Alert archive / Texas / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 191, NWS Fort Worth, TX

May 8, 2007Dallas County, Tarrant County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at May 8, 2007, 9:52 PM CDT for Dallas County, Tarrant County, Texas. It was in force for 53 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
May 8, 2007, 9:52 PM CDT (02:52 UTC)
Expired
May 8, 2007, 10:45 PM CDT
In force
53 min
Issued by
NWS Fort Worth, TX
Area
Counties, with a storm outline in the text

Counties Dallas County, TX, Tarrant County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 33 km from the middle of the area, began a volume at 02:52 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, 2.9 hours before the alert went out and 25 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 2007-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1069 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 2007-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 square meters per square second.1939Sfc1 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
1069 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
1302 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
57 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at May 8, 8:27 PM CDT, 1 hour 25 minutes earlier.

Area forecast discussion, May 8, 8:27 PM CDT, 1 hour 25 minutes before
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Hazardous weather outlook, May 8, 8:12 PM CDT, 1 hour 40 minutes before
HAZARDOUS WEATHER OUTLOOK FOR NORTH TEXAS
NATIONAL WEATHER SERVICE FORT WORTH TX
812 PM CDT TUE MAY 8 2007

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-091100-
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-
812 PM CDT TUE MAY 8 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...

SEVERE THUNDERSTORMS WILL BE POSSIBLE OVERNIGHT...MAINLY
NORTH OF INTERSTATE 20. HAIL UP TO THE SIZE OF
QUARTERS...DAMAGING WINDS TO 60 MPH...AND FREQUENT LIGHTNING WILL
BE THE MAIN HAZARDS. IN ADDITION...ALONG AND NORTH OF A
JACKSBORO...DENTON...TO PARIS LINE THERE IS A SLIGHT THREAT FOR
TORNADOES AS WELL. HEAVY RAINFALL WILL ALSO BE LIKELY...WITH FLASH
FLOODING POSSIBLE.

A FLASH FLOOD WATCH IS IN EFFECT TONIGHT THROUGH WEDNESDAY NIGHT
ALONG AND NORTHWEST OF COMANCHE TO DALLAS TO BONHAM LINE.

.DAYS TWO THROUGH SEVEN...

SEVERE THUNDERSTORMS WILL BE POSSIBLE AGAIN WEDNESDAY AFTERNOON
AND EVENING...WITH LARGE HAIL AND DAMAGING WINDS AS THE MAIN HAZARDS.

THUNDERSTORM CHANCES WILL CONTINUE THROUGH MONDAY.
HOWEVER...THUNDERSTORM CHANCES WILL SHIFT INTO EAST AND SOUTHEAST
PORTIONS OF THE OUTLOOK AREA SATURDAY THROUGH MONDAY.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL LIKELY BE NEEDED OVERNIGHT...ESPECIALLY NORTH
OF INTERSTATE 20.

In the hours before

Special weather statement, May 8, 7:50 PM CDT, 2 hours 2 minutes before
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Special weather statement, May 8, 8:10 PM CDT, 1 hour 42 minutes before
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Special weather statement, May 8, 9:07 PM CDT, 45 minutes before
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Special weather statement, May 8, 9:21 PM CDT, 31 minutes before
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Special weather statement, May 8, 9:42 PM CDT, 10 minutes before
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Special weather statement, May 8, 9:47 PM CDT, 5 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
947 PM CDT TUE MAY 8 2007

TXZ148-090315-
ANDERSON TX-
947 PM CDT TUE MAY 8 2007

...SIGNIFICANT WEATHER ADVISORY FOR...
  SOUTHERN AND CENTRAL ANDERSON COUNTY

AT 947 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 9 MILES SOUTH OF PALESTINE...MOVING NORTH AT 20
MPH.

CITIES IN THE PATH OF THIS STORM INCLUDE ELKHART AND PALESTINE.

HAIL TO ONE HALF INCH DIAMETER...VERY HEAVY RAIN...AND WIND GUSTS TO
50 MPH ARE LIKELY WITH THIS STORM.

IF THIS STORM INTENSIFIES...A SEVERE WEATHER WARNING MAY BE NEEDED.

LAT...LON 3156 9574 3161 9535 3188 9547 3183 9591

The office that day

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

IssuedProductOfficeCountiesLasted
May 8, 7:10 PM CDTSevere Thunderstorm WarningFWDYoung35 min
May 8, 7:20 PM CDTSpecial Weather StatementFWDJack55 min
May 8, 7:50 PM CDTSpecial Weather StatementFWDPalo Pinto40 min
May 8, 8:10 PM CDTSpecial Weather StatementFWDMontague65 min
May 8, 9:07 PM CDTSpecial Weather StatementFWDTarrant33 min
May 8, 9:21 PM CDTSpecial Weather StatementFWDCooke, Denton24 min
May 8, 9:42 PM CDTSpecial Weather StatementFWDTarrant43 min
May 8, 9:47 PM CDTSpecial Weather StatementFWDAnderson28 min
May 8, 9:57 PM CDTSpecial Weather StatementFWDDenton33 min
May 8, 10:00 PM CDTSpecial Weather StatementFWDDallas30 min
May 8, 10:30 PM CDTSpecial Weather StatementFWDDallas30 min
May 8, 10:42 PM CDTSpecial Weather StatementFWDKaufman33 min
May 8, 10:57 PM CDTFlash Flood WarningFWDAnderson3 hr
May 8, 11:04 PM CDTSpecial Weather StatementFWDJohnson26 min
May 9, 6:25 PM CDTSpecial Weather StatementFWDPalo Pinto35 min

Nearby

Severe Thunderstorm Warnings in Texas, 2007Every severe thunderstorm warning in 2007

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.