Alert archive / Louisiana / Tornado Warnings in 2001

Tornado Warning 8, NWS New Orleans, LA

February 28, 2001Lafourche Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Feb 28, 2001, 6:17 AM CST for Lafourche Parish, Louisiana. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Feb 28, 2001, 6:17 AM CST (12:17 UTC)
Expired: Feb 28, 2001, 6:45 AM CST
In force: 28 min
Issued by: NWS New Orleans, LA
Area: Whole counties

County Lafourche Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 0.3 hours before the alert went out and 107 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: 1250 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 446 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 169 m²/s²
0-3 km storm-relative helicity: 227 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.1

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KLIX 281219
TORNEW
LAC057-281245-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
617 AM CST WED FEB 28 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* TORNADO WARNING FOR...
  LAFOURCHE PARISH IN SOUTHEAST LOUISIANA
  THIS INCLUDES THE CITIES OF...LAROSE...THIBODAUX

* UNTIL 645 AM CST

* AT 615 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A LINE OF SEVERE THUNDERSTORMS PRODUCING DAMAGING WINDS AND
  POSSIBLE TORNADOES 3 MILES NORTHWEST OF THIBODAUX MOVING SOUTHEAST 
  AT 20 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
Feb 27, 6:25 PM CST	Flash Flood Warning	LIX	East Feliciana, Saint Helena	3 hr
Feb 28, 4:59 AM CST	Severe Thunderstorm Warning	LIX	Assumption	31 min
Feb 28, 9:43 AM CST	Severe Thunderstorm Warning	LIX	Jefferson, Plaquemines	47 min

Nearby

Tornado Warnings in Louisiana, 2001 Every tornado warning in 2001 Tornadoes in 2001

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.