Alert archive / Oklahoma / Mesoscale Discussions in 2003

Mesoscale Discussion 2081

August 4, 2003Barber County, Clark County, Comanche County, Kansas; 16 counties in Oklahoma; 9 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Aug 4, 2003, 4:40 PM CDT for Barber County, Clark County, Comanche County, Kansas; 16 counties in Oklahoma; 9 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Aug 4, 2003, 4:40 PM CDT (21:40 UTC)
Expired
Aug 4, 2003, 6:45 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 28 counties

Barber County, KS, Clark County, KS, Comanche County, KS, Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Grant County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Kingfisher County, OK, Major County, OK, Roger Mills County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Briscoe County, TX, Childress County, TX, Collingsworth County, TX, Donley County, TX, Floyd County, TX, Gray County, TX, Hall County, TX, Hemphill County, TX, Wheeler County, TX

The radar

The Vance AFB radar (KVNX), 156 km from the middle of the area, began a volume at 21:41 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

Dodge City, (KDDC), launched 12:00Z, 9.7 hours before the alert went out and 205 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, Dodge City, at 12:00Z on 2003-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 808 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, Dodge City, at 12:00Z on 2003-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 119 square meters per square second.1939Sfc1 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
808 J/kg
Mixed-layer CIN
-399 J/kg
Mixed-layer LCL
1381 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
119 m²/s²
0-3 km storm-relative helicity
126 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
Aug 4, 1:48 PM CDTMesoscale DiscussionSPCChautauqua, Cherokee, Labette, Montgomery, Neosho, Wilson2 hr
Aug 4, 2:15 PM CDTMesoscale DiscussionSPCFinney, Gove, Greeley, Hamilton, Kearny, Lane and 7 more2 hr
Aug 4, 5:11 PM CDTMesoscale DiscussionSPCLinn, Miami94 min
Aug 4, 5:05 PM CDTSevere Thunderstorm WatchSPCAlfalfa, Beckham, Blaine, Caddo, Canadian, Custer and 14 more6 hr
Aug 4, 5:30 PM CDTSevere Thunderstorm WatchSPCAdair6 hr

Nearby

Mesoscale Discussions in Oklahoma, 2003Mesoscale Discussions in Texas, 2003Mesoscale Discussions in Kansas, 2003Every mesoscale discussion in 2003

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.