Alert archive / Texas / Flash Flood Warnings in 2009

Flash Flood Warning 35, NWS Fort Worth, TX

May 3, 2009Rains County, Van Zandt County, Texas

NWS Fort Worth, TX issued this flash flood warning at May 3, 2009, 5:03 AM CDT for Rains County, Van Zandt 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
May 3, 2009, 5:03 AM CDT (10:03 UTC)
Expired
May 3, 2009, 8:00 AM CDT
In force
3 hr
Issued by
NWS Fort Worth, TX
Area
Storm-based polygon
Flood severity
None

Counties Rains County, TX, Van Zandt County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 140 km from the middle of the area, began a volume at 10:03 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, 10.1 hours before the alert went out and 139 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 2009-05-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 402 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, Fort Worth, TX at 00:00Z on 2009-05-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 127 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
402 J/kg
Mixed-layer CIN
-141 J/kg
Mixed-layer LCL
497 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
127 m²/s²
0-3 km storm-relative helicity
194 m²/s²
Significant tornado parameter
0.0
Supercell composite
8.6

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 May 3, 3:47 AM CDT, 1 hour 16 minutes earlier.

Area forecast discussion, May 3, 3:47 AM CDT, 1 hour 16 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FORT WORTH TX
347 AM CDT SUN MAY 3 2009

.DISCUSSION...
SECOND SHORTWAVE DISTURBANCE NOW ENCOUNTERING BETTER MOISTURE AND STILL
PLENTY OF ELEVATED INSTABILITY ACROSS CENTRAL/ERN TEXAS...AS EVIDENCED
BY FLARE OF OF STORMS ACROSS THE AREA AFTER 2 AM CDT. MEANWHILE...WEAK
FRONTAL BOUNDARY IS NOW ALONG A PARIS...TERRELL...CORSICANA...MEXIA...
KILLEEN LINE. EXPECT SEVERE THREAT THIS MORNING TO BE MARGINAL SEVERE
HAIL BEHIND THE BOUNDARY...THOUGH A SEVERE WATCH COULD BE ISSUED IN
NEXT HR OR SO AHEAD OF FRONTAL BOUNDARY WHERE SOME STRONG/DAMAGING
WINDS COULD MIX DOWN IN MORE WARM/SOUPY AIRMASS OVER SE COUNTIES. AS
FOR HYDROLOGIC ISSUES...HAVE CANCELLED FFA W OF I-35 CORRIDOR...AS
ANTECEDENT CONDITIONS ARE GOOD AND MOST OF MORNING STORMS SHOULD BE
TO THE SE OF THESE COUNTIES. LEFT AREAS FURTHER EAST IN FFA THROUGH
LATE MORNING WITH MORE SATURATED SOILS AND POSSIBLE LINGERING STORMS
WITH LOCALIZED HEAVY RAINFALL THROUGH MID MORNING.

EXPECT WEATHER TO IMPROVE QUICKLY FROM WEST TO EAST ACROSS NORTH TX
BY THIS AFTERNOON AND INTO EARLY EVENING...AS DISTURBANCE SHIFTS EAST
OF THE REGION WITH SUBSIDENCE IN BEHIND AND FRONT SAGGING E/SE OF THE
AREA. TONIGHT THROUGH MONDAY WILL SEE A BRIEF DRY PERIOD. OLD FRONT
MOVES BACK NWD AS A WARM FRONT AND HANGS UP ACROSS RED RIVER VALLEY/SRN
OK TUES-WED...WITH A FEW DISTURBANCES RIPPLING ACROSS OK/KS LATE MON
NIGHT THROUGH WED MORNING. WILL MAINTAIN CHANCE POPS NORTH OF I-20 CORRIDOR
DURING THIS PERIOD. MANY OF THESE AREAS DONT NEED ADDITIONAL RAINFALL
AND FUTURE HYDROLOGIC WATCHES MAY BE NEED FOR THE TUES/WED TIME FRAME.
INSTABILITY AND SHEAR ACROSS THIS REGION WILL SUPPORT A FEW SEVERE STORMS
AS WELL.

SHORTWAVE RIDGING WILL PROVIDE ANOTHER RESPITE/DRY PERIOD THURS THROUGH
FRIDAY EVENING...BEFORE ANOTHER WEAK FRONT EASES INTO NORTH TEXAS AND
PROVIDES A WEAK FOCUS FOR A FEW MORE STORMS.

