Alert archive / Texas / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 274

May 6, 200325 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at May 6, 2003, 5:15 PM CDT for 25 counties in Texas. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
May 6, 2003, 5:15 PM CDT (22:15 UTC)
Expired
May 6, 2003, 10:00 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 25 counties

Collin County, TX, Cooke County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Eastland County, TX, Ellis County, TX, Erath County, TX, Fannin County, TX, Grayson County, TX, Hood County, TX, Hopkins County, TX, Hunt County, TX, Jack County, TX, Johnson County, TX, Kaufman County, TX, Lamar County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Rains County, TX, Rockwall County, TX, Somervell County, TX, Tarrant County, TX, Wise County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 28 km from the middle of the area, began a volume at 22:18 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.

Warnings issued inside it

13 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
May 6, 5:19 PM CDTSevere Thunderstorm WarningFWDMontague, Wise56 min
May 6, 5:58 PM CDTSevere Thunderstorm WarningFWDJack, Wise62 min
May 6, 6:10 PM CDTSevere Thunderstorm WarningFWDMontague35 min
May 6, 6:15 PM CDTSevere Thunderstorm WarningFWDCooke45 min
May 6, 6:20 PM CDTSevere Thunderstorm WarningFWDGrayson55 min
May 6, 6:40 PM CDTSevere Thunderstorm WarningFWDMontague35 min
May 6, 7:06 PM CDTSevere Thunderstorm WarningFWDWise54 min
May 6, 7:40 PM CDTSevere Thunderstorm WarningFWDDenton65 min
May 6, 7:44 PM CDTSevere Thunderstorm WarningFWDCooke61 min
May 6, 8:00 PM CDTSevere Thunderstorm WarningFWDWise60 min
May 6, 8:16 PM CDTSevere Thunderstorm WarningFWDGrayson59 min
May 6, 9:01 PM CDTSevere Thunderstorm WarningFWDDenton59 min
May 6, 9:53 PM CDTSevere Thunderstorm WarningFWDDenton37 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 10.3 hours before the alert went out and 13 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 2003-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2816 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 2003-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 167 square meters per square second.1939587897Sfc1 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
2816 J/kg
Mixed-layer CIN
-137 J/kg
Mixed-layer LCL
1185 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
167 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.9
Supercell composite
6.2

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 6, 8:44 AM CDTMesoscale DiscussionSPCBastrop, Bell, Blanco, Brazos, Burleson, Burnet and 14 more2 hr
May 6, 9:10 AM CDTSevere Thunderstorm WatchSPCBell, Bosque, Brown, Burnet, Callahan, Coleman and 28 more6 hr
May 6, 12:14 PM CDTMesoscale DiscussionSPCBandera, Bell, Bexar, Blanco, Burnet, Comal and 16 more2 hr
May 6, 2:21 PM CDTMesoscale DiscussionSPCAustin, Bastrop, Brazos, Burleson, Colorado, Fayette and 11 more114 min
May 6, 2:47 PM CDTMesoscale DiscussionSPCCollin, Dallas, Delta, Fannin, Franklin, Grayson and 10 more118 min
May 6, 4:46 PM CDTMesoscale DiscussionSPCCollin, Dallas, Delta, Denton, Ellis, Fannin and 7 more119 min

Nearby

Severe Thunderstorm Watches in Texas, 2003Every severe thunderstorm watch in 2003

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.