Alert archive / Louisiana / Tornado Warnings in 2002

Tornado Warning 56, NWS New Orleans, LA

October 9, 2002Assumption Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Oct 9, 2002, 2:42 PM CDT for Assumption Parish, Louisiana. It was in force for 16 days. 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 9, 2002, 2:42 PM CDT (19:42 UTC)
Expired
Oct 25, 2002, 10:45 PM CDT
In force
16 days
Issued by
NWS New Orleans, LA
Area
Counties, with a storm outline in the text

County Assumption Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 7.7 hours before the alert went out and 133 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 2002-10-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1358 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 2002-10-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 58 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
1358 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
584 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
58 m²/s²
0-3 km storm-relative helicity
82 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.7

Open this sounding in Storm Lab

The text

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

624 
WFUS54 KLIX 091942
TORNEW
LAC005-007-047-093-092030-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
239 PM CDT WED OCT 9 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
  IBERVILLE PARISH IN SOUTHEAST LOUISIANA
  ST. JAMES PARISH IN SOUTHEAST LOUISIANA

* UNTIL 330 PM CDT

* AT 234 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR BELLE ROSE IN 
NORTHERN ASSUMPTION PARISH...MOVING NORTH AT 15 MPH. THIS 
THUNDERSTORM PRODUCED A TORNADO WHICH PRODUCED DAMAGE LABADIEVILLE.

COMMUNITIES IN THE PATH OF THIS STORM INCLUDE WHITE CASTLE... 
GEISMER..AND DONALDSONILLE.

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

IF IN MOBILE HOMES OR VECHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER.

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

LAT...LON 2995 9116 2995 9094 3026 9090 3027 9119

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 9, 2:42 PM CDTTornado WarningLIXAscension, Iberville, Saint James16 days
Oct 9, 3:42 PM CDTSevere Thunderstorm WarningLIXAscension, Iberville48 min
Oct 9, 3:55 PM CDTSevere Thunderstorm WarningLIXAscension, Assumption, Iberville, Saint James50 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.