05/

&&

.PRELIMINARY POINT TEMPS/POPS...
DALLAS-FT. WORTH, TX  71  54  75  61  83 /  20   5   5  20  20
WACO, TX              76  56  76  64  88 /  40   5   5   5   5
PARIS, TX             68  52  72  57  78 /  60   5   5  20  40
DENTON, TX            69  50  74  60  79 /  20   5   5  20  30
MCKINNEY, TX          70  54  74  59  81 /  30   5   5  20  30
DALLAS, TX            72  55  75  62  83 /  30   5   5  20  20
TERRELL, TX           72  56  74  60  83 /  50   5   5  10  20
CORSICANA, TX         74  57  76  60  85 /  70   5   5   5  10
TEMPLE, TX            78  58  78  65  88 /  40   5   5   5   5

&&

.FWD WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH UNTIL NOON CDT TODAY FOR TXZ092>095-103>107-
118>123.

&&

/05
Hazardous weather outlook, May 3, 3:22 AM CDT, 1 hour 41 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FORT WORTH TX
322 AM CDT SUN MAY 3 2009

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-041100-
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-
322 AM CDT SUN MAY 3 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...TODAY AND TONIGHT.
STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE TODAY. LARGE
HAIL...DAMAGING WINDS...AND HEAVY RAINFALL ARE THE MAIN HAZARDS.

A FLASH FLOOD WATCH IS IN EFFECT FOR AREAS ALONG AND NORTH OF
INTERSTATE 20 AND ALONG AND EAST OF INTERSTATE 35 THROUGH NOON.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.
THUNDERSTORMS ARE POSSIBLE TUESDAY AND WEDNESDAY...AND AGAIN ON
FRIDAY AND SATURDAY. SEVERE WEATHER IS POSSIBLE WITH EACH EVENT.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS LIKELY TODAY ALONG AND EAST OF A GAINESVILLE
TO COMANCHE LINE.

SCHULTZ

In the hours before

Special weather statement, May 3, 3:30 AM CDT, 1 hour 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
330 AM CDT SUN MAY 3 2009

TXZ104-119-030900-
COLLIN TX-DALLAS TX-
330 AM CDT SUN MAY 3 2009

...SIGNIFICANT WEATHER ADVISORY FOR...
  SOUTHERN COLLIN COUNTY
  DALLAS COUNTY

AT 329 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM FRISCO TO 2 MILES
NORTHEAST OF ARLINGTON...MOVING EAST AT 25 MPH.

CITIES IN THE PATH OF THESE STORMS INCLUDE ADDISON...ALLEN...
CARROLLTON...DALLAS...DESOTO...DUNCANVILLE...FRISCO...GARLAND...GRAND
PRAIRIE...IRVING...ROWLETT...UNIVERSITY PARK...WILMER AND WYLIE.

WIND GUSTS TO 40 MPH AND HAIL TO 1/2 INCH IN DIAMETER CAN BE EXPECTED
FROM THESE STORMS.

LAT...LON 3319 9641 3299 9650 3298 9652 3296 9651
      3255 9670 3263 9702 3284 9703 3300 9694
      3300 9684 3316 9684 3320 9682
TIME...MOT...LOC 0829Z 292DEG 23KT 3314 9680 3273 9707
Local storm report, May 3, 3:32 AM CDT, 1 hour 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
332 AM CDT SUN MAY 03 2009

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

0315 AM     HAIL             SOUTHLAKE               32.95N  97.15W
05/03/2009  E0.75 INCH       TARRANT            TX   TRAINED SPOTTER

