Alert archive / Louisiana / Tornado Warnings in 2002

Tornado Warning 66, NWS New Orleans, LA

October 25, 2002Jefferson Parish, Plaquemines Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Oct 25, 2002, 7:17 PM CDT for Jefferson Parish, Plaquemines Parish, Louisiana. It was in force for 48 days. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 25, 2002, 7:17 PM CDT (00:17 UTC)
Expired
Dec 12, 2002, 8:15 PM CST
In force
48 days
Issued by
NWS New Orleans, LA
Area
Counties, with a storm outline in the text

Counties Jefferson 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
Oct 25, 6:40 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 0.3 hours before the alert went out and 75 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 00:00Z on 2002-10-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1216 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, Slidell Radar S, LA at 00:00Z on 2002-10-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 132 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
1216 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
466 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
132 m²/s²
0-3 km storm-relative helicity
198 m²/s²
Significant tornado parameter
0.8
Supercell composite
5.3

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 25, 7:08 PM CDTTornado WarningLIXJefferson, Saint Charles17 days
Oct 25, 7:37 PM CDTSpecial Marine WarningLIX113 min
Oct 25, 7:43 PM CDTTornado WarningLIXSaint Charles55 days
Oct 25, 8:04 PM CDTTornado WarningLIXSaint Charles55 days
Oct 25, 8:26 PM CDTTornado WarningLIXOrleans, Plaquemines, Saint Bernard34 min
Oct 25, 8:31 PM CDTTornado WarningLIXSaint Tammany55 days
Oct 25, 9:56 PM CDTSpecial Marine WarningLIX64 min
Oct 25, 10:42 PM CDTSpecial Marine WarningLIX2 hr
Oct 25, 10:42 PM CDTSpecial Marine WarningLIX2 hr
Oct 26, 9:37 AM CDTSpecial Marine WarningLIX83 min
Oct 26, 12:15 PM CDTSpecial Marine WarningLIX60 min
Oct 26, 12:35 PM CDTSevere Thunderstorm WarningLIXJefferson, Lafourche, Terrebonne40 min
Oct 26, 1:20 PM CDTSpecial Marine WarningLIX85 min
Oct 26, 2:04 PM CDTSevere Thunderstorm WarningLIXJefferson, Lafourche41 min
Oct 26, 2:48 PM CDTSpecial Marine WarningLIX117 min
Oct 26, 2:48 PM CDTSpecial Marine WarningLIX117 min
Oct 25, 10:37 PM CDTTornado WarningLIXHancock55 days

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.