Alert archive / Texas / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 838

October 31, 200560 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Oct 31, 2005, 11:25 AM CST for 60 counties in Texas. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Oct 31, 2005, 11:25 AM CST (17:25 UTC)
Expired
Oct 31, 2005, 6:00 PM CST
In force
7 hr
Issued by
the Storm Prediction Center
All 60 counties

Anderson County, TX, Angelina County, TX, Atascosa County, TX, Austin County, TX, Bastrop County, TX, Bell County, TX, Bexar County, TX, Blanco County, TX, Brazos County, TX, Burleson County, TX, Burnet County, TX, Caldwell County, TX, Cass County, TX, Cherokee County, TX, Colorado County, TX, Comal County, TX, Coryell County, TX, Falls County, TX, Fayette County, TX, Freestone County, TX, Gonzales County, TX, Gregg County, TX, Grimes County, TX, Guadalupe County, TX, Harrison County, TX, Hays County, TX, Henderson County, TX, Houston County, TX, Karnes County, TX, Kendall County, TX, Lampasas County, TX, Lavaca County, TX, Lee County, TX, Leon County, TX, Limestone County, TX, Llano County, TX, Madison County, TX, Marion County, TX, McLennan County, TX, Milam County, TX, Montgomery County, TX, Nacogdoches County, TX, Navarro County, TX, Panola County, TX, Polk County, TX, Robertson County, TX, Rusk County, TX, San Augustine County, TX, San Jacinto County, TX, Shelby County, TX, Smith County, TX, Travis County, TX, Trinity County, TX, Tyler County, TX, Upshur County, TX, Walker County, TX, Waller County, TX, Washington County, TX, Williamson County, TX, Wilson County, TX

The radar

The Ft Hood radar (KGRK), 156 km from the middle of the area, began a volume at 17:26 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

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

IssuedProductOfficeCountiesLasted
Oct 31, 12:00 PM CSTSevere Thunderstorm WarningFWDCoryell, Lampasas50 min
Oct 31, 12:09 PM CSTSevere Thunderstorm WarningEWXLlano51 min
Oct 31, 12:20 PM CSTSevere Thunderstorm WarningFWDBell55 min
Oct 31, 12:24 PM CSTSevere Thunderstorm WarningEWXBurnet21 min
Oct 31, 12:24 PM CSTSevere Thunderstorm WarningFWDMcLennan59 min
Oct 31, 1:04 PM CSTSevere Thunderstorm WarningSHVCass, Morris26 min
Oct 31, 1:08 PM CSTSevere Thunderstorm WarningEWXWilliamson22 min
Oct 31, 1:10 PM CSTSevere Thunderstorm WarningSHVMarion, Upshur50 min
Oct 31, 1:27 PM CSTSevere Thunderstorm WarningEWXWilliamson48 min
Oct 31, 1:41 PM CSTSevere Thunderstorm WarningFWDMilam64 min
Oct 31, 2:06 PM CSTSevere Thunderstorm WarningEWXKendall39 min
Oct 31, 2:29 PM CSTSevere Thunderstorm WarningEWXBlanco, Comal, Hays46 min
Oct 31, 2:35 PM CSTSevere Thunderstorm WarningHGXBrazos, Burleson40 min
Oct 31, 2:35 PM CSTSevere Thunderstorm WarningHGXBrazos, Burleson40 min
Oct 31, 2:40 PM CSTSevere Thunderstorm WarningSHVCherokee, Nacogdoches, Rusk52 min
Oct 31, 2:54 PM CSTSevere Thunderstorm WarningHGXWashington51 min
Oct 31, 3:01 PM CSTSevere Thunderstorm WarningEWXBastrop28 min
Oct 31, 3:09 PM CSTSevere Thunderstorm WarningHGXAustin51 min
Oct 31, 3:49 PM CSTSevere Thunderstorm WarningHGXWaller41 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, 5.4 hours before the alert went out and 203 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 2005-10-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 456 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 2005-10-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 233 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
456 J/kg
Mixed-layer CIN
-80 J/kg
Mixed-layer LCL
735 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
233 m²/s²
0-3 km storm-relative helicity
228 m²/s²
Significant tornado parameter
0.4
Supercell composite
3.7

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 30, 11:48 PM CSTMesoscale DiscussionSPCHemphill, Lipscomb, Ochiltree, Roberts, Wheeler117 min
Oct 31, 10:55 AM CSTMesoscale DiscussionSPCAnderson, Austin, Bastrop, Bell, Blanco, Brazos and 33 more65 min
Oct 31, 1:35 PM CSTSevere Thunderstorm WatchSPCSan Augustine, Shelby6 hr
Oct 31, 1:53 PM CSTMesoscale DiscussionSPCAnderson, Angelina, Atascosa, Austin, Bastrop, Bell and 55 more97 min
Oct 31, 2:54 PM CSTMesoscale DiscussionSPCBrazoria, Calhoun, Chambers, Colorado, Fort Bend, Galveston and 16 more66 min
Oct 31, 3:10 PM CSTSevere Thunderstorm WatchSPCAransas, Brazoria, Calhoun, Chambers, DeWitt, Fort Bend and 13 more6 hr
Oct 31, 5:26 PM CSTMesoscale DiscussionSPCBee, Brooks, Cameron, Duval, Hidalgo, Jim Hogg and 9 more94 min

Nearby

Severe Thunderstorm Watches in Texas, 2005Every severe thunderstorm watch in 2005

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.