Alert archive / Texas / Mesoscale Discussions in 2007

Mesoscale Discussion 726

May 6, 2007Clark County, Kansas; 9 counties in Oklahoma; 26 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 6, 2007, 1:47 PM CDT for Clark County, Kansas; 9 counties in Oklahoma; 26 counties in Texas. It was in force for 58 min.

The area

The outline as issued.

The facts

Issued
May 6, 2007, 1:47 PM CDT (18:47 UTC)
Expired
May 6, 2007, 2:45 PM CDT
In force
58 min
Issued by
the Storm Prediction Center
All 36 counties

Clark County, KS, Beckham County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Roger Mills County, OK, Woods County, OK, Woodward County, OK, Childress County, TX, Coke County, TX, Collingsworth County, TX, Cottle County, TX, Dickens County, TX, Fisher County, TX, Foard County, TX, Hall County, TX, Hardeman County, TX, Haskell County, TX, Hemphill County, TX, Irion County, TX, Jones County, TX, Kent County, TX, King County, TX, Knox County, TX, Lipscomb County, TX, Motley County, TX, Nolan County, TX, Runnels County, TX, Schleicher County, TX, Scurry County, TX, Stonewall County, TX, Taylor County, TX, Tom Green County, TX, Wheeler County, TX

The radar

The Lubbock radar (KLBB), 141 km from the middle of the area, began a volume at 18:50 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

Amarillo Airport, TX (KAMA), launched 12:00Z, 6.8 hours before the alert went out and 216 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 12:00Z on 2007-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2007-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3065 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
272 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
May 5, 7:22 PM CDTTornado WatchSPCAtchison, Doniphan9 hr
May 5, 8:18 PM CDTMesoscale DiscussionSPCAllen, Anderson, Atchison, Butler, Chase, Coffey and 18 more57 min
May 5, 9:08 PM CDTTornado Watch PDSSPCAnderson, Barber, Barton, Brown, Butler, Chase and 64 more7 hr
May 5, 11:24 PM CDTMesoscale DiscussionSPCBarber, Barton, Clark, Cloud, Comanche, Edwards and 23 more66 min
May 6, 1:50 AM CDTMesoscale DiscussionSPCAnderson, Atchison, Barber, Barton, Brown, Butler and 48 more85 min
May 6, 7:10 AM CDTMesoscale DiscussionSPCCoffey, Franklin, Johnson, Wyandotte95 min
May 6, 9:19 AM CDTTornado WatchSPCAllen, Bourbon, Chautauqua, Cherokee, Cowley, Crawford and 8 more5 hr
May 6, 11:41 AM CDTMesoscale DiscussionSPCAllen, Anderson, Barber, Barton, Bourbon, Butler and 36 more94 min
May 6, 1:59 PM CDTTornado WatchSPCAllen, Barber, Bourbon, Butler, Chautauqua, Cherokee and 25 more8 hr
May 6, 5:38 PM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Butler, Chase, Chautauqua and 28 more67 min
May 6, 6:00 PM CDTSevere Thunderstorm WatchSPCAnderson, Chase, Clay, Cloud, Coffey, Dickinson and 18 more7 hr
May 5, 7:34 PM CDTMesoscale DiscussionSPCTillman56 min
May 5, 7:48 PM CDTTornado WatchSPCComanche, Jackson, Tillman7 hr
May 5, 9:58 PM CDTTornado WatchSPCAlfalfa, Beaver, Beckham, Blaine, Custer, Dewey and 12 more7 hr
May 6, 3:37 AM CDTMesoscale DiscussionSPCAlfalfa, Beckham, Blaine, Custer, Dewey, Ellis and 9 more53 min
May 6, 7:50 AM CDTMesoscale DiscussionSPCAlfalfa, Beckham, Custer, Dewey, Greer, Harmon and 4 more85 min
May 6, 2:36 PM CDTTornado WatchSPCBrown, Callahan, Coke, Coleman, Concho, Crockett and 23 more7 hr

Nearby

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