Alert archive / Texas / Mesoscale Discussions in 2004

Mesoscale Discussion 1324

June 17, 200421 counties in Oklahoma; 22 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2004, 9:19 PM CDT for 21 counties in Oklahoma; 22 counties in Texas. It was in force for 26 min.

The area

The outline as issued.

The facts

Issued: Jun 17, 2004, 9:19 PM CDT (02:19 UTC)
Expired: Jun 17, 2004, 9:45 PM CDT
In force: 26 min
Issued by: the Storm Prediction Center

All 43 counties

Alfalfa County, OK, Beaver County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Comanche County, OK, Cotton 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, Major County, OK, Roger Mills County, OK, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Armstrong County, TX, Briscoe County, TX, Carson County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Donley County, TX, Floyd County, TX, Foard County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Hardeman County, TX, Hemphill County, TX, Lipscomb County, TX, Motley County, TX, Ochiltree County, TX, Randall County, TX, Roberts County, TX, Swisher County, TX, Wheeler County, TX, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 130 km from the middle of the area, began a volume at 02:21 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 00:00Z, 2.3 hours before the alert went out and 152 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 676 J/kg
Mixed-layer CIN: -130 J/kg
Mixed-layer LCL: 1788 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 157 m²/s²
0-3 km storm-relative helicity: 215 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 6.0

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.

Issued	Product	Office	Counties	Lasted
Jun 17, 7:38 PM CDT	Mesoscale Discussion	SPC	Beaver, Cimarron, Texas	2 hr
Jun 17, 9:40 PM CDT	Severe Thunderstorm Watch	SPC	Beaver, Beckham, Blaine, Custer, Dewey, Ellis and 9 more	5 hr
Jun 17, 11:44 PM CDT	Mesoscale Discussion	SPC	Alfalfa, Blaine, Canadian, Custer, Dewey, Garfield and 10 more	91 min
Jun 17, 11:50 PM CDT	Severe Thunderstorm Watch	SPC	Alfalfa, Blaine, Garfield, Grant, Kay, Kingfisher and 5 more	4 hr
Jun 18, 1:29 AM CDT	Mesoscale Discussion	SPC	Alfalfa, Blaine, Craig, Creek, Garfield, Grant and 16 more	91 min
Jun 18, 10:49 AM CDT	Mesoscale Discussion	SPC	Adair, Atoka, Bryan, Carter, Cherokee, Choctaw and 23 more	116 min
Jun 18, 3:30 PM CDT	Severe Thunderstorm Watch	SPC	Beaver, Cimarron, Texas	7 hr
Jun 18, 3:51 PM CDT	Mesoscale Discussion	SPC	Atoka, Bryan, Caddo, Carter, Choctaw, Cleveland and 26 more	114 min
Jun 18, 2:28 PM CDT	Mesoscale Discussion	SPC	Armstrong, Bailey, Briscoe, Castro, Cochran, Crosby and 13 more	2 hr
Jun 18, 6:01 PM CDT	Mesoscale Discussion	SPC	Culberson, Jeff Davis, Loving, Presidio, Reeves, Ward and 1 more	59 min

Nearby

Mesoscale Discussions in Texas, 2004 Mesoscale Discussions in Oklahoma, 2004 Every mesoscale discussion in 2004

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.