Alert archive / Louisiana / Flash Flood Warnings in 1998
Flash Flood Warning 12, NWS New Orleans, LA
NWS New Orleans, LA issued this flash flood warning at Jan 7, 1998, 5:09 AM CST for Saint Tammany Parish, Louisiana; Pearl River County, Mississippi. It was in force for 116 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jan 7, 1998, 5:09 AM CST (11:09 UTC)
- Expired
- Jan 7, 1998, 7:05 AM CST
- In force
- 116 min
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 11.2 hours before the alert went out and 38 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.
000 TTAA00 KNEW 071110 FFWNEW LAC103-MSC109-071305- BULLETIN - IMMEDIATE BROADCAST REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE NEW ORLEANS LA 509 AM CST WED JAN 7 1998 THE NATIONAL WEATHER SERVICE IN NEW ORLEANS LA HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 705 AM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEASTERN LOUISIANA ...ST TAMMANY PARISH IN SOUTHERN MISSISSIPPI ...PEARL RIVER COUNTY AT 5 AM CST...RADAR CONTINUED TO INDICATE MODERATE RAINFALL FALLING ACROSS THE SLIDELL AND PICAYUNE AREAS. THIS RAINFALL IS OCCURRING IN AN AREA THAT RECEIVED AROUND 5 INCHES SINCE MIDNIGHT. EXTENSIVE STREET FLOODING IS OCCURRING AND SOME STRUCTURES IN LOW LYING AREAS REMAIN AFFECTED. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.
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, 1:13 AM CST | Severe Thunderstorm Warning | LIX | Saint Tammany | 32 min |
| 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 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
Flash Flood Warnings in Louisiana, 1998Flash Flood Warnings in Mississippi, 1998Every flash flