Alert archive / Louisiana / Tornado Warnings in 2002

Tornado Warning 39, NWS New Orleans, LA

October 3, 2002Saint Tammany Parish, Washington Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Oct 3, 2002, 8:20 AM CDT for Saint Tammany Parish, Washington Parish, Louisiana. It was in force for 4 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, 8:20 AM CDT (13:20 UTC)
Expired: Oct 3, 2002, 12:45 PM CDT
In force: 4 hr
Issued by: NWS New Orleans, LA
Area: Counties, with a storm outline in the text

Counties Saint Tammany Parish, LA, Washington 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 12:00Z, 1.3 hours before the alert went out and 36 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: 855 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 511 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 305 m²/s²
0-3 km storm-relative helicity: 407 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 8.4

Open this sounding in Storm Lab

The text

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

384 
WFUS54 KLIX 031320
TORNEW
LAC103-117-031345-

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

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  ST. TAMMANY PARISH IN SOUTHEAST LOUISIANA
  THIS INCLUDES THE CITY OF SLIDELL
  WASHINGTON PARISH IN SOUTHEAST LOUISIANA
  THIS INCLUDES THE CITY OF FRANKLINTON

* UNTIL 845 AM CDT

* AT 815 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 10 MILES SOUTHEAST 
  OF SLIDELL..MOVING NORTHWEST AT 50 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, 4:06 AM CDT	Tornado Warning	LIX	Jefferson, Saint Charles	7 hr
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, 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.