Alert archive / Louisiana / Tornado Warnings in 1999
Tornado Warning 25, NWS New Orleans, LA
NWS New Orleans, LA issued this tornado warning at Mar 9, 1999, 1:06 AM CST for Tangipahoa Parish, Louisiana. It was in force for 34 min. 3 reports 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 9, 1999, 1:06 AM CST (07:06 UTC)
- Expired
- Mar 9, 1999, 1:40 AM CST
- In force
- 34 min
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
County Tangipahoa Parish, LA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 9, 1:15 AM CST | Hail 1 | Amite, LA | Quarter size hail was reported by the Amite Fire Department. |
| Mar 9, 1:15 AM CST | Hail 1.75 | Wilmer, LA | Golfball size hail was reported in Wilmer by the Amite Police Department. |
| Mar 9, 1:20 AM CST | Tornado F0 | Amite, LA | Louisiana State Police reported a brief tornado touchdown that resulted in no damge just east of Amite. |
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 8, 10:30 PM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 7.1 hours before the alert went out and 80 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
- 230 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 476 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 224 m²/s²
- 0-3 km storm-relative helicity
- 298 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.2
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KNEW 090705 RRA
TORNEW
LAC105-090740-
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
106 AM CST TUE MAR 9 1999
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS LA HAS ISSUED A...
* TORNADO WARNING FOR
- TANGIPAHOA PARISH IN SOUTHEASTERN LOUISIANA
* UNTIL 140 AM CST
* AT 103 AM CST... DOPPLER RADAR INDICATED A TORNADO 3 MILES
NORTHWEST OF INDEPENDENCE MOVING EAST AT 45 MPH.
* THE TORNADO IS EXPECTED TO AFFECT
AMITE BY 115 AM
IF YOU ARE IN THESE AREAS...SEEK SHELTER IN A SMALL INTERIOR ROOM
AWAY FROM WINDOWS
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 T HE 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 8, 10:56 PM CST | Severe Thunderstorm Warning | LIX | Pointe Coupee | 34 min |
| Mar 8, 11:17 PM CST | Severe Thunderstorm Warning | LIX | West Feliciana | 33 min |
| Mar 9, 12:28 AM CST | Tornado Warning | LIX | Saint Helena, Tangipahoa | 32 min |
| Mar 9, 12:57 AM CST | Tornado Warning | LIX | Saint Helena | 48 min |
| Mar 9, 1:43 AM CST | Severe Thunderstorm Warning | LIX | Saint Tammany | 32 min |
Nearby
Tornado Warnings in Louisiana, 1999Every tornado warning in 1999Tornadoes in 1999
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.