Alert archive / Louisiana / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 2, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Jan 7, 1998, 1:13 AM CST for Saint Tammany Parish, Louisiana; Hancock County, Mississippi. It was in force for 32 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
- Jan 7, 1998, 1:13 AM CST (07:13 UTC)
- Expired
- Jan 7, 1998, 1:45 AM CST
- In force
- 32 min
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
Counties Saint Tammany Parish, LA, Hancock County, MS
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jan 7, 1:45 AM CST | Tornado F0 | Slidell, LA | A tornado touched down briefly in the Ozone Woods subdivision snapping trees and downing power lines. |
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 nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 7.2 hours before the alert went out and 17 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
- 4 J/kg
- Mixed-layer CIN
- -252 J/kg
- Mixed-layer LCL
- 768 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 319 m²/s²
- 0-3 km storm-relative helicity
- 407 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted, in the capitals the NWS used until 2016.
843 WUUS1 KNEW 070714 RRA SVRNEW GMZ530-555-LAC103-MSC045-070745- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NEW ORLEANS LA 113 AM CST WED JAN 7 1998 THE NATIONAL WEATHER SERVICE IN NEW ORLEANS LA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 145 AM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEASTERN LOUISIANA ...ST TAMMANY PARISH AND LAKE PONTCHARTRAIN IN SOUTHERN MISSISSIPPI ...HANCOCK COUNTY AND ADJACENT COASTAL WATERS AT 110 AM CST...DOPPLER RADAR IN SLIDELL INDICATED A CLUSTER OF SEVERE THUNDERSTORMS OVER LAKE PONTCHARTAIN AND NEAR THE COAST OF HANCOCK COUNTY MOVING NORTHEAST AT 40 MILES AN HOUR. DAMAGING WIND GUSTS ARE EXPECTED WITH THESE STORMS AS THEY SPREAD ACROSS ST TAMMANY PARISH AND HANCOCK COUNTY. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 6, 8:32 PM CST | Flash Flood Warning | LIX | Ascension, East Baton Rouge, Livingston | 4 hr |
| Jan 6, 8:32 PM CST | Flash Flood Warning | LIX | Assumption, Saint James | 4 hr |
| Jan 6, 8:32 PM CST | Flash Flood Warning | LIX | Iberville, West Baton Rouge | 4 hr |
| Jan 6, 9:57 PM CST | Flash Flood Warning | LIX | East Feliciana, Pointe Coupee, West Feliciana | 4 hr |
| Jan 6, 9:57 PM CST | Flash Flood Warning | LIX | Saint Helena, Tangipahoa | 4 hr |
| Jan 6, 11:19 PM CST | Flash Flood Warning | LIX | Jefferson, Orleans, Plaquemines, Saint Bernard | 4 hr |
| Jan 6, 11:19 PM CST | Flash Flood Warning | LIX | Lafourche, Saint Charles, Saint John the Baptist, Terrebonne | 4 hr |
| Jan 7, 1:31 AM CST | Tornado Warning | LIX | Saint Tammany | 19 min |
| Jan 7, 1:42 AM CST | Flash Flood Warning | LIX | Saint Tammany | 3 hr |
| Jan 7, 5:09 AM CST | Flash Flood Warning | LIX | Saint Tammany | 116 min |
| Jan 6, 9:57 PM CST | Flash Flood Warning | LIX | Pike | 4 hr |
| Jan 6, 9:57 PM CST | Flash Flood Warning | LIX | Wilkinson | 4 hr |
| Jan 7, 3:42 AM CST | Severe Thunderstorm Warning | LIX | Harrison | 48 min |
| Jan 7, 4:25 AM CST | Flash Flood Warning | LIX | Harrison, Jackson | 3 hr |
| Jan 7, 7:30 AM CST | Flash Flood Warning | LIX | Harrison, Jackson | 90 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 1998Severe Thunderstorm Warnings in Mississippi, 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.