTY AROUND 5 AM
CDT.  STAY TUNED TO NOAA WEATHER RADIO OR OTHER MEDIA OUTLETS IN THE
EVENT THAT A WARNING IS ISSUED.

CITIES IN THE PATH OF THIS STORM INCLUDE ARLINGTON...AZLE...
BEDFORD...BENBROOK...BLUE MOUND...COLLEYVILLE...CROWLEY...
DALWORTHINGTON GARDENS...EAGLE MOUNTAIN...EDGECLIFF...EULESS...
EVERMAN...FOREST HILL...FORT WORTH...GRAPEVINE...HALTOM CITY...
HASLET...HURST...KELLER...KENNEDALE...LAKE WORTH...LAKESIDE...
MANSFIELD...NORTH RICHLAND HILLS...PANTEGO...PECAN ACRES...PELICAN
BAY...RENDON...RICHLAND HILLS...RIVER OAKS...SAGINAW...SANSOM PARK...
SOUTHLAKE...WATAUGA...WESTWORTH AND WHITE SETTLEMENT.

VERY HEAVY RAIN AND WIND GUSTS TO 50 MPH ARE LIKELY WITH THIS STORM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 AM CDT
THURSDAY MORNING FOR NORTH CENTRAL TEXAS.

LAT...LON 3299 9703 3256 9703 3256 9754 3290 9755
      3300 9754
TIME...MOT...LOC 0931Z 270DEG 33KT 3293 9770

CAVANAUGH

Local storm report, Jul 30, 4:39 AM CDT, 1 hour 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
439 AM CDT THU JUL 30 2009

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

0434 AM     TSTM WND GST     WEATHERFORD             32.76N  97.77W
07/30/2009  E60 MPH          PARKER             TX   AMATEUR RADIO

            ESTIMATED, SOME POWER OUTAGES IN TOWN.

Local storm report, Jul 30, 5:09 AM CDT, 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
509 AM CDT THU JUL 30 2009

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

0435 AM     TSTM WND GST     GRANBURY                32.44N  97.79W
07/30/2009  E70 MPH          HOOD               TX   LAW ENFORCEMENT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 30, 1:11 AM CDT	Special Weather Statement	FWD	Montague	34 min
Jul 30, 1:16 AM CDT	Special Weather Statement	FWD	Young	29 min
Jul 30, 1:35 AM CDT	Severe Thunderstorm Warning	FWD	Montague	55 min
Jul 30, 1:45 AM CDT	Special Weather Statement	FWD	Young	30 min
Jul 30, 2:19 AM CDT	Flash Flood Warning	FWD	Young	3 hr
Jul 30, 2:20 AM CDT	Special Weather Statement	FWD	Henderson	55 min
Jul 30, 2:36 AM CDT	Flash Flood Warning	FWD	Anderson, Henderson	3 hr
Jul 30, 2:43 AM CDT	Severe Thunderstorm Warning	FWD	Stephens, Young	62 min
Jul 30, 2:56 AM CDT	Areal Flood Advisory	FWD	Jack, Young	3 hr
Jul 30, 3:07 AM CDT	Flash Flood Warning	FWD	Jack, Young	3 hr
Jul 30, 3:13 AM CDT	Severe Thunderstorm Warning	FWD	Eastland	62 min
Jul 30, 3:25 AM CDT	Severe Thunderstorm Warning	FWD	Palo Pinto, Stephens	65 min
Jul 30, 3:50 AM CDT	Areal Flood Advisory	FWD	Wise	115 min
Jul 30, 3:53 AM CDT	Severe Thunderstorm Warning	FWD	Comanche, Eastland, Erath	67 min
Jul 30, 4:00 AM CDT	Severe Thunderstorm Warning	FWD	Palo Pinto, Parker	60 min
Jul 30, 4:04 AM CDT	Special Weather Statement	FWD	Wise	26 min
Jul 30, 4:07 AM CDT	Severe Thunderstorm Warning	FWD	Hood	53 min
Jul 30, 4:13 AM CDT	Tornado Warning	FWD	Parker	47 min
Jul 30, 4:25 AM CDT	Areal Flood Advisory	FWD	Hood, Palo Pinto, Parker, Stephens	3 hr
Jul 30, 4:33 AM CDT	Special Weather Statement	FWD	Tarrant	27 min
Jul 30, 4:36 AM CDT	Severe Thunderstorm Warning	FWD	Bosque, Erath, Hamilton, Hood, Somervell	54 min
Jul 30, 4:38 AM CDT	Severe Thunderstorm Warning	FWD	Johnson, Parker, Tarrant	67 min
Jul 30, 4:45 AM CDT	Tornado Warning	FWD	Tarrant	45 min
Jul 30, 5:05 AM CDT	Severe Thunderstorm Warning	FWD	Bosque, Hill	55 min
Jul 30, 5:06 AM CDT	Areal Flood Advisory	FWD	Denton, Johnson, Tarrant	3 hr
Jul 30, 5:25 AM CDT	Severe Thunderstorm Warning	FWD	Dallas, Ellis, Johnson, Tarrant	65 min
Jul 30, 5:29 AM CDT	Tornado Warning	FWD	Hill	31 min
Jul 30, 5:31 AM CDT	Areal Flood Advisory	FWD	Dallas, Ellis	3 hr
Jul 30, 5:36 AM CDT	Tornado Warning	FWD	Dallas, Ellis	24 min
Jul 30, 5:57 AM CDT	Severe Thunderstorm Warning	FWD	Bosque, Hill, Limestone, McLennan, Navarro	63 min
Jul 30, 5:59 AM CDT	Tornado Warning	FWD	Hill, Navarro	31 min
Jul 30, 6:18 AM CDT	Severe Thunderstorm Warning	FWD	Henderson, Hunt, Kaufman, Rains, Rockwall, Van Zandt	57 min
Jul 30, 6:19 AM CDT	Areal Flood Advisory	FWD	Collin, Kaufman, Rockwall	3 hr
Jul 30, 6:25 AM CDT	Severe Thunderstorm Warning	FWD	Bell, Coryell, Falls, McLennan	65 min
Jul 30, 6:36 AM CDT	Severe Thunderstorm Warning	FWD	Anderson, Falls, Freestone, Henderson, Leon, Limestone and 2 more	54 min
Jul 30, 6:45 AM CDT	Areal Flood Advisory	FWD	Delta, Fannin, Hopkins, Hunt, Lamar, Rains	3 hr
Jul 30, 6:50 AM CDT	Special Weather Statement	FWD	Delta, Fannin, Hopkins, Hunt, Lamar	85 min
Jul 30, 7:14 AM CDT	Special Weather Statement	FWD	Milam, Robertson	31 min
Jul 30, 7:16 AM CDT	Special Weather Statement	FWD	Henderson, Rains, Van Zandt	29 min
Jul 30, 7:25 AM CDT	Areal Flood Advisory	FWD	Henderson, Van Zandt	2 hr

Nearby

Flash Flood Warnings in Texas, 2009 Every 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.