Alert archive / Louisiana / Mesoscale Discussions in 2006

Mesoscale Discussion 2202

November 14, 200613 parishes in Louisiana; Wilkinson County, Mississippi

The Storm Prediction Center issued this mesoscale discussion at Nov 14, 2006, 10:07 PM CST for 13 parishes in Louisiana; Wilkinson County, Mississippi. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued
Nov 14, 2006, 10:07 PM CST (04:07 UTC)
Expired
Nov 14, 2006, 11:30 PM CST
In force
83 min
Issued by
the Storm Prediction Center

Counties Acadia Parish, LA, Allen Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Calcasieu Parish, LA, Evangeline Parish, LA, Jefferson Davis Parish, LA, Lafayette Parish, LA, Pointe Coupee Parish, LA, Rapides Parish, LA, Saint Landry Parish, LA, Vernon Parish, LA, West Feliciana Parish, LA, Wilkinson County, MS

The watches that followed

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

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 4.1 hours before the alert went out and 93 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-pSkew-T log-p diagram, Lake Charles Mun, LA at 00:00Z on 2006-11-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2154 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 00:00Z on 2006-11-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 194 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
2154 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
485 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
194 m²/s²
0-3 km storm-relative helicity
287 m²/s²
Significant tornado parameter
2.3
Supercell composite
10.6

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.

IssuedProductOfficeCountiesLasted
Nov 14, 6:46 PM CSTMesoscale DiscussionSPCClaiborne, Lincoln, Morehouse, Union, Webster, West Carroll119 min
Nov 14, 9:20 PM CSTTornado Watch PDSSPCBienville, Bossier, Caddo, Caldwell, Catahoula, Claiborne and 16 more9 hr
Nov 14, 11:25 PM CSTTornado WatchSPCAcadia, Allen, Ascension, Assumption, Avoyelles, Beauregard and 22 more6 hr
Nov 14, 11:32 PM CSTMesoscale DiscussionSPCAcadia, Ascension, Avoyelles, Bienville, Bossier, Caddo and 36 more58 min
Nov 15, 1:30 AM CSTMesoscale DiscussionSPCJefferson, Lafourche, Orleans, Plaquemines, Saint Bernard, Saint Charles and 2 more2 hr
Nov 15, 1:59 AM CSTTornado Watch PDSSPCAscension, Assumption, East Baton Rouge, East Feliciana, Iberville, Jefferson and 16 more8 hr
Nov 15, 2:16 AM CSTMesoscale DiscussionSPCBienville, Bossier, Caddo, Caldwell, Catahoula, Claiborne and 16 more119 min
Nov 15, 3:25 AM CSTMesoscale DiscussionSPCAcadia, Allen, Avoyelles, Beauregard, Calcasieu, Cameron and 14 more2 hr
Nov 15, 5:31 AM CSTTornado WatchSPCAcadia, Allen, Avoyelles, Beauregard, Calcasieu, Cameron and 19 more4 hr
Nov 15, 5:55 AM CSTMesoscale DiscussionSPCAscension, Assumption, Jefferson, Lafourche, Livingston, Orleans and 10 more95 min
Nov 15, 7:14 AM CSTMesoscale DiscussionSPCAcadia, Ascension, Avoyelles, Concordia, East Baton Rouge, East Feliciana and 14 more2 hr
Nov 15, 9:30 AM CSTMesoscale DiscussionSPCOrleans, Saint Bernard, Saint Tammany, Tangipahoa, Washington60 min
Nov 15, 9:54 AM CSTTornado WatchSPCJefferson, Lafourche, Orleans, Plaquemines, Saint Bernard, Saint Charles and 1 more11 hr
Nov 14, 9:15 PM CSTMesoscale DiscussionSPCAlcorn, Attala, Benton, Bolivar, Calhoun, Carroll and 30 more2 hr
Nov 15, 2:29 AM CSTMesoscale DiscussionSPCBenton, Coahoma, DeSoto, Lafayette, Lee, Marshall and 6 more2 hr
Nov 15, 4:30 AM CSTTornado WatchSPCAlcorn, Benton, Calhoun, Chickasaw, Coahoma, DeSoto and 16 more5 hr
Nov 15, 12:46 PM CSTMesoscale DiscussionSPCAlcorn, Benton, Lafayette, Marshall, Prentiss, Tippah and 2 more119 min

Nearby

Mesoscale Discussions in Louisiana, 2006Mesoscale Discussions in Mississippi, 2006Every 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.