Alert archive / Louisiana / Tornado Warnings in 1998

Tornado Warning 2, NWS New Orleans, LA

January 12, 1998Orleans Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Jan 12, 1998, 10:50 AM CST for Orleans Parish, Louisiana. It was in force for 35 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: Jan 12, 1998, 10:50 AM CST (16:50 UTC)
Expired: Jan 12, 1998, 11:25 AM CST
In force: 35 min
Issued by: NWS New Orleans, LA
Area: Whole counties

County Orleans Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 4.8 hours before the alert went out and 30 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: 265 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 499 m above ground
0-6 km bulk shear: 75 kt
0-1 km storm-relative helicity: 411 m²/s²
0-3 km storm-relative helicity: 492 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KNEW 121650 RRA
TORNEW
LAC071-121725-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1050 AM CST MON JAN 12 1998

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS LA HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 1125 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTHEASTERN LOUISIANA

   ...EASTERN ORLEANS PARISH

AT 1048 AM NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM WITH A POSSIBLE TORNADO OVER THE BAYOUS SAVAUGE
WILDLIFE AREA. THE THUNDERSTORM AND POSSIBLE TORNADO WAS MOVING
EAST AROUND 35 MILES. IRISH BAYOU AND VENETIAN ISLES OF EAST NEW
ORLEANS ARE IN THE PATH OF THIS THUNDERSTORM.

IF YOU ARE IN THE PATH OF A TORNADO...GET UNDER A WORKBEN\CH 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
Jan 12, 2:43 AM CST	Severe Thunderstorm Warning	LIX	Pointe Coupee, West Feliciana	62 min
Jan 12, 4:46 AM CST	Severe Thunderstorm Warning	LIX	Pointe Coupee	74 min
Jan 12, 6:33 AM CST	Severe Thunderstorm Warning	LIX	East Baton Rouge, Livingston	62 min
Jan 12, 7:12 AM CST	Severe Thunderstorm Warning	LIX	Saint Tammany, Tangipahoa	63 min
Jan 12, 7:41 AM CST	Severe Thunderstorm Warning	LIX	Tangipahoa	119 min
Jan 12, 8:03 AM CST	Flash Flood Warning	LIX	Saint Tammany, Tangipahoa	3 hr
Jan 12, 8:46 AM CST	Severe Thunderstorm Warning	LIX	Saint Tammany	59 min

Nearby

Tornado Warnings in Louisiana, 1998 Every tornado warning in 1998 Tornadoes in 1998

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.