Alert archive / Louisiana / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 33, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Feb 10, 1998, 7:38 PM CST for Ascension Parish, Assumption 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 10, 1998, 7:38 PM CST (01:38 UTC)
- Expired
- Feb 10, 1998, 8:40 PM CST
- In force
- 62 min
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
Counties Ascension Parish, LA, Assumption Parish, LA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 10, 8:20 PM CST | Thunderstorm Wind | Donaldsonville, LA | Parish emergency management officials reported that thunderstorm wind gusts blew down a tree and damaged the roof of a mobile home. |
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 10, 4:45 PM CST | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 1.6 hours before the alert went out and 126 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
- 625 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 680 m above ground
- 0-6 km bulk shear
- 73 kt
- 0-1 km storm-relative helicity
- 399 m²/s²
- 0-3 km storm-relative helicity
- 500 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 6.4
The text
As transmitted, in the capitals the NWS used until 2016.
183 WUUS1 KNEW 110139 RRA SVRNEW LAC005-007-110240- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NEW ORLEANS LA 738 PM CST TUE FEB 10 1998 THE NATIONAL WEATHER SERVICE IN NEW ORLEANS LA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 840 PM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEASTERN LOUISIANA ...ASCENSION PARISH ...ASSUMPTION PARISH AT 735 PM CST RARAR SHOWED A LINE OF NUMEROUS THUNDERSTORMS EXTENDING FROM PLAQUEMINE SOUTH TO JUST WEST OF MORGAN CITY. THE LINE OF THUNDERSTORMS ARE MOVING EAST AT 40 MILES AN HOUR. COMMUNITIES IN THE PATH OF THE THUNDERSTORMS ARE GONZALES AND NAPOLEANVILLE. 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.
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 10, 6:00 PM CST | Severe Thunderstorm Warning | LIX | East Baton Rouge, East Feliciana, Iberville, West Baton Rouge | 60 min |
| Feb 10, 6:00 PM CST | Severe Thunderstorm Warning | LIX | Pointe Coupee, West Feliciana | 60 min |
| Feb 10, 6:56 PM CST | Severe Thunderstorm Warning | LIX | East Baton Rouge, East Feliciana, Iberville, Livingston, Saint Helena, West Baton Rouge | 64 min |
| Feb 10, 6:56 PM CST | Severe Thunderstorm Warning | LIX | West Feliciana | 64 min |
| Feb 10, 8:00 PM CST | Severe Thunderstorm Warning | LIX | Iberville | 65 min |
| Feb 10, 8:00 PM CST | Severe Thunderstorm Warning | LIX | Livingston, Saint John the Baptist, Tangipahoa | 65 min |
| Feb 10, 8:00 PM CST | Severe Thunderstorm Warning | LIX | Saint James | 65 min |
| Feb 10, 8:12 PM CST | Severe Thunderstorm Warning | LIX | Lafourche, Terrebonne | 63 min |
| Feb 10, 9:02 PM CST | Severe Thunderstorm Warning | LIX | Saint Tammany, Washington | 63 min |
| Feb 10, 9:02 PM CST | Severe Thunderstorm Warning | LIX | Jefferson, Lafourche, Orleans, Saint Charles | 63 min |
| Feb 10, 9:49 PM CST | Severe Thunderstorm Warning | LIX | Plaquemines, Saint Bernard | 66 min |
| Feb 10, 11:00 PM CST | Severe Thunderstorm Warning | LIX | Plaquemines | 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.