Alert archive / Texas / Mesoscale Discussions in 2005

Mesoscale Discussion 224

February 23, 200532 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Feb 23, 2005, 7:36 PM CST for 32 counties in Texas. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued
Feb 23, 2005, 7:36 PM CST (01:36 UTC)
Expired
Feb 23, 2005, 9:00 PM CST
In force
84 min
Issued by
the Storm Prediction Center
All 32 counties

Bandera County, TX, Bell County, TX, Blanco County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, Concho County, TX, Coryell County, TX, Crockett County, TX, Edwards County, TX, Gillespie County, TX, Guadalupe County, TX, Hays County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Kinney County, TX, Lampasas County, TX, Llano County, TX, Mason County, TX, McCulloch County, TX, Menard County, TX, Mills County, TX, Real County, TX, San Saba County, TX, Schleicher County, TX, Sutton County, TX, Terrell County, TX, Travis County, TX, Uvalde County, TX, Val Verde County, TX, Williamson County, TX

The radar

The San Angelo radar (KSJT), 114 km from the middle of the area, began a volume at 01:39 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 1.6 hours before the alert went out and 112 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

The text

As transmitted, in the capitals the NWS used until 2016.

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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, 8:15 PM CSTSevere Thunderstorm WatchSPCAtascosa, Bandera, Bexar, Blanco, Comal, Edwards and 11 more7 hr
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

Mesoscale Discussions in Texas, 2005Every mesoscale discussion 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.