Alert archive / Louisiana / Tornado Watches in 2006

Tornado Watch 102

March 20, 200625 parishes in Louisiana; 25 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Mar 20, 2006, 9:53 AM CST for 25 parishes in Louisiana; 25 counties in Mississippi. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Mar 20, 2006, 9:53 AM CST (15:53 UTC)
Expired
Mar 20, 2006, 4:27 PM CST
In force
7 hr
Issued by
the Storm Prediction Center
All 50 counties

Acadia Parish, LA, Allen Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Calcasieu Parish, LA, Catahoula Parish, LA, Concordia Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Evangeline Parish, LA, Grant Parish, LA, Jefferson Davis Parish, LA, LaSalle Parish, LA, Natchitoches Parish, LA, Pointe Coupee Parish, LA, Rapides Parish, LA, Sabine Parish, LA, Saint Helena Parish, LA, Saint Landry Parish, LA, Tangipahoa Parish, LA, Tensas 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, Hinds County, MS, Jasper County, MS, Jefferson County, MS, Jefferson Davis County, MS, Jones County, MS, Lamar County, MS, Lawrence County, MS, Lincoln County, MS, Madison County, MS, Marion County, MS, Newton County, MS, Pike County, MS, Rankin County, MS, Scott County, MS, Simpson County, MS, Smith County, MS, Walthall County, MS, Wilkinson County, MS

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Mar 20, 10:57 AM CSTSevere Thunderstorm WarningLCHVernon63 min
Mar 20, 11:26 AM CSTTornado WarningJANJefferson Davis, Lawrence64 min
Mar 20, 11:51 AM CSTTornado WarningJANLawrence28 min
Mar 20, 11:59 AM CSTSevere Thunderstorm WarningJANTensas46 min
Mar 20, 11:59 AM CSTTornado WarningJANCovington46 min
Mar 20, 12:24 PM CSTSevere Thunderstorm WarningJANJasper, Smith56 min
Mar 20, 12:35 PM CSTTornado WarningJANJasper, Jones, Smith46 min
Mar 20, 12:39 PM CSTSevere Thunderstorm WarningJANConcordia36 min
Mar 20, 12:59 PM CSTSevere Thunderstorm WarningJANCatahoula, Concordia46 min
Mar 20, 1:00 PM CSTFlash Flood WarningJANClaiborne, Hinds, Rankin, Warren3 hr
Mar 20, 1:26 PM CSTSevere Thunderstorm WarningJANAdams, Franklin, Jefferson49 min
Mar 20, 1:47 PM CSTSevere Thunderstorm WarningJANCopiah58 min
Mar 20, 1:56 PM CSTFlash Flood WarningJANClaiborne, Copiah, Jefferson, Lincoln3 hr
Mar 20, 2:03 PM CSTTornado WarningJANLincoln42 min
Mar 20, 2:15 PM CSTSevere Thunderstorm WarningJANSimpson60 min
Mar 20, 2:16 PM CSTTornado WarningJANLawrence44 min
Mar 20, 2:16 PM CSTTornado WarningJANAdams, Franklin29 min
Mar 20, 2:27 PM CSTTornado WarningJANJefferson Davis29 min
Mar 20, 2:30 PM CSTSevere Thunderstorm WarningLIXPointe Coupee, West Feliciana45 min
Mar 20, 2:39 PM CSTTornado WarningLIXEast Feliciana, Pointe Coupee, West Feliciana36 min
Mar 20, 2:41 PM CSTTornado WarningJANCovington49 min
Mar 20, 2:48 PM CSTSevere Thunderstorm WarningJANSmith27 min
Mar 20, 2:58 PM CSTTornado WarningJANJasper, Jones, Smith47 min
Mar 20, 3:05 PM CSTTornado WarningLIXEast Feliciana, West Feliciana25 min
Mar 20, 3:09 PM CSTFlash Flood WarningJANJasper, Smith3 hr
Mar 20, 3:16 PM CSTSevere Thunderstorm WarningLIXPointe Coupee, West Feliciana29 min
Mar 20, 3:24 PM CSTSevere Thunderstorm WarningJANMarion36 min
Mar 20, 3:30 PM CSTSevere Thunderstorm WarningLIXAmite, Pike45 min
Mar 20, 3:37 PM CSTSevere Thunderstorm WarningLIXAmite, Wilkinson23 min
Mar 20, 3:44 PM CSTTornado WarningJANForrest, Lamar46 min
Mar 20, 3:45 PM CSTSevere Thunderstorm WarningJANJones45 min
Mar 20, 3:52 PM CSTSevere Thunderstorm WarningLIXSaint Helena, Tangipahoa38 min
Mar 20, 3:55 PM CSTTornado WarningJANJones31 min
Mar 20, 4:01 PM CSTSevere Thunderstorm WarningJANMarion29 min
Mar 20, 4:03 PM CSTTornado WarningLIXPike, Walthall27 min
Mar 20, 4:14 PM CSTSevere Thunderstorm WarningLIXWashington31 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

Jackson, MS (KJAN), launched 12:00Z, 3.9 hours before the alert went out and 187 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, Jackson, MS at 12:00Z on 2006-03-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Jackson, MS at 12:00Z on 2006-03-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 420 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
551 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
420 m²/s²
0-3 km storm-relative helicity
432 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 20, 3:36 AM CSTMesoscale DiscussionSPCBeauregard, Calcasieu24 min
Mar 20, 4:21 AM CSTMesoscale DiscussionSPCAllen, Avoyelles, Beauregard, Calcasieu, Evangeline, Grant and 6 more24 min
Mar 20, 4:44 AM CSTTornado WatchSPCAllen, Avoyelles, Beauregard, Evangeline, Rapides, Saint Landry and 1 more5 hr
Mar 20, 6:36 AM CSTMesoscale DiscussionSPCAcadia, Allen, Beauregard, Evangeline, Rapides, Vernon54 min
Mar 20, 9:20 AM CSTMesoscale DiscussionSPCAcadia, Allen, Avoyelles, Beauregard, Calcasieu, Concordia and 12 more85 min
Mar 20, 2:12 PM CSTMesoscale DiscussionSPCAcadia, Allen, Avoyelles, Beauregard, Calcasieu, Catahoula and 19 more93 min
Mar 20, 3:09 PM CSTTornado WatchSPCAscension, East Baton Rouge, East Feliciana, Iberville, Livingston, Pointe Coupee and 6 more7 hr
Mar 20, 5:47 PM CSTMesoscale DiscussionSPCGeorge, Greene, Hancock, Harrison, Jackson, Pearl River and 2 more118 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.