Alert archive / Louisiana / Tornado Warnings in 1990
Tornado Warning 10, NWS New Orleans, LA
NWS New Orleans, LA issued this tornado warning at Mar 29, 1990, 10:44 PM CST for Jefferson Parish, Saint Charles Parish, Louisiana. It was in force for 61 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 29, 1990, 10:44 PM CST (04:44 UTC)
- Expired
- Mar 29, 1990, 11:45 PM CST
- In force
- 61 min
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
Counties Jefferson Parish, LA, Saint Charles Parish, LA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 29, 10:55 PM CST | Thunderstorm Wind 0 | St. Charles, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 4.7 hours before the alert went out and 72 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
- 16 J/kg
- Mixed-layer CIN
- -222 J/kg
- Mixed-layer LCL
- 1008 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 158 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 300446 TORNEW LAC051-089-300545- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE NEW ORLEANS LA 1044 PM CST THU MAR 29 1990 THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 1145 PM CST FOR RESIDENTS IN THE FOLLOWING PARISHES IN SOUTHEAST LOUISIANA ...NORTHERN JEFFERSON PARISH...ST.CHARLES PARISH THE NATIONAL WEATHER SERVICE HAS RECEIVED REPORTS OF TWO TORNADO TOUCHDOWNS WEST AND NORTH OF HOUMA BETWEEN 1000 AND 1015 PM. EXTENSIVE DAMAGE HAS BEEN REPORTED AT A TRAILER PARK NEAR GRAY LOUISIANA. THE TORNADOES ARE MOVING TOWARD THE EAST AT ABOUT 40 MPH. THIS IS A DANGEROUS STORM SITUATION. ACT QUICKLY. IF YOU ARE IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF AVAILABLE. OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE. AVOID WINDOWS. ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING OR GET INTO A DITCH OR CUL0VERT.
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 29, 8:06 PM CST | Severe Thunderstorm Warning | LIX | Iberia, Saint Martin, St. Mary | 69 min |
| Mar 29, 8:24 PM CST | Severe Thunderstorm Warning | LIX | Saint Landry | 51 min |
| Mar 29, 8:58 PM CST | Severe Thunderstorm Warning | LIX | Iberville, Pointe Coupee | 62 min |
| Mar 29, 9:17 PM CST | Severe Thunderstorm Warning | LIX | Assumption, Lafourche, Saint James, Terrebonne | 58 min |
| Mar 29, 9:25 PM CST | Severe Thunderstorm Warning | LIX | West Baton Rouge, West Feliciana | 65 min |
| Mar 29, 9:43 PM CST | Severe Thunderstorm Warning | LIX | Ascension, East Baton Rouge, East Feliciana | 62 min |
| Mar 29, 10:11 PM CST | Severe Thunderstorm Warning | LIX | Livingston, Saint Helena | 64 min |
| Mar 29, 10:17 PM CST | Severe Thunderstorm Warning | LIX | Lafourche, Saint Charles, Saint John the Baptist | 58 min |
| Mar 29, 10:17 PM CST | Severe Thunderstorm Warning | LIX | Terrebonne | 58 min |
| Mar 29, 10:34 PM CST | Tornado Warning | LIX | Lafourche | 26 min |
| Mar 29, 10:56 PM CST | Tornado Warning | LIX | Orleans | 64 min |
| Mar 29, 11:24 PM CST | Tornado Warning | LIX | Saint Tammany | 66 min |
| Mar 30, 12:22 AM CST | Tornado Warning | LIX | Saint Tammany | 48 min |
Nearby
Tornado Warnings in Louisiana, 1990Every tornado warning in 1990Tornadoes in 1990
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.