Alert archive / Louisiana / Mesoscale Discussions in 2005

Mesoscale Discussion 214

February 23, 200543 parishes in Louisiana; 33 counties in Mississippi; 13 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Feb 23, 2005, 10:35 AM CST for 43 parishes in Louisiana; 33 counties in Mississippi; 13 counties in Texas. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued: Feb 23, 2005, 10:35 AM CST (16:35 UTC)
Expired: Feb 23, 2005, 12:30 PM CST
In force: 115 min
Issued by: the Storm Prediction Center

All 89 counties

Acadia Parish, LA, Allen Parish, LA, Ascension Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Bienville Parish, LA, Calcasieu Parish, LA, Caldwell Parish, LA, Catahoula Parish, LA, Concordia Parish, LA, De Soto Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Evangeline Parish, LA, Franklin Parish, LA, Grant Parish, LA, Iberville Parish, LA, Jackson Parish, LA, Jefferson Davis Parish, LA, Lafayette Parish, LA, LaSalle Parish, LA, Livingston Parish, LA, Madison Parish, LA, Natchitoches Parish, LA, Orleans Parish, LA, Pointe Coupee Parish, LA, Rapides Parish, LA, Red River Parish, LA, Richland Parish, LA, Sabine Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA, Saint Tammany Parish, LA, Tangipahoa Parish, LA, Tensas Parish, LA, Vernon Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Winn Parish, LA, Adams County, MS, Amite County, MS, Claiborne County, MS, Clarke County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, Franklin County, MS, George County, MS, Greene County, MS, Hancock County, MS, Harrison County, MS, Hinds County, MS, Jackson County, MS, Jasper County, MS, Jefferson County, MS, Jefferson Davis County, MS, Jones County, MS, Lamar County, MS, Lawrence County, MS, Lincoln County, MS, Marion County, MS, Pearl River County, MS, Perry County, MS, Pike County, MS, Rankin County, MS, Simpson County, MS, Smith County, MS, Stone County, MS, Walthall County, MS, Warren County, MS, Wayne County, MS, Wilkinson County, MS, Angelina County, TX, Hardin County, TX, Jasper County, TX, Liberty County, TX, Montgomery County, TX, Newton County, TX, Orange County, TX, Polk County, TX, Sabine County, TX, San Augustine County, TX, San Jacinto County, TX, Shelby County, TX, Tyler County, TX

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 35Feb 23, 11:45 AM CST

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 4.6 hours before the alert went out and 163 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: 938 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 601 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 77 m²/s²
0-3 km storm-relative helicity: 83 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.3

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
Feb 23, 7:50 AM CST	Mesoscale Discussion	SPC	Beauregard, De Soto, Grant, Natchitoches, Rapides, Red River and 2 more	115 min
Feb 23, 11:45 AM CST	Severe Thunderstorm Watch	SPC	Allen, Avoyelles, Caldwell, Catahoula, Concordia, East Baton Rouge and 15 more	6 hr
Feb 23, 12:13 PM CST	Mesoscale Discussion	SPC	East Carroll, West Carroll	2 hr
Feb 23, 3:08 PM CST	Mesoscale Discussion	SPC	Acadia, Ascension, Cameron, East Baton Rouge, East Feliciana, Iberville and 14 more	2 hr
Feb 22, 7:45 PM CST	Mesoscale Discussion	SPC	Archer, Baylor, Brown, Callahan, Coke, Coleman and 20 more	60 min
Feb 22, 9:23 PM CST	Mesoscale Discussion	SPC	Hardeman	67 min
Feb 22, 9:45 PM CST	Severe Thunderstorm Watch	SPC	Hardeman	5 hr
Feb 22, 10:52 PM CST	Mesoscale Discussion	SPC	Archer, Bosque, Brown, Clay, Coleman, Collin and 30 more	53 min
Feb 22, 11:30 PM CST	Severe Thunderstorm Watch	SPC	Anderson, Archer, Bosque, Camp, Cherokee, Clay and 48 more	8 hr
Feb 23, 1:41 AM CST	Mesoscale Discussion	SPC	Anderson, Archer, Camp, Cherokee, Clay, Collin and 34 more	2 hr
Feb 23, 1:19 PM CST	Mesoscale Discussion	SPC	Brown, Concho, Crockett, Irion, Kimble, Lampasas and 10 more	116 min
Feb 23, 2:00 PM CST	Mesoscale Discussion	SPC	Brazoria, Calhoun, Chambers, Fort Bend, Harris, Jackson and 5 more	2 hr
Feb 23, 2:10 PM CST	Severe Thunderstorm Watch	SPC	Bandera, Blanco, Burnet, Comal, Concho, Coryell and 20 more	7 hr

Nearby

Mesoscale Discussions in Louisiana, 2005 Mesoscale Discussions in Mississippi, 2005 Mesoscale Discussions in Texas, 2005 Every 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.