Alert archive / Louisiana / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 85, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Mar 6, 1998, 2:30 PM CST for Plaquemines Parish, Louisiana. It was in force for 60 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, 2:30 PM CST (20:30 UTC)
- Expired
- Mar 6, 1998, 3:30 PM CST
- In force
- 60 min
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
County Plaquemines Parish, LA
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 6, 1:20 PM CST | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 8.5 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
As transmitted, in the capitals the NWS used until 2016.
318 WUUS1 KNEW 062027 RRA SVRNEW GMZ550-555-LAC075-062130- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NEW ORLEANS LA 230 PM CST FRI MAR 6 1998 THE NATIONAL WEATHER SERVICE IN NEW ORLEANS LA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 330 PM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEASTERN LOUISIANA ...PLAQUEMINES PARISH INCLUDING ADJACENT COASTAL WATERS AT 227 PM SEVERAL SEVERE THUNDERSTORMS WERE NOTED IN THE VICINITY OF BELLE CHASE. THESE STORMS WERE MOVING EAST AT 25 MPH. LARGE HAIL AND STRONG WINDS HAVE BEEN REPORTED IN THESE STORMS. ISOLATED TORNADOES MAY BE POSSIBLE. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
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, 3 hours 30 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, 3 hours 30 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, 12:15 PM CST | Severe Thunderstorm Warning | LIX | Plaquemines | 65 min |
| 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, 3:46 PM CST | Severe Thunderstorm Warning | LIX | Lafourche, Terrebonne | 34 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.