Alert archive / Louisiana / Tornado Warnings in 2001

Tornado Warning 51, NWS New Orleans, LA

October 13, 2001Plaquemines Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Oct 13, 2001, 6:35 PM CDT for Plaquemines Parish, Louisiana. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Oct 13, 2001, 6:35 PM CDT (23:35 UTC)
Expired
Oct 13, 2001, 7:00 PM CDT
In force
25 min
Issued by
NWS New Orleans, LA
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Plaquemines Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 11.6 hours before the alert went out and 115 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 2001-10-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1483 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 12:00Z on 2001-10-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 223 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
1483 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
513 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
223 m²/s²
0-3 km storm-relative helicity
295 m²/s²
Significant tornado parameter
1.8
Supercell composite
9.9

Open this sounding in Storm Lab

The text

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

019 
WFUS54 KLIX 132332
TORNEW
LAC075-140000-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
635 PM CDT SAT OCT 13 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* TORNADO WARNING FOR...
  PLAQUEMINES PARISH IN SOUTHEAST LOUISIANA

* UNTIL 700 PM CDT

* AT 630 PM CDT...THE SHERIFFS OFFICE REPORTED A TORNADO NEAR
  BLANCHARD LANE IN VENICE. THE TORNADO WAS MOVING EAST AT 20 MPH.

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.

LAT...LON 2926 8948 2911 8919 2947 8870 2937 8939

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 13, 10:51 AM CDTSevere Thunderstorm WarningLIXEast Baton Rouge, East Feliciana, Livingston, Saint Helena, Tangipahoa54 min
Oct 13, 11:35 AM CDTTornado WarningLIXTangipahoa, Washington25 min
Oct 13, 11:35 AM CDTTornado WarningLIXSaint Helena25 min
Oct 13, 11:50 AM CDTSpecial Marine WarningLIX2 hr
Oct 13, 11:50 AM CDTSpecial Marine WarningLIX2 hr
Oct 13, 12:00 PM CDTSevere Thunderstorm WarningLIXTangipahoa, Washington60 min
Oct 13, 12:00 PM CDTSevere Thunderstorm WarningLIXSaint Tammany60 min
Oct 13, 12:28 PM CDTSevere Thunderstorm WarningLIXAscension, Livingston, Saint James, Saint John the Baptist62 min
Oct 13, 12:28 PM CDTSevere Thunderstorm WarningLIXJefferson, Lafourche, Saint Charles62 min
Oct 13, 12:28 PM CDTSevere Thunderstorm WarningLIXTangipahoa62 min
Oct 13, 12:49 PM CDTSevere Thunderstorm WarningLIXSaint Tammany56 min
Oct 13, 12:49 PM CDTSevere Thunderstorm WarningLIXWashington56 min
Oct 13, 1:14 PM CDTSevere Thunderstorm WarningLIXJefferson, Orleans, Saint Bernard61 min
Oct 13, 1:14 PM CDTSevere Thunderstorm WarningLIXLafourche, Saint Charles61 min
Oct 13, 1:39 PM CDTSevere Thunderstorm WarningLIXSaint Tammany66 min
Oct 13, 2:00 PM CDTSpecial Marine WarningLIX2 hr
Oct 13, 2:00 PM CDTSpecial Marine WarningLIX2 hr
Oct 13, 2:20 PM CDTSevere Thunderstorm WarningLIXOrleans, Saint Bernard25 min
Oct 13, 4:00 PM CDTSpecial Marine WarningLIX2 hr
Oct 13, 4:50 PM CDTSpecial Marine WarningLIX115 min
Oct 13, 4:50 PM CDTSpecial Marine WarningLIX115 min
Oct 13, 5:00 PM CDTSevere Thunderstorm WarningLIXJefferson, Lafourche60 min
Oct 13, 5:35 PM CDTSevere Thunderstorm WarningLIXPlaquemines55 min
Oct 13, 6:00 PM CDTSpecial Marine WarningLIX2 hr

Nearby

Tornado Warnings in Louisiana, 2001Every tornado warning in 2001Tornadoes in 2001

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.