Alert archive / Louisiana / Tornado Warnings in 2002

Tornado Warning 57, NWS New Orleans, LA

October 25, 2002Saint James Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Oct 25, 2002, 5:15 PM CDT for Saint James Parish, Louisiana. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Oct 25, 2002, 5:15 PM CDT (22:15 UTC)
Expired
Oct 25, 2002, 5:45 PM CDT
In force
30 min
Issued by
NWS New Orleans, LA
Area
Counties, with a storm outline in the text

County Saint James Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.3 hours before the alert went out and 119 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 2002-10-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 13 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 2002-10-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 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
13 J/kg
Mixed-layer CIN
-230 J/kg
Mixed-layer LCL
696 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
153 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KLIX 252215
TORNEW
LAC005-007-093-252245-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
515 PM CDT FRI OCT 25 2002

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  ASCENSION PARISH IN SOUTHEAST LOUISIANA
  THIS INCLUDES THE CITIES OF...GONZALES...DONALDSONVILLE
  ASSUMPTION PARISH IN SOUTHEAST LOUISIANA
  ST. JAMES PARISH IN SOUTHEAST LOUISIANA

* UNTIL 545 PM CDT

* AT 505 PM CDT...THE PUBLIC REPORTED A TORNADO AT PLATTENVILLE  
  ALONG HIGHWAY 70...MOVING NORTHEAST AT 20 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
   CONVENT AT 520 PM CDT
   GONZALES AT 540 PM CDT
   SORRENTO AT 545 PM CDT

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 3003 9109 2992 9092 3018 9065 3032 9086

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 25, 5:06 PM CDTSevere Thunderstorm WarningLIXWashington54 min
Oct 25, 5:15 PM CDTTornado WarningLIXAscension, Saint James30 min
Oct 25, 5:15 PM CDTTornado WarningLIXAssumption30 min
Oct 25, 6:20 PM CDTTornado WarningLIXLafourche11 days
Oct 25, 6:30 PM CDTTornado WarningLIXSaint Charles11 days
Oct 25, 6:32 PM CDTSpecial Marine WarningLIX58 min
Oct 25, 6:49 PM CDTTornado WarningLIXSaint Charles, Saint John the Baptist11 days
Oct 25, 6:49 PM CDTTornado WarningLIXSaint John the Baptist26 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.