Alert archive / Louisiana / Tornado Warnings in 1998

Tornado Warning 8, NWS New Orleans, LA

March 7, 1998Saint Tammany Parish, Louisiana; Pearl River County, Mississippi

NWS New Orleans, LA issued this tornado warning at Mar 7, 1998, 5:07 AM CST for Saint Tammany Parish, Louisiana; Pearl River County, Mississippi. It was in force for 33 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: Mar 7, 1998, 5:07 AM CST (11:07 UTC)
Expired: Mar 7, 1998, 5:40 AM CST
In force: 33 min
Issued by: NWS New Orleans, LA
Area: Whole counties

Counties Saint Tammany Parish, LA, Pearl River County, MS

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 7, 3:45 AM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 11.1 hours before the alert went out and 38 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: 35 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 622 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: -21 m²/s²
0-3 km storm-relative helicity: 31 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.

652 
WFUS1 KNEW 071104 RRA
TORNEW
LAC103-MSC109-071140-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
507 AM CST SAT MAR 7 1998

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS LA HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 540 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN SOUTHEASTERN LOUISIANA

   ...EXTREME EASTERN ST TAMMANY PARISH

IN SOUTHERN MISSISSIPPI

   ...SOUTHERN PEARL RIVER COUNTY

AT 504 AM CST...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM
NEAR TALISHEEK POSSIBLY PRODUCING A TORNADO. THIS STORM WAS MOVING
EAST 25 MPH.

PICAYUNE AND NICHOLSON ARE 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
Mar 7, 3:51 AM CST	Severe Thunderstorm Warning	LIX	Washington	59 min
Mar 7, 4:19 AM CST	Severe Thunderstorm Warning	LIX	Livingston	36 min
Mar 7, 4:24 AM CST	Tornado Warning	LIX	Saint Tammany	31 min
Mar 7, 4:56 AM CST	Tornado Warning	LIX	Ascension, Iberville	34 min
Mar 7, 5:51 AM CST	Severe Thunderstorm Warning	LIX	Saint James	34 min
Mar 7, 6:41 AM CST	Severe Thunderstorm Warning	LIX	Saint Tammany	44 min
Mar 7, 8:10 AM CST	Severe Thunderstorm Warning	LIX	Pointe Coupee, West Feliciana	35 min
Mar 7, 4:14 PM CST	Severe Thunderstorm Warning	LIX	Assumption	61 min
Mar 7, 4:20 PM CST	Severe Thunderstorm Warning	LIX	West Feliciana	30 min
Mar 7, 4:41 PM CST	Flash Flood Warning	LIX	Saint Bernard	4 hr
Mar 7, 4:46 PM CST	Severe Thunderstorm Warning	LIX	Saint Charles, Saint John the Baptist	34 min
Mar 7, 5:00 PM CST	Severe Thunderstorm Warning	LIX	Saint Tammany, Tangipahoa, Washington	35 min
Mar 7, 5:44 PM CST	Severe Thunderstorm Warning	LIX	Terrebonne	61 min
Mar 7, 5:32 AM CST	Severe Thunderstorm Warning	LIX	Hancock	33 min
Mar 7, 6:09 AM CST	Tornado Warning	LIX	Harrison	31 min
Mar 7, 11:43 AM CST	Flash Flood Warning	LIX	Jackson	3 hr
Mar 7, 12:07 PM CST	Flash Flood Warning	LIX	Hancock, Harrison	2 hr
Mar 7, 4:41 PM CST	Flash Flood Warning	LIX	Hancock, Harrison	4 hr
Mar 7, 4:41 PM CST	Flash Flood Warning	LIX	Jackson	4 hr

Nearby

Tornado Warnings in Louisiana, 1998 Tornado Warnings in Mississippi, 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.