            PENNY HAIL REPORTED AT HWY 114 AND KIMBALL IN SOUTHLAKE
Local storm report, May 3, 4:08 AM CDT, 55 minutes before
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Special weather statement, May 3, 4:16 AM CDT, 47 minutes before
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Special weather statement, May 3, 4:41 AM CDT, 22 minutes before
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Special weather statement, May 3, 4:47 AM CDT, 16 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 2, 7:09 PM CDTSevere Thunderstorm WarningFWDDelta, Hopkins, Hunt, Rains, Van Zandt66 min
May 2, 7:13 PM CDTSevere Thunderstorm WarningFWDDenton62 min
May 2, 7:24 PM CDTFlash Flood WarningFWDDenton3 hr
May 2, 7:42 PM CDTFlash Flood WarningFWDHopkins, Rains, Van Zandt3 hr
May 2, 8:27 PM CDTSevere Thunderstorm WarningFWDDenton, Parker, Tarrant, Wise63 min
May 2, 8:48 PM CDTFlash Flood WarningFWDTarrant107 min
May 2, 8:49 PM CDTRiver Flood WarningFWDHunt37 hr
May 2, 8:49 PM CDTRiver Flood WarningFWDHunt, Rockwall43 hr
May 2, 8:59 PM CDTSevere Thunderstorm WarningFWDEllis, Hill46 min
May 2, 9:20 PM CDTRiver Flood WarningFWDCollin37 hr
May 2, 9:20 PM CDTRiver Flood WarningFWDDallas39 hr
May 2, 9:24 PM CDTFlash Flood WarningFWDGrayson83 min
May 2, 9:29 PM CDTSevere Thunderstorm WarningFWDHunt, Kaufman, Rains, Van Zandt46 min
May 2, 9:36 PM CDTSpecial Weather StatementFWDCollin, Denton, Rockwall24 min
May 2, 9:39 PM CDTFlash Flood WarningFWDDallas2 hr
May 2, 9:41 PM CDTAreal Flood AdvisoryFWDEllis94 min
May 2, 9:46 PM CDTSevere Thunderstorm WarningFWDDallas, Ellis48 min
May 2, 9:58 PM CDTSevere Thunderstorm WarningFWDCollin, Dallas, Fannin, Grayson, Rockwall32 min
May 2, 10:09 PM CDTSevere Thunderstorm WarningFWDKaufman, Rockwall66 min
May 2, 10:14 PM CDTSevere Thunderstorm WarningFWDFannin, Hunt61 min
May 2, 10:26 PM CDTAreal Flood WarningFWDDenton4 hr
May 2, 10:37 PM CDTFlash Flood WarningFWDHopkins, Rains, Van Zandt3 hr
May 2, 10:44 PM CDTSevere Thunderstorm WarningFWDDelta, Hopkins, Lamar, Rains76 min
May 2, 10:50 PM CDTAreal Flood AdvisoryFWDDelta, Fannin, Lamar3 hr
May 2, 10:56 PM CDTFlash Flood WarningFWDCollin, Hunt, Kaufman, Rockwall2 hr
May 2, 10:57 PM CDTRiver Flood WarningFWDDenton11 hr
May 2, 11:07 PM CDTSpecial Weather StatementFWDVan Zandt38 min
May 2, 11:27 PM CDTRiver Flood WarningFWDDallas9 hr
May 2, 11:38 PM CDTAreal Flood WarningFWDDallas3 hr
May 2, 11:43 PM CDTRiver Flood WarningFWDDallas9 hr
May 2, 11:50 PM CDTSpecial Weather StatementFWDVan Zandt25 min
May 3, 12:53 AM CDTSpecial Weather StatementFWDHopkins22 min
May 3, 1:05 AM CDTSpecial Weather StatementFWDHunt25 min
May 3, 1:32 AM CDTAreal Flood WarningFWDHopkins, Rains, Van Zandt3 hr
May 3, 1:50 AM CDTRiver Flood WarningFWDDelta, Hopkins21 hr
May 3, 2:13 AM CDTSpecial Weather StatementFWDComanche32 min
May 3, 2:29 AM CDTAreal Flood WarningFWDDallas4 hr
May 3, 2:36 AM CDTRiver Flood WarningFWDCollin19 hr
May 3, 2:38 AM CDTSevere Thunderstorm WarningFWDHood, Johnson, Parker, Tarrant49 min
May 3, 2:40 AM CDTSpecial Weather StatementFWDKaufman35 min
May 3, 2:44 AM CDTSpecial Weather StatementFWDBosque31 min
May 3, 3:00 AM CDTSevere Thunderstorm WarningFWDMills37 min
May 3, 3:05 AM CDTSpecial Weather StatementFWDCollin25 min
May 3, 3:07 AM CDTSpecial Weather StatementFWDBosque23 min
May 3, 3:30 AM CDTSpecial Weather StatementFWDDallas30 min
May 3, 3:42 AM CDTSevere Thunderstorm WarningFWDLampasas32 min
May 3, 3:53 AM CDTSevere Thunderstorm WarningFWDEllis, Hill, Navarro67 min
May 3, 3:56 AM CDTFlash Flood WarningFWDCollin, Dallas, Rockwall2 hr
May 3, 4:16 AM CDTSpecial Weather StatementFWDBell, McLennan29 min
May 3, 4:20 AM CDTFlash Flood WarningFWDHunt, Kaufman3 hr
May 3, 4:41 AM CDTSpecial Weather StatementFWDKaufman, Rains, Van Zandt34 min
May 3, 4:47 AM CDTSpecial Weather StatementFWDFalls, Freestone, Limestone, Milam, Robertson28 min
May 3, 5:09 AM CDTSevere Thunderstorm WarningFWDHenderson, Van Zandt51 min
May 3, 5:13 AM CDTSevere Thunderstorm WarningFWDAnderson, Falls, Freestone, Leon, Limestone, Milam and 2 more92 min
May 3, 6:00 AM CDTSevere Thunderstorm WarningFWDHenderson41 min
May 3, 7:19 AM CDTAreal Flood WarningFWDHunt4 hr
May 3, 7:59 AM CDTAreal Flood WarningFWDRains, Van Zandt4 hr
May 3, 9:52 AM CDTRiver Flood WarningFWDHenderson, Navarro5 days

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.