Alert archive / Louisiana / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 64, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Feb 22, 1998, 4:23 AM CST for Plaquemines Parish, Louisiana. It was in force for 62 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Feb 22, 1998, 4:23 AM CST (10:23 UTC)
- Expired
- Feb 22, 1998, 5:25 AM CST
- In force
- 62 min
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
County Plaquemines Parish, LA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 22, 4:31 AM CST | Thunderstorm Wind 50 | Venice, LA | A wind gust of 58 mph was recorded at a heliport in Venice. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Feb 22, 3:45 AM CST | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 10.4 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1399 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 166 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KNEW 221023 RRA SVRNEW GMZ550-555-570-575-LAC075-221125- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE NEW ORLEANS LA 423 AM CST SUN FEB 22 1998 THE NATIONAL WEATHER SERVICE IN NEW ORLEANS LA HAS ISSUED A SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 525 AM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEASTERN LOUISIANA ...PLAQUEMINES PARISH IN THE COASTAL WATERS OUT TO 50 NM ...FROM CHANDELEUR SOUND TO MISSISSIPPI RIVER TO BARATARIA BAY AT 420 AM NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS LOCATED ALONG THE PLAQUEMINES PARISH COAST MOVING TOWARD THE NORTHEAST AT 45 MPH. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T6 DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 22, 3:15 AM CST | Severe Thunderstorm Warning | LIX | Terrebonne | 30 min |
| Feb 22, 3:54 AM CST | Severe Thunderstorm Warning | LIX | Lafourche, Terrebonne | 61 min |
| Feb 22, 3:54 AM CST | Severe Thunderstorm Warning | LIX | Jefferson, Saint Charles | 61 min |
| Feb 22, 4:51 AM CST | Severe Thunderstorm Warning | LIX | Jefferson, Orleans, Saint Bernard | 59 min |
| Feb 22, 4:51 AM CST | Severe Thunderstorm Warning | LIX | Saint Charles | 59 min |
| Feb 22, 5:08 AM CST | Severe Thunderstorm Warning | LIX | Saint Tammany, Tangipahoa | 62 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.