Alert archive / Louisiana / Tornado Warnings in 2002

Tornado Warning 79, NWS New Orleans, LA

November 5, 2002Jefferson Parish, Lafourche Parish, Plaquemines Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Nov 5, 2002, 10:31 AM CST for Jefferson Parish, Lafourche Parish, Plaquemines Parish, Louisiana. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Nov 5, 2002, 10:31 AM CST (16:31 UTC)
Expired
Nov 5, 2002, 11:15 AM CST
In force
44 min
Issued by
NWS New Orleans, LA
Area
Counties, with a storm outline in the text

Counties Jefferson Parish, LA, Lafourche Parish, LA, Plaquemines Parish, LA

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Nov 5, 9:50 AM CSTTornado WatchSPC5 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 4.5 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-pSkew-T log-p diagram, Slidell Radar S, LA at 12:00Z on 2002-11-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 608 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 2002-11-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 square meters per square second.1939Sfc1 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
608 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
556 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
66 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 5, 8:04 AM CSTSpecial Marine WarningLIX116 min
Nov 5, 8:41 AM CSTSpecial Marine WarningLIX2 hr
Nov 5, 9:51 AM CSTSpecial Marine WarningLIX84 min
Nov 5, 9:56 AM CSTTornado WarningLIXSaint Charles49 days
Nov 5, 9:56 AM CSTTornado WarningLIXJefferson, Saint Charles49 days
Nov 5, 10:10 AM CSTTornado WarningLIXJefferson, Orleans, Plaquemines, Saint Bernard56 days
Nov 5, 10:10 AM CSTTornado WarningLIXJefferson35 min
Nov 5, 10:20 AM CSTSpecial Marine WarningLIX115 min
Nov 5, 10:20 AM CSTSpecial Marine WarningLIX115 min
Nov 5, 10:22 AM CSTSevere Thunderstorm WarningLIXLafourche38 min
Nov 5, 10:56 AM CSTSpecial Marine WarningLIX109 min
Nov 5, 11:08 AM CSTTornado WarningLIXPlaquemines, Saint Bernard37 min
Nov 5, 11:46 AM CSTSevere Thunderstorm WarningLIXPlaquemines44 min
Nov 5, 12:05 PM CSTSpecial Marine WarningLIX115 min
Nov 5, 12:55 PM CSTSpecial Marine WarningLIX2 hr
Nov 5, 2:04 PM CSTSpecial Marine WarningLIX116 min
Nov 5, 11:52 AM CSTSevere Thunderstorm WarningLIXHarrison, Jackson38 min
Nov 5, 12:05 PM CSTTornado WarningLIXJackson40 min

Nearby

Tornado Warnings in Louisiana, 2002Every tornado warning in 2002Tornadoes in 2002

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.