Alert archive / Texas / Mesoscale Discussions in 2007

Mesoscale Discussion 549

April 23, 200716 counties in Oklahoma; 52 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 23, 2007, 7:05 PM CDT for 16 counties in Oklahoma; 52 counties in Texas. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued
Apr 23, 2007, 7:05 PM CDT (00:05 UTC)
Expired
Apr 23, 2007, 9:00 PM CDT
In force
115 min
Issued by
the Storm Prediction Center
All 68 counties

Beaver County, OK, Beckham County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Kiowa County, OK, Roger Mills County, OK, Texas County, OK, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Armstrong County, TX, Baylor County, TX, Borden County, TX, Briscoe County, TX, Callahan County, TX, Carson County, TX, Childress County, TX, Coke County, TX, Coleman County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Donley County, TX, Fisher County, TX, Floyd County, TX, Foard County, TX, Garza County, TX, Glasscock County, TX, Gray County, TX, Hall County, TX, Hansford County, TX, Hardeman County, TX, Haskell County, TX, Hemphill County, TX, Howard County, TX, Hutchinson County, TX, Jones County, TX, Kent County, TX, King County, TX, Knox County, TX, Lipscomb County, TX, Lubbock County, TX, Lynn County, TX, Mitchell County, TX, Moore County, TX, Motley County, TX, Nolan County, TX, Ochiltree County, TX, Reagan County, TX, Roberts County, TX, Runnels County, TX, Scurry County, TX, Shackelford County, TX, Sherman County, TX, Sterling County, TX, Stonewall County, TX, Swisher County, TX, Taylor County, TX, Throckmorton County, TX, Wheeler County, TX, Wilbarger County, TX

The radar

The Lubbock radar (KLBB), 124 km from the middle of the area, began a volume at 00:04 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

Amarillo Airport, TX (KAMA), launched 00:00Z, 0.1 hours before the alert went out and 165 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 00:00Z on 2007-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1814 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2007-04-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 143 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
1814 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
1478 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
143 m²/s²
0-3 km storm-relative helicity
328 m²/s²
Significant tornado parameter
1.3
Supercell composite
17.9

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, 8:54 PM CDTMesoscale DiscussionSPCGrant, Kay2 hr
Apr 24, 10:04 AM CDTMesoscale DiscussionSPCAlfalfa, Blaine, Caddo, Canadian, Comanche, Cotton and 18 more116 min
Apr 24, 11:23 AM CDTTornado WatchSPCAlfalfa, Atoka, Blaine, Bryan, Caddo, Canadian and 36 more9 hr
Apr 24, 11:28 AM CDTMesoscale DiscussionSPCCotton, Jefferson, Love, Tillman2 hr
Apr 24, 12:40 PM CDTMesoscale DiscussionSPCAdair, Atoka, Bryan, Choctaw, Haskell, Latimer and 8 more2 hr
Apr 24, 2:40 PM CDTTornado WatchSPCMcCurtain8 hr
Apr 24, 3:01 PM CDTTornado WatchSPCAdair, Cherokee, Choctaw, Craig, Delaware, Haskell and 12 more7 hr
Apr 24, 3:37 PM CDTMesoscale DiscussionSPCAlfalfa, Blaine, Bryan, Caddo, Canadian, Carter and 33 more83 min
Apr 24, 6:16 PM CDTMesoscale DiscussionSPCAlfalfa, Atoka, Blaine, Bryan, Caddo, Canadian and 36 more119 min
Apr 23, 7:48 PM CDTTornado WatchSPCEdwards, Kinney, Maverick, Real, Uvalde, Val Verde and 1 more105 min
Apr 23, 9:17 PM CDTMesoscale DiscussionSPCKinney, Uvalde118 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, 11:49 AM CDTTornado WatchSPCBrown, Callahan, Coke, Coleman, Collin, Comanche and 35 more11 hr
Apr 24, 3:58 PM CDTTornado Watch PDSSPCAnderson, Bandera, Bell, Bexar, Blanco, Brown and 43 more7 hr
Apr 24, 6:44 PM CDTMesoscale DiscussionSPCBandera, Bell, Bexar, Blanco, Bosque, Brown and 39 more2 hr

Nearby

Mesoscale Discussions in Texas, 2007Mesoscale Discussions in Oklahoma, 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.