Alert archive / Texas / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 188

May 11, 2004Beaver County, Cimarron County, Texas County, Oklahoma; 44 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at May 11, 2004, 4:05 PM CDT for Beaver County, Cimarron County, Texas County, Oklahoma; 44 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 11, 2004, 4:05 PM CDT (21:05 UTC)
Expired
May 11, 2004, 10:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 47 counties

Beaver County, OK, Cimarron County, OK, Texas County, OK, Armstrong County, TX, Bailey County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Childress County, TX, Cochran County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dallam County, TX, Deaf Smith County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Garza County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Hansford County, TX, Hartley County, TX, Hemphill County, TX, Hockley County, TX, Hutchinson County, TX, Kent County, TX, King County, TX, Lamb County, TX, Lipscomb County, TX, Lubbock County, TX, Lynn County, TX, Moore County, TX, Motley County, TX, Ochiltree County, TX, Oldham County, TX, Parmer County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Sherman County, TX, Stonewall County, TX, Swisher County, TX, Terry County, TX, Wheeler County, TX, Yoakum County, TX

The radar

The Amarillo radar (KAMA), 44 km from the middle of the area, began a volume at 21:06 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

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

IssuedProductOfficeCountiesLasted
May 11, 4:49 PM CDTSevere Thunderstorm WarningLUBCastro41 min
May 11, 5:24 PM CDTSevere Thunderstorm WarningAMASherman66 min
May 11, 5:38 PM CDTSevere Thunderstorm WarningAMAHartley52 min
May 11, 5:46 PM CDTTornado WarningAMAHartley44 min
May 11, 6:09 PM CDTSevere Thunderstorm WarningLUBHale66 min
May 11, 6:12 PM CDTSevere Thunderstorm WarningAMAOldham33 min
May 11, 6:14 PM CDTSevere Thunderstorm WarningAMAMoore61 min
May 11, 6:30 PM CDTSevere Thunderstorm WarningAMAPotter45 min
May 11, 6:57 PM CDTSevere Thunderstorm WarningLUBGarza, Kent33 min
May 11, 7:26 PM CDTSevere Thunderstorm WarningAMAHansford64 min
May 11, 7:30 PM CDTSevere Thunderstorm WarningLUBCrosby30 min
May 11, 8:27 PM CDTSevere Thunderstorm WarningLUBKing33 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

Amarillo Airport, TX (KAMA), launched 12:00Z, 9.1 hours before the alert went out and 43 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, Amarillo Airport, TX at 12:00Z on 2004-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 258 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, Amarillo Airport, TX at 12:00Z on 2004-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 square meters per square second.193958Sfc1 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
258 J/kg
Mixed-layer CIN
-246 J/kg
Mixed-layer LCL
1481 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
47 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 10, 7:43 PM CDTMesoscale DiscussionSPCBeaver, Texas2 hr
May 11, 2:00 PM CDTMesoscale DiscussionSPCCimarron, Texas2 hr
May 11, 9:37 AM CDTMesoscale DiscussionSPCAransas, Austin, Bee, Brazoria, Chambers, Colorado and 17 more113 min
May 11, 10:05 AM CDTMesoscale DiscussionSPCBee, Duval, Goliad, Jim Wells, Live Oak, McMullen and 2 more115 min
May 11, 10:55 AM CDTSevere Thunderstorm WatchSPCAransas, Atascosa, Austin, Bastrop, Bee, Brazoria and 33 more5 hr
May 11, 2:33 PM CDTMesoscale DiscussionSPCCrane, Crockett, Glasscock, Irion, Midland, Pecos and 3 more117 min
May 11, 2:58 PM CDTMesoscale DiscussionSPCBrazoria, Fort Bend, Harris, Matagorda62 min
May 11, 3:00 PM CDTMesoscale DiscussionSPCBrazoria, Fort Bend, Harris, Matagorda60 min
May 11, 3:50 PM CDTSevere Thunderstorm WatchSPCChambers, Hardin, Harris, Jefferson, Liberty, Orange3 hr
May 11, 6:03 PM CDTMesoscale DiscussionSPCChambers, Hardin, Jefferson, Liberty, Orange57 min

Nearby

Severe Thunderstorm Watches in Texas, 2004Severe Thunderstorm Watches in Oklahoma, 2004Every severe thunderstorm watch in 2004

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.