Alert archive / Louisiana / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 75, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Mar 6, 1998, 12:15 PM CST for Plaquemines Parish, Louisiana. It was in force for 65 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 6, 1998, 12:15 PM CST (18:15 UTC)
- Expired
- Mar 6, 1998, 1:20 PM CST
- In force
- 65 min
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
County Plaquemines Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 6.3 hours before the alert went out and 79 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
- 451 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 501 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 105 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm 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, Mar 6, 11:00 AM CST, 1 hour 15 minutes before
LAZ034>040-046>050-056>070-MSZ068>071-077-080>082-070100- THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS LA 1100 AM CST FRI MAR 6 1998 THUNDERSTORM ACTIVITY WILL BECOME QUITE ACTIVE OVER NEXT FEW DAYS. THUNDERSTORMS ARE ALREADY FORMING IN THE COASTAL WATERS. THIS ACTIVITY WILL CONTINUE TO MOVE INLAND THROUGH THE AFTERNOON HOURS. SOME OF THESE STORMS COULD APPROACH SEVERE LIMITS. STRONG SOUTHERLY WINDS WILL KEEP OUR ATMOSPHERE VERY MOIST THUS BRIEF HEAVY RAIN CAN BE EXPECTED WITH THESE STORMS. THE BIG THREAT WILL COME SATURDAY WHEN THE POSSIBILITY OF SEVERE WEATHER INVADES SOUTHEAST LOUISIANA. THE HIGH POTENTIAL FOR VERY HEAVY RAIN DOES EXIST FOR SATURDAY. RESIDENTS OF SOUTHEAST LOUISIANA ARE URGED TO KEEP TUNED TO THE LATEST WEATHER CONDITIONS BOTH TODAY AND SATURDAY. FOR INFORMATION REGARDING THIS DEVELOPING WEATHER SITUATION...KEEP TUNED TO NOAA WEATHER RADIO...LOCAL AND CABLE TELEVISION STATIONS...LOCAL RADIO STATIONS...OR SURF TO OUR WEBSITE AT: WWW.SRH.NOAA.GOV/FTPROOT/LIX 12
Special weather statement, Mar 6, 11:00 AM CST, 1 hour 15 minutes before
LAZ034>040-046>050-056>070-MSZ068>071-077-080>082-070100- THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS LA 1100 AM CST FRI MAR 6 1998 THUNDERSTORM ACTIVITY WILL BECOME QUITE ACTIVE OVER NEXT FEW DAYS. THUNDERSTORMS ARE ALREADY FORMING IN THE COASTAL WATERS. THIS ACTIVITY WILL CONTINUE TO MOVE INLAND THROUGH THE AFTERNOON HOURS. SOME OF THESE STORMS COULD APPROACH SEVERE LIMITS. STRONG SOUTHERLY WINDS WILL KEEP OUR ATMOSPHERE VERY MOIST THUS BRIEF HEAVY RAIN CAN BE EXPECTED WITH THESE STORMS. THE BIG THREAT WILL COME SATURDAY WHEN THE POSSIBILITY OF SEVERE WEATHER INVADES SOUTHEAST LOUISIANA. THE HIGH POTENTIAL FOR VERY HEAVY RAIN DOES EXIST FOR SATURDAY. RESIDENTS OF SOUTHEAST LOUISIANA ARE URGED TO KEEP TUNED TO THE LATEST WEATHER CONDITIONS BOTH TODAY AND SATURDAY. FOR INFORMATION REGARDING THIS DEVELOPING WEATHER SITUATION...KEEP TUNED TO NOAA WEATHER RADIO...LOCAL AND CABLE TELEVISION STATIONS...LOCAL RADIO STATIONS...OR SURF TO OUR WEBSITE AT: WWW.SRH.NOAA.GOV/FTPROOT/LIX 12
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 6, 12:40 PM CST | Severe Thunderstorm Warning | LIX | Terrebonne | 60 min |
| Mar 6, 12:56 PM CST | Severe Thunderstorm Warning | LIX | Assumption | 64 min |
| Mar 6, 1:12 PM CST | Severe Thunderstorm Warning | LIX | Saint Charles | 33 min |
| Mar 6, 1:23 PM CST | Severe Thunderstorm Warning | LIX | Jefferson | 32 min |
| Mar 6, 1:46 PM CST | Severe Thunderstorm Warning | LIX | Lafourche | 64 min |
| Mar 6, 1:59 PM CST | Tornado Warning | LIX | Jefferson | 16 min |
| Mar 6, 2:16 PM CST | Tornado Warning | LIX | Jefferson, Orleans, Saint Bernard | 34 min |
| Mar 6, 2:21 PM CST | Severe Thunderstorm Warning | LIX | Saint Tammany | 64 min |
| Mar 6, 2:30 PM CST | Severe Thunderstorm Warning | LIX | Plaquemines | 60 min |
| Mar 6, 3:46 PM CST | Severe Thunderstorm Warning | LIX | Lafourche, Terrebonne | 34 min |
| Mar 6, 2:09 PM CST | Severe Thunderstorm Warning | LIX | Hancock | 36 min |
| Mar 6, 3:06 PM CST | Severe Thunderstorm Warning | LIX | Harrison | 34 min |
| Mar 6, 3:35 PM CST | Severe Thunderstorm Warning | LIX | Jackson | 60 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 1998Every severe thunderstorm warning 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.