Alert archive / Texas / Mesoscale Discussions in 2007

Mesoscale Discussion 553

April 23, 2007Kinney County, Uvalde County, Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 23, 2007, 9:17 PM CDT for Kinney County, Uvalde County, Texas. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued
Apr 23, 2007, 9:17 PM CDT (02:17 UTC)
Expired
Apr 23, 2007, 11:15 PM CDT
In force
118 min
Issued by
the Storm Prediction Center

Counties Kinney County, TX, Uvalde County, TX

The radar

The Laughlin AFB radar (KDFX), 19 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.

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 2.3 hours before the alert went out and 64 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 2007-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1923 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 2007-04-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 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
1923 J/kg
Mixed-layer CIN
-157 J/kg
Mixed-layer LCL
1353 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.5

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
Apr 23, 7:05 PM CDTMesoscale DiscussionSPCArmstrong, Baylor, Borden, Briscoe, Callahan, Carson and 46 more115 min
Apr 23, 7:48 PM CDTTornado WatchSPCEdwards, Kinney, Maverick, Real, Uvalde, Val Verde and 1 more105 min
Apr 23, 10:22 PM CDTMesoscale DiscussionSPCBaylor, Callahan, Coke, Cottle, Crosby, Dickens and 18 more83 min
Apr 24, 7:29 AM CDTMesoscale DiscussionSPCCrockett, Glasscock, Irion, Reagan, Sterling, Upton91 min
Apr 24, 11:23 AM CDTTornado WatchSPCArcher, Baylor, Clay, Wichita9 hr
Apr 24, 11:28 AM CDTMesoscale DiscussionSPCArcher, Baylor, Brown, Callahan, Clay, Coke and 33 more2 hr
Apr 24, 11:49 AM CDTTornado WatchSPCBrown, Callahan, Coke, Coleman, Collin, Comanche and 35 more11 hr
Apr 24, 12:40 PM CDTMesoscale DiscussionSPCBosque, Collin, Coryell, Dallas, Delta, Denton and 23 more2 hr
Apr 24, 2:40 PM CDTTornado WatchSPCBosque, Bowie, Camp, Cass, Delta, Ellis and 21 more8 hr
Apr 24, 3:58 PM CDTTornado Watch PDSSPCAnderson, Bandera, Bell, Bexar, Blanco, Brown and 43 more7 hr
Apr 24, 6:16 PM CDTMesoscale DiscussionSPCArcher, Baylor, Clay, Wichita119 min
Apr 24, 6:44 PM CDTMesoscale DiscussionSPCBandera, Bell, Bexar, Blanco, Bosque, Brown and 39 more2 hr

Nearby

Mesoscale Discussions in Texas, 2007Every mesoscale discussion in 2007

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.