Alert archive / Louisiana / Tornado Warnings in 1998
Tornado Warning 41, NWS New Orleans, LA
NWS New Orleans, LA issued this tornado warning at Nov 20, 1998, 11:59 AM CST for Lafourche Parish, Louisiana. It was in force for 31 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 20, 1998, 11:59 AM CST (17:59 UTC)
- Expired
- Nov 20, 1998, 12:30 PM CST
- In force
- 31 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, 6.0 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1119 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 141 m²/s²
- 0-3 km storm-relative helicity
- 170 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
542 WFUS1 KNEW 201756 RRA TORNEW GMZ550-LAC057-201830- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE NEW ORLEANS LA 1159 AM CST FRI NOV 20 1998 THE NATIONAL WEATHER SERVICE IN NEW ORLEANS LA HAS ISSUED A... * TORNADO WARNING FOR - SOUTHERN LAFOURCHE PARISH IN SOUTHEASTERN LOUISIANA * UNTIL 1230 PM CST * AT 1154 AM CST... SHERIFFS DEPARTMENT REPORTED A TORNADO 16 MILES NORTHWEST OF GOLDEN MEADOW OR IN LOCKPORT MOVING SOUTHEAST AT 10 MPH. SOME POWERLINES WERE DOWNED WITH THIS TORNADO. * SOME LOCATIONS IN AND NEAR THE PATH OF THIS TORNADO ARE... CUT OFF AT 1216 PM CST IF YOU ARE IN THESE AREAS...SEEK SHELTER IN A SMALL INTERIOR ROOM AWAY FROM WINDOWS IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. &
What forecasters said that day
The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Nov 20, 10:30 AM CST, 1 hour 29 minutes before
GMZ530-550-555-570-575-LAZ034>040-046>050-056>070-MSZ068>071-077- 080>082-202130- THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS LA 1030 AM CST FRI NOV 20 1998 A COLD FRONT...EXTENDING FROM NATCHEZ MISSISSIPPI TO JUST NORTH OF LAKE CHARLES...WILL MOVE SOUTH THROUGH THE REST OF LOUISIANA AND COASTAL WATERS TODAY INTO THIS EVENING. A FEW THUNDERSTORMS ARE EXPECTED AHEAD OF THE FRONT. HOWEVER...THUNDERSTORMS ARE NOT EXPECTED TO REACH SEVERE LIMITS. OUR WEB SITE PROVIDES MORE WEATHER INFORMATION AT: HTTP://WWW.SRH.NOAA.GOV/LIX (ALL LOWER CASE)
Special weather statement, Nov 20, 10:30 AM CST, 1 hour 29 minutes before
GMZ530-550-555-570-575-LAZ034>040-046>050-056>070-MSZ068>071-077- 080>082-202130- THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS LA 1030 AM CST FRI NOV 20 1998 A COLD FRONT...EXTENDING FROM NATCHEZ MISSISSIPPI TO JUST NORTH OF LAKE CHARLES...WILL MOVE SOUTH THROUGH THE REST OF LOUISIANA AND COASTAL WATERS TODAY INTO THIS EVENING. A FEW THUNDERSTORMS ARE EXPECTED AHEAD OF THE FRONT. HOWEVER...THUNDERSTORMS ARE NOT EXPECTED TO REACH SEVERE LIMITS. OUR WEB SITE PROVIDES MORE WEATHER INFORMATION AT: HTTP://WWW.SRH.NOAA.GOV/LIX (ALL LOWER CASE)
Special weather statement, Nov 20, 11:45 AM CST, 14 minutes before
GMZ530-550-555-570-575-LAZ034>040-046>050-056>070-MSZ068>071-077- 080>082-202130- THUNDERSTORM OUTLOOK...UPDATED NATIONAL WEATHER SERVICE NEW ORLEANS LA 1145 AM CST FRI NOV 20 1998 A COLD FRONT WILL MOVE SOUTH THROUGH THE REST OF LOUISIANA AND COASTAL WATERS THIS AFTERNOON INTO THIS EVENING. SCATTERED THUNDERSTORMS ARE EXPECTED AHEAD OF THE FRONT. WITH BREAKS IN THE CLOUD COVER AND SURFACE TEMPERATURES RISING TO NEAR 80 DEGREES...THE ATMOSPHERE WILL BECOME UNSTABLE AND A FEW THUNDERSTORMS MAY BECOME SEVERE THIS AFTERNOON. OUR WEB SITE PROVIDES MORE WEATHER INFORMATION AT: HTTP://WWW.SRH.NOAA.GOV/LIX (ALL LOWER CASE)
Special weather statement, Nov 20, 11:45 AM CST, 14 minutes before
GMZ530-550-555-570-575-LAZ034>040-046>050-056>070-MSZ068>071-077- 080>082-202130- THUNDERSTORM OUTLOOK...UPDATED NATIONAL WEATHER SERVICE NEW ORLEANS LA 1145 AM CST FRI NOV 20 1998 A COLD FRONT WILL MOVE SOUTH THROUGH THE REST OF LOUISIANA AND COASTAL WATERS THIS AFTERNOON INTO THIS EVENING. SCATTERED THUNDERSTORMS ARE EXPECTED AHEAD OF THE FRONT. WITH BREAKS IN THE CLOUD COVER AND SURFACE TEMPERATURES RISING TO NEAR 80 DEGREES...THE ATMOSPHERE WILL BECOME UNSTABLE AND A FEW THUNDERSTORMS MAY BECOME SEVERE THIS AFTERNOON. OUR WEB SITE PROVIDES MORE WEATHER INFORMATION AT: HTTP://WWW.SRH.NOAA.GOV/LIX (ALL LOWER CASE)
Nearby
Tornado Warnings in Louisiana, 1998Every tornado warning in 1998Tornadoes 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.