Alert archive / Louisiana / Tornado Warnings in 2002

Tornado Warning 21, NWS New Orleans, LA

August 22, 2002Saint Charles Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Aug 22, 2002, 12:26 PM CDT for Saint Charles Parish, Louisiana. It was in force for 15 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: Aug 22, 2002, 12:26 PM CDT (17:26 UTC)
Expired: Sep 6, 2002, 6:45 PM CDT
In force: 15 days
Issued by: NWS New Orleans, LA
Area: Counties, with a storm outline in the text

County Saint Charles Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 5.4 hours before the alert went out and 60 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: 1819 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 559 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -24 m²/s²
0-3 km storm-relative helicity: -6 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.

274 
WFUS54 KLIX 221726
TORNEW
LAC089-221800-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1224 PM CDT THU AUG 22 2002

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN ST. CHARLES PARISH IN SOUTHEAST LOUISIANA

* UNTIL 100 PM CDT

* AT 1225 PM CDT...ST. CHARLES PARISH LAW ENFORCEMENT REPORTED A 
TORNADO NEAR THE INTERSECTION OF INTERSTATE 310 AND HIGHWAY 61. THE 
TORNADO WAS MOVING NORTH AT 15 MPH OVER A SWAMPY AREA EAST OF NORCO.

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
Aug 22, 9:20 AM CDT	Special Marine Warning	LIX		40 min

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.