Alert archive / Louisiana / Tornado Warnings in 2002

Tornado Warning 35, NWS New Orleans, LA

October 3, 2002Jefferson Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Oct 3, 2002, 1:02 AM CDT for Jefferson Parish, Louisiana. It was in force for 28 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
Oct 3, 2002, 1:02 AM CDT (06:02 UTC)
Expired
Oct 3, 2002, 1:30 AM CDT
In force
28 min
Issued by
NWS New Orleans, LA
Area
Whole counties

County Jefferson Parish, LA

The watch it was issued in

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

IssuedProductOfficeLasted
Oct 2, 9:25 PM CDTTornado WatchSPC13 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 6.0 hours before the alert went out and 74 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 2002-10-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1165 joules per kilogram.LCLLFCEL10008507005003002001001 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 2002-10-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 square meters per square second.193958Sfc1 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
1165 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
655 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
85 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

697 
WFUS54 KLIX 030602
TORNEW
LAC051-030630-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
100 AM CDT THU OCT 3 2002

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL JEFFERSON PARISH IN SOUTHEAST LOUISIANA

* UNTIL 130 AM CDT

* AT 1256 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES SOUTHEAST OF   
  LAFITTE MOVING WEST NORTHWEST AT 45 MPH.

THE COMMUNITIES OF LAFITTE AND BARATARIA ARE IN THE PATH OF THIS 
STORM.

SEEK SHELTER ON THE LOWEST FLOOR OF A BUILDING IN AN INTERIOR HALLWAY
OR ROOM SUCH AS A CLOSET OR BATHROOM.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE.

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 2, 9:37 PM CDTTornado WarningLIXTerrebonne13 hr
Oct 3, 4:06 AM CDTTornado WarningLIXJefferson, Saint Charles7 hr
Oct 3, 4:29 AM CDTTornado WarningLIXJefferson, Orleans, Saint Charles7 hr
Oct 3, 4:29 AM CDTTornado WarningLIXSaint Charles8 hr
Oct 3, 6:29 AM CDTFlash Flood WarningLIXSaint Tammany4 hr
Oct 3, 8:20 AM CDTTornado WarningLIXSaint Tammany, Washington4 hr
Oct 3, 9:50 AM CDTTornado WarningLIXAssumption3 hr
Oct 3, 10:46 AM CDTTornado WarningLIXLivingston, Tangipahoa29 min
Oct 3, 10:56 AM CDTTornado WarningLIXSaint Tammany34 min
Oct 3, 10:56 AM CDTTornado WarningLIXSaint Tammany, Washington6 days
Oct 3, 11:09 AM CDTTornado WarningLIXEast Feliciana22 days
Oct 3, 11:09 AM CDTTornado WarningLIXEast Feliciana, Saint Helena22 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.