Alert archive / Louisiana / Tornado Warnings in 2002

Tornado Warning 36, NWS New Orleans, LA

October 3, 2002Jefferson Parish, Saint Charles Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Oct 3, 2002, 4:06 AM CDT for Jefferson Parish, Saint Charles Parish, Louisiana. It was in force for 7 hr. 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 3, 2002, 4:06 AM CDT (09:06 UTC)
Expired: Oct 3, 2002, 11:30 AM CDT
In force: 7 hr
Issued by: NWS New Orleans, LA
Area: Counties, with a storm outline in the text

Counties Jefferson Parish, LA, Saint Charles Parish, LA

The watch it was issued in

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

Issued	Product	Office	Lasted
Oct 2, 9:25 PM CDT	Tornado Watch	SPC	13 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 9.1 hours before the alert went out and 56 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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.

057 
WFUS54 KLIX 030906
TORNEW
LAC051-089-030930-

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

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN JEFFERSON PARISH IN SOUTHEAST LOUISIANA
  THIS INCLUDES THE CITIES OF...MARRERO...AVONDALE
  ST. CHARLES PARISH IN SOUTHEAST LOUISIANA
  THIS INCLUDES THE CITY OF HAHNVILLE

* UNTIL 430 AM CDT

* AT 356 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 5 MILES SOUTH OF
  MARRERO...MOVING NORTHWEST AT 55 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.

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 2, 9:37 PM CDT	Tornado Warning	LIX	Terrebonne	13 hr
Oct 3, 1:02 AM CDT	Tornado Warning	LIX	Jefferson	28 min
Oct 3, 4:29 AM CDT	Tornado Warning	LIX	Jefferson, Orleans, Saint Charles	7 hr
Oct 3, 4:29 AM CDT	Tornado Warning	LIX	Saint Charles	8 hr
Oct 3, 6:29 AM CDT	Flash Flood Warning	LIX	Saint Tammany	4 hr
Oct 3, 8:20 AM CDT	Tornado Warning	LIX	Saint Tammany, Washington	4 hr
Oct 3, 9:50 AM CDT	Tornado Warning	LIX	Assumption	3 hr
Oct 3, 10:46 AM CDT	Tornado Warning	LIX	Livingston, Tangipahoa	29 min
Oct 3, 10:56 AM CDT	Tornado Warning	LIX	Saint Tammany	34 min
Oct 3, 10:56 AM CDT	Tornado Warning	LIX	Saint Tammany, Washington	6 days
Oct 3, 11:09 AM CDT	Tornado Warning	LIX	East Feliciana	22 days
Oct 3, 11:09 AM CDT	Tornado Warning	LIX	East Feliciana, Saint Helena	22 days

Nearby

Tornado Warnings in Louisiana, 2002 Every tornado warning in 2002 Tornadoes 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.