Alert archive / Texas / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 37

February 23, 200517 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Feb 23, 2005, 8:15 PM CST for 17 counties in Texas. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Feb 23, 2005, 8:15 PM CST (02:15 UTC)
Expired
Feb 24, 2005, 3:00 AM CST
In force
7 hr
Issued by
the Storm Prediction Center

Counties Atascosa County, TX, Bandera County, TX, Bexar County, TX, Blanco County, TX, Comal County, TX, Edwards County, TX, Frio County, TX, Gillespie County, TX, Kendall County, TX, Kerr County, TX, Kinney County, TX, Maverick County, TX, Medina County, TX, Real County, TX, Uvalde County, TX, Val Verde County, TX, Zavala County, TX

The radar

The Laughlin AFB radar (KDFX), 37 km from the middle of the area, began a volume at 02:17 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
Feb 23, 8:45 PM CSTSevere Thunderstorm WarningEWXEdwards60 min
Feb 23, 8:53 PM CSTSevere Thunderstorm WarningEWXVal Verde67 min
Feb 23, 10:11 PM CSTSevere Thunderstorm WarningEWXVal Verde34 min
Feb 23, 10:24 PM CSTTornado WarningEWXVal Verde36 min
Feb 23, 11:14 PM CSTSevere Thunderstorm WarningEWXEdwards, Kinney46 min
Feb 24, 12:13 AM CSTSevere Thunderstorm WarningEWXZavala62 min
Feb 24, 12:40 AM CSTTornado WarningEWXZavala50 min
Feb 24, 12:55 AM CSTSevere Thunderstorm WarningEWXBandera, Uvalde35 min
Feb 24, 1:20 AM CSTSevere Thunderstorm WarningEWXFrio, Zavala55 min
Feb 24, 1:49 AM CSTSevere Thunderstorm WarningEWXBexar, Medina58 min
Feb 24, 2:08 AM CSTSevere Thunderstorm WarningEWXAtascosa, Frio71 min
Feb 24, 3:00 AM CSTSevere Thunderstorm WarningEWXZavala62 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

Del Rio, TX (KDRT), launched 00:00Z, 2.3 hours before the alert went out and 59 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, Del Rio, TX at 00:00Z on 2005-02-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1603 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, Del Rio, TX at 00:00Z on 2005-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -29 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
1603 J/kg
Mixed-layer CIN
-73 J/kg
Mixed-layer LCL
1537 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
-29 m²/s²
0-3 km storm-relative helicity
12 m²/s²
Significant tornado parameter
-0.1
Supercell composite
-2.4

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 23, 6:46 PM CSTMesoscale DiscussionSPCAndrews, Gaines, Yoakum119 min
Feb 23, 7:36 PM CSTMesoscale DiscussionSPCBandera, Bell, Blanco, Burnet, Caldwell, Comal and 26 more84 min
Feb 23, 11:12 PM CSTMesoscale DiscussionSPCBrown, Coke, Coleman, Concho, Crockett, Irion and 13 more2 hr
Feb 23, 11:37 PM CSTMesoscale DiscussionSPCAtascosa, Bandera, Bexar, Blanco, Comal, Dimmit and 12 more113 min
Feb 24, 1:47 AM CSTMesoscale DiscussionSPCBandera, Bee, Blanco, Caldwell, DeWitt, Edwards and 19 more88 min
Feb 24, 2:15 AM CSTSevere Thunderstorm WatchSPCAtascosa, Bee, Bexar, DeWitt, Goliad, Karnes and 6 more6 hr
Feb 24, 4:12 AM CSTMesoscale DiscussionSPCAransas, Atascosa, Bee, Brazoria, Calhoun, DeWitt and 11 more93 min
Feb 24, 4:45 AM CSTSevere Thunderstorm WatchSPCBrazoria, Calhoun, Jackson, Matagorda, Wharton5 hr
Feb 24, 7:04 AM CSTMesoscale DiscussionSPCBee, Brazoria, Calhoun, Chambers, DeWitt, Fort Bend and 10 more86 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.