Alert archive / Louisiana / Tornado Watches in 2006

Tornado Watch 852

November 14, 200628 parishes in Louisiana; 18 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Nov 14, 2006, 11:25 PM CST for 28 parishes in Louisiana; 18 counties in Mississippi. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Nov 14, 2006, 11:25 PM CST (05:25 UTC)
Expired
Nov 15, 2006, 5:31 AM CST
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt
All 46 counties

Acadia Parish, LA, Allen Parish, LA, Ascension Parish, LA, Assumption Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Calcasieu Parish, LA, Cameron Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Evangeline Parish, LA, Iberia Parish, LA, Iberville Parish, LA, Jefferson Davis Parish, LA, Lafayette Parish, LA, Livingston Parish, LA, Pointe Coupee Parish, LA, Rapides Parish, LA, Saint Helena Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA, St. Mary Parish, LA, Tangipahoa Parish, LA, Vermilion Parish, LA, Vernon Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Adams County, MS, Amite County, MS, Claiborne County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, Franklin County, MS, Jefferson County, MS, Jefferson Davis County, MS, Jones County, MS, Lamar County, MS, Lawrence County, MS, Lincoln County, MS, Marion County, MS, Pike County, MS, Simpson County, MS, Walthall County, MS, Wilkinson County, MS

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

25 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Nov 15, 12:17 AM CSTTornado WarningLCHLafayette, Vermilion28 min
Nov 15, 12:26 AM CSTTornado WarningLIXSaint Helena, Tangipahoa34 min
Nov 15, 12:40 AM CSTTornado WarningLCHIberia, Saint Martin50 min
Nov 15, 12:42 AM CSTTornado WarningLIXAmite, Pike33 min
Nov 15, 12:59 AM CSTSevere Thunderstorm WarningJANCovington, Jefferson Davis46 min
Nov 15, 1:07 AM CSTTornado WarningLIXPike, Walthall23 min
Nov 15, 1:12 AM CSTTornado WarningLCHIberia33 min
Nov 15, 1:12 AM CSTTornado WarningLCHVermilion33 min
Nov 15, 1:27 AM CSTSevere Thunderstorm WarningJANJones63 min
Nov 15, 1:28 AM CSTTornado WarningLIXWalthall17 min
Nov 15, 1:34 AM CSTTornado WarningLIXAmite26 min
Nov 15, 1:42 AM CSTTornado WarningLIXSaint Helena33 min
Nov 15, 1:51 AM CSTSevere Thunderstorm WarningJANMarion39 min
Nov 15, 1:57 AM CSTTornado WarningLIXAmite, Pike33 min
Nov 15, 1:59 AM CSTTornado WarningJANMarion31 min
Nov 15, 2:06 AM CSTTornado WarningLIXTangipahoa24 min
Nov 15, 2:14 AM CSTTornado WarningJANCovington, Lamar46 min
Nov 15, 2:23 AM CSTTornado WarningLIXTangipahoa, Washington37 min
Nov 15, 2:38 AM CSTTornado WarningJANCovington, Forrest, Jones67 min
Nov 15, 2:45 AM CSTTornado WarningLIXAssumption30 min
Nov 15, 2:54 AM CSTTornado WarningLIXWashington36 min
Nov 15, 3:02 AM CSTTornado WarningJANLamar, Marion58 min
Nov 15, 3:18 AM CSTSevere Thunderstorm WarningJANCovington27 min
Nov 15, 3:43 AM CSTTornado WarningJANJones17 min
Nov 15, 3:55 AM CSTTornado WarningJANForrest35 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 5.4 hours before the alert went out and 168 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

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, 10:07 PM CSTMesoscale DiscussionSPCAcadia, Allen, Avoyelles, Beauregard, Calcasieu, Evangeline and 7 more83 min
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

Tornado Watches in Louisiana, 2006Tornado Watches in Mississippi, 2006Every tornado watch 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.