Alert archive / Louisiana / Mesoscale Discussions in 2006

Mesoscale Discussion 98

February 2, 200622 parishes in Louisiana

The Storm Prediction Center issued this mesoscale discussion at Feb 2, 2006, 3:05 AM CST for 22 parishes in Louisiana. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued: Feb 2, 2006, 3:05 AM CST (09:05 UTC)
Expired: Feb 2, 2006, 4:30 AM CST
In force: 85 min
Issued by: the Storm Prediction Center

All 22 counties

Bienville Parish, LA, Caldwell Parish, LA, Catahoula Parish, LA, East Carroll Parish, LA, Franklin Parish, LA, Grant Parish, LA, Jackson Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Rapides Parish, LA, Red River Parish, LA, Richland Parish, LA, Sabine Parish, LA, Tensas Parish, LA, Union Parish, LA, Vernon Parish, LA, West Carroll Parish, LA, Winn Parish, LA

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 9.1 hours before the alert went out and 219 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: 258 J/kg
Mixed-layer CIN: -101 J/kg
Mixed-layer LCL: 689 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 175 m²/s²
0-3 km storm-relative helicity: 239 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.4

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 1, 6:48 PM CST	Mesoscale Discussion	SPC	Acadia, Allen, Beauregard, Calcasieu, Cameron, Evangeline and 10 more	87 min
Feb 1, 8:15 PM CST	Tornado Watch	SPC	Acadia, Allen, Ascension, Assumption, Beauregard, Calcasieu and 13 more	6 hr
Feb 1, 11:44 PM CST	Mesoscale Discussion	SPC	Acadia, Ascension, Assumption, East Baton Rouge, Iberia, Iberville and 13 more	91 min
Feb 2, 1:52 AM CST	Mesoscale Discussion	SPC	Orleans, Saint Bernard, Saint Tammany	83 min
Feb 2, 2:10 AM CST	Tornado Watch	SPC	Ascension, Jefferson, Lafourche, Livingston, Orleans, Plaquemines and 9 more	8 hr
Feb 2, 4:09 AM CST	Mesoscale Discussion	SPC	Jefferson, Lafourche, Orleans, Saint Bernard, Saint Charles, Saint John the Baptist and 3 more	96 min

Nearby

Mesoscale Discussions in Louisiana, 2006 Every mesoscale discussion in 2006

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.