Alert archive / Mississippi / Mesoscale Discussions in 2004

Mesoscale Discussion 94

February 5, 200416 counties in Alabama; 19 parishes in Louisiana; 21 counties in Mississippi

The Storm Prediction Center issued this mesoscale discussion at Feb 5, 2004, 10:01 PM CST for 16 counties in Alabama; 19 parishes in Louisiana; 21 counties in Mississippi. It was in force for 59 min.

The area

The outline as issued.

The facts

Issued: Feb 5, 2004, 10:01 PM CST (04:01 UTC)
Expired: Feb 5, 2004, 11:00 PM CST
In force: 59 min
Issued by: the Storm Prediction Center

All 56 counties

Bibb County, AL, Chilton County, AL, Choctaw County, AL, Clarke County, AL, Dallas County, AL, Greene County, AL, Hale County, AL, Jefferson County, AL, Marengo County, AL, Perry County, AL, Pickens County, AL, Shelby County, AL, Sumter County, AL, Talladega County, AL, Tuscaloosa County, AL, Washington County, AL, Ascension Parish, LA, Assumption Parish, LA, East Baton Rouge Parish, LA, Iberia Parish, LA, Iberville Parish, LA, Lafourche Parish, LA, Livingston Parish, LA, Orleans Parish, LA, Saint Charles Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Martin Parish, LA, Saint Tammany Parish, LA, St. Mary Parish, LA, Tangipahoa Parish, LA, Terrebonne Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, Clarke County, MS, Covington County, MS, Forrest County, MS, Greene County, MS, Hancock County, MS, Jasper County, MS, Jefferson Davis County, MS, Jones County, MS, Kemper County, MS, Lamar County, MS, Lauderdale County, MS, Lawrence County, MS, Marion County, MS, Newton County, MS, Pearl River County, MS, Perry County, MS, Pike County, MS, Smith County, MS, Stone County, MS, Walthall County, MS, Wayne County, MS

The watches that followed

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

Tornado Watch 8Feb 5, 10:55 PM CST

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 4.0 hours before the alert went out and 85 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: 1068 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 490 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 215 m²/s²
0-3 km storm-relative helicity: 224 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 5.4

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 5, 7:03 PM CST	Mesoscale Discussion	SPC	Bibb, Chilton, Choctaw, Greene, Hale, Jefferson and 8 more	87 min
Feb 5, 10:55 PM CST	Tornado Watch	SPC	Autauga, Bibb, Calhoun, Chilton, Choctaw, Clarke and 14 more	5 hr
Feb 6, 2:24 AM CST	Mesoscale Discussion	SPC	Autauga, Calhoun, Chilton, Clarke, Clay, Cleburne and 9 more	96 min
Feb 6, 7:32 AM CST	Mesoscale Discussion	SPC	Barbour, Bullock, Chambers, Coffee, Covington, Crenshaw and 8 more	118 min

Nearby

Mesoscale Discussions in Mississippi, 2004 Mesoscale Discussions in Louisiana, 2004 Mesoscale Discussions in Alabama, 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.