Alert archive / Texas / Mesoscale Discussions in 2004

Mesoscale Discussion 231

March 27, 2004Cotton County, Tillman County, Oklahoma; 15 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Mar 27, 2004, 1:58 PM CST for Cotton County, Tillman County, Oklahoma; 15 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Mar 27, 2004, 1:58 PM CST (19:58 UTC)
Expired: Mar 27, 2004, 4:00 PM CST
In force: 2 hr
Issued by: the Storm Prediction Center

Counties Cotton County, OK, Tillman County, OK, Archer County, TX, Baylor County, TX, Clay County, TX, Foard County, TX, Hardeman County, TX, Haskell County, TX, King County, TX, Knox County, TX, Shackelford County, TX, Stephens County, TX, Stonewall County, TX, Throckmorton County, TX, Wichita County, TX, Wilbarger County, TX, Young County, TX

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 8.0 hours before the alert went out and 272 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: 44 J/kg
Mixed-layer CIN: -218 J/kg
Mixed-layer LCL: 665 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 171 m²/s²
0-3 km storm-relative helicity: 201 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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
Mar 26, 6:00 PM CST	Mesoscale Discussion	SPC	Beaver, Cimarron, Texas	2 hr
Mar 27, 1:55 AM CST	Mesoscale Discussion	SPC	Cimarron, Texas	2 hr
Mar 27, 7:12 AM CST	Mesoscale Discussion	SPC	Alfalfa, Beckham, Blaine, Custer, Dewey, Ellis and 9 more	93 min
Mar 27, 9:12 AM CST	Mesoscale Discussion	SPC	Harper, Woods	3 hr
Mar 27, 9:58 AM CST	Mesoscale Discussion	SPC	Beckham, Ellis, Greer, Harmon, Roger Mills	2 hr
Mar 27, 12:07 PM CST	Mesoscale Discussion	SPC	Alfalfa, Blaine, Canadian, Custer, Dewey, Ellis and 11 more	113 min
Mar 27, 12:30 PM CST	Tornado Watch	SPC	Alfalfa, Beckham, Blaine, Caddo, Canadian, Comanche and 17 more	6 hr
Mar 27, 2:34 PM CST	Mesoscale Discussion	SPC	Alfalfa, Blaine, Custer, Dewey, Garfield, Grant and 7 more	116 min
Mar 27, 3:53 PM CST	Mesoscale Discussion	SPC	Adair, Cherokee, Delaware, Haskell, Hughes, McIntosh and 6 more	2 hr
Mar 27, 5:08 PM CST	Mesoscale Discussion	SPC	Alfalfa, Blaine, Caddo, Canadian, Comanche, Custer and 14 more	37 min
Mar 27, 5:30 PM CST	Tornado Watch	SPC	Alfalfa, Blaine, Caddo, Canadian, Comanche, Custer and 11 more	6 hr
Mar 27, 3:10 AM CST	Mesoscale Discussion	SPC	Callahan, Coke, Coleman, Crane, Ector, Fisher and 14 more	95 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.