Alert archive / Oklahoma / Mesoscale Discussions in 2005

Mesoscale Discussion 1094

May 31, 200519 counties in Oklahoma; 9 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 31, 2005, 6:46 PM CDT for 19 counties in Oklahoma; 9 counties in Texas. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued
May 31, 2005, 6:46 PM CDT (23:46 UTC)
Expired
May 31, 2005, 8:15 PM CDT
In force
89 min
Issued by
the Storm Prediction Center
All 28 counties

Caddo County, OK, Carter County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Garvin County, OK, Grady County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Jefferson County, OK, Kiowa County, OK, Love County, OK, McClain County, OK, Murray County, OK, Pottawatomie County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK, Archer County, TX, Baylor County, TX, Clay County, TX, Foard County, TX, Hardeman County, TX, Knox County, TX, Montague County, TX, Wichita County, TX, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 38 km from the middle of the area, began a volume at 23:47 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

Norman, OK (KOUN), launched 12:00Z, 11.8 hours before the alert went out and 137 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, Norman, OK at 12:00Z on 2005-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 296 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, Norman, OK at 12:00Z on 2005-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 square meters per square second.193958Sfc1 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
296 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
730 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
29 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 30, 9:15 PM CDTSevere Thunderstorm WatchSPCCimarron, Texas6 hr
May 30, 11:45 PM CDTMesoscale DiscussionSPCCimarron, Texas60 min
May 31, 1:32 AM CDTMesoscale DiscussionSPCCimarron, Texas88 min
May 31, 1:02 PM CDTMesoscale DiscussionSPCAlfalfa, Blaine, Custer, Dewey, Ellis, Garfield and 7 more118 min
May 31, 4:30 PM CDTSevere Thunderstorm WatchSPCBeckham, Caddo, Carter, Cleveland, Comanche, Cotton and 14 more8 hr
May 31, 2:40 AM CDTSevere Thunderstorm WatchSPCBailey, Borden, Briscoe, Castro, Cochran, Crosby and 18 more4 hr
May 31, 5:33 AM CDTMesoscale DiscussionSPCBailey, Borden, Briscoe, Castro, Cochran, Crosby and 18 more87 min
May 31, 1:05 PM CDTMesoscale DiscussionSPCAndrews, Armstrong, Bailey, Borden, Briscoe, Castro and 25 more115 min
May 31, 1:40 PM CDTTornado WatchSPCArmstrong, Bailey, Briscoe, Carson, Castro, Childress and 26 more8 hr
May 31, 3:50 PM CDTMesoscale DiscussionSPCArmstrong, Bailey, Briscoe, Carson, Castro, Childress and 25 more115 min
May 31, 5:33 PM CDTMesoscale DiscussionSPCBorden, Coke, Coleman, Concho, Crockett, Dawson and 20 more87 min
May 31, 6:44 PM CDTMesoscale DiscussionSPCArmstrong, Bailey, Briscoe, Carson, Castro, Childress and 24 more2 hr

Nearby

Mesoscale Discussions in Oklahoma, 2005Mesoscale 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.