Alert archive / Louisiana / Tornado Warnings in 1997

Tornado Warning 19, NWS New Orleans, LA

November 1, 1997Tangipahoa Parish, Washington Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Nov 1, 1997, 1:17 PM CST for Tangipahoa Parish, Washington Parish, Louisiana. It was in force for 43 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: Nov 1, 1997, 1:17 PM CST (19:17 UTC)
Expired: Nov 1, 1997, 2:00 PM CST
In force: 43 min
Issued by: NWS New Orleans, LA
Area: Whole counties

Counties Tangipahoa Parish, LA, Washington Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 7.3 hours before the alert went out and 74 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: 2011 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 499 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 151 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 6.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KNEW 011918 RRA
TORNEW
LAC105-117-012000-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
117 PM CST SAT NOV 1 1997
 
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  200 PM CST
FOR RESIDENTS IN THE FOLLOWING LOCATIONS...
 
IN SOUTHEAST LOUISIANA
 
   ...NORTHERN TANGIPAHOA PARISH...WASHINGTON PARISH
 
AT 118 PM CST NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO
LOCATED JUST EAST OF KENTWOOD MOVING EAST AT 35 MPH. MOUNT HERMAN
IN WESTERN WASHINGTON PARISH IS IN THE PATH OF THIS STORM.
 
IF YOU ARE IN THE PATH OF A TORNADO...GET UNDER A WORKBENCH OR PIECE
OF STURDY FURNITURE. SEEK SHELTER IN AN INTERIOR ROOM SUCH AS A
CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...OR CUSHIONS TO
COVER YOUR BODY.  AVOID WINDOWS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 1, 1:00 PM CST	Severe Thunderstorm Warning	LIX	Tangipahoa, Washington	60 min
Nov 1, 1:42 PM CST	Severe Thunderstorm Warning	LIX	Livingston	63 min
Nov 1, 2:56 PM CST	Severe Thunderstorm Warning	LIX	Saint John the Baptist	29 min
Nov 1, 4:36 PM CST	Severe Thunderstorm Warning	LIX	Orleans, Saint Bernard	29 min

Nearby

Tornado Warnings in Louisiana, 1997 Every tornado warning in 1997 Tornadoes in 1997

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.