Alert archive / Texas / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 11, NWS Fort Worth, TX

March 29, 2007Jack County, Palo Pinto County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Mar 29, 2007, 11:30 AM CDT for Jack County, Palo Pinto County, Texas. It was in force for 60 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
Mar 29, 2007, 11:30 AM CDT (16:30 UTC)
Expired
Mar 29, 2007, 12:30 PM CDT
In force
60 min
Issued by
NWS Fort Worth, TX
Area
Counties, with a storm outline in the text

Counties Jack County, TX, Palo Pinto County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 100 km from the middle of the area, began a volume at 16:32 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 12:00Z, 4.5 hours before the alert went out and 91 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 12:00Z on 2007-03-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 447 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 12:00Z on 2007-03-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 290 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
447 J/kg
Mixed-layer CIN
-246 J/kg
Mixed-layer LCL
674 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
290 m²/s²
0-3 km storm-relative helicity
425 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

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 Mar 29, 10:28 AM CDT, 1 hour 2 minutes earlier.

Area forecast discussion, Mar 29, 10:28 AM CDT, 1 hour 2 minutes before
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Hazardous weather outlook, Mar 29, 11:30 AM CDT, 0 minutes before
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In the hours before

Special weather statement, Mar 29, 8:57 AM CDT, 2 hours 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
857 AM CDT THU MAR 29 2007

TXZ100-101-115-291500-
JACK TX-YOUNG TX-STEPHENS TX-
857 AM CDT THU MAR 29 2007

...SIGNIFICANT WEATHER ADVISORY FOR...
  SOUTHERN JACK COUNTY
  NORTHEASTERN STEPHENS COUNTY
  EASTERN YOUNG COUNTY

AT 857 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 17 MILES SOUTH OF GRAHAM...MOVING NORTHEAST AT 35
MPH.

CITIES IN THE PATH OF THIS STORM INCLUDE BRYSON...GRAHAM AND
JACKSBORO.

FREQUENT CLOUD TO GROUND LIGHTNING...VERY HEAVY RAINFALL TO AN INCH
PER HOUR...PEA-SIZED HAIL...AND WIND GUSTS TO 40 MPH CAN BE EXPECTED
FROM THIS STORM.

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

LAT...LON 3285 9877 3276 9859 3321 9805 3343 9857
Special weather statement, Mar 29, 10:21 AM CDT, 1 hour 9 minutes before
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Special weather statement, Mar 29, 11:13 AM CDT, 17 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Mar 29, 8:57 AM CDTSpecial Weather StatementFWDJack63 min
Mar 29, 9:21 AM CDTSevere Thunderstorm WarningFWDJack, Young33 min
Mar 29, 10:12 AM CDTFlash Flood WatchFWDAnderson, Bell, Bosque, Collin, Comanche, Cooke and 40 more44 hr
Mar 29, 10:21 AM CDTSpecial Weather StatementFWDMontague24 min
Mar 29, 11:13 AM CDTSpecial Weather StatementFWDJack, Palo Pinto32 min
Mar 29, 11:40 AM CDTSpecial Weather StatementFWDEastland35 min
Mar 29, 12:04 PM CDTSpecial Weather StatementFWDMills26 min
Mar 29, 12:14 PM CDTSpecial Weather StatementFWDWise31 min
Mar 29, 12:18 PM CDTSpecial Weather StatementFWDErath57 min
Mar 29, 12:22 PM CDTSpecial Weather StatementFWDPalo Pinto, Parker53 min
Mar 29, 12:53 PM CDTSpecial Weather StatementFWDMills37 min
Mar 29, 1:57 PM CDTSpecial Weather StatementFWDMontague33 min
Mar 29, 2:01 PM CDTSpecial Weather StatementFWDHamilton44 min
Mar 29, 2:07 PM CDTSpecial Weather StatementFWDParker23 min
Mar 29, 2:34 PM CDTSpecial Weather StatementFWDHamilton26 min
Mar 29, 2:40 PM CDTSpecial Weather StatementFWDParker35 min
Mar 29, 3:09 PM CDTSpecial Weather StatementFWDWise36 min
Mar 29, 4:02 PM CDTSpecial Weather StatementFWDHill28 min
Mar 29, 4:11 PM CDTSpecial Weather StatementFWDMcLennan34 min
Mar 29, 4:40 PM CDTFlash Flood WarningFWDBosque, Hill3 hr
Mar 29, 4:50 PM CDTSpecial Weather StatementFWDHill, Limestone, McLennan25 min
Mar 29, 5:15 PM CDTSpecial Weather StatementFWDFreestone, Hill, Limestone, McLennan, Navarro30 min
Mar 29, 5:24 PM CDTSpecial Weather StatementFWDCollin, Dallas, Denton, Ellis, Johnson, Tarrant96 min
Mar 29, 5:30 PM CDTSpecial Weather StatementFWDCollin, Dallas, Denton, Ellis, Johnson, Tarrant90 min
Mar 29, 5:52 PM CDTSpecial Weather StatementFWDNavarro23 min
Mar 29, 5:57 PM CDTSpecial Weather StatementFWDEllis33 min
Mar 29, 6:19 PM CDTSevere Thunderstorm WarningFWDNavarro56 min
Mar 29, 6:43 PM CDTFlash Flood WarningFWDEllis3 hr

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.