Alert archive / Louisiana / Tornado Warnings in 1998
Tornado Warning 7, NWS New Orleans, LA
NWS New Orleans, LA issued this tornado warning at Mar 7, 1998, 4:56 AM CST for Ascension Parish, Iberville Parish, Louisiana. It was in force for 34 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
- Mar 7, 1998, 4:56 AM CST (10:56 UTC)
- Expired
- Mar 7, 1998, 5:30 AM CST
- In force
- 34 min
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
Counties Ascension Parish, LA, Iberville Parish, LA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 7, 5:00 AM CST | Hail 1.75 | White Castle, LA |
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 |
|---|---|---|---|
| Mar 7, 3:45 AM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 10.9 hours before the alert went out and 137 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
- 35 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 622 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- -21 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
550 WFUS1 KNEW 071053 RRA TORNEW LAC005-047-071130- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE NEW ORLEANS LA 456 AM CST SAT MAR 7 1998 THE NATIONAL WEATHER SERVICE IN NEW ORLEANS LA HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 530 AM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEASTERN LOUISIANA ...SOUTHERN IBERVILLE PARISH ...ASCENSION PARISH AT 454 AM...RADAR INDICATED A SEVERE THUNDERSTORM POSSIBLY PRODUCING A TORNADO 8 MILES WEST OF WHITE CASTLE. THIS STORM WAS MOVING EAST 30 MPH. WHITE CASTLE IS IN THE PATH OF THIS STORM...DUE TO ARRIVE BY 505 AM. SORRENTO AND GONZALEZ ARE ALSO IN THE PATH OF THIS STORM...EXPECTED IN THOSE AREAS BEFORE 530 AM. IF YOU ARE IN THE PATH OF A TORNADO...GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE. SEEK SHELTER IN AN INTERIOR ROOM SUCH AS A CLOSET ON THE LOWEST FLOOR. USE BLANKETS...PILLOWS...OR CUSHIONS TO COVER YOUR BODY. AVOID WINDOWS.
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 7, 3:51 AM CST | Severe Thunderstorm Warning | LIX | Washington | 59 min |
| Mar 7, 4:19 AM CST | Severe Thunderstorm Warning | LIX | Livingston | 36 min |
| Mar 7, 4:24 AM CST | Tornado Warning | LIX | Saint Tammany | 31 min |
| Mar 7, 5:07 AM CST | Tornado Warning | LIX | Saint Tammany | 33 min |
| Mar 7, 5:51 AM CST | Severe Thunderstorm Warning | LIX | Saint James | 34 min |
| Mar 7, 6:41 AM CST | Severe Thunderstorm Warning | LIX | Saint Tammany | 44 min |
| Mar 7, 8:10 AM CST | Severe Thunderstorm Warning | LIX | Pointe Coupee, West Feliciana | 35 min |
| Mar 7, 4:14 PM CST | Severe Thunderstorm Warning | LIX | Assumption | 61 min |
| Mar 7, 4:20 PM CST | Severe Thunderstorm Warning | LIX | West Feliciana | 30 min |
| Mar 7, 4:41 PM CST | Flash Flood Warning | LIX | Saint Bernard | 4 hr |
| Mar 7, 4:46 PM CST | Severe Thunderstorm Warning | LIX | Saint Charles, Saint John the Baptist | 34 min |
| Mar 7, 5:00 PM CST | Severe Thunderstorm Warning | LIX | Saint Tammany, Tangipahoa, Washington | 35 min |
| Mar 7, 5:44 PM CST | Severe Thunderstorm Warning | LIX | Terrebonne | 61 min |
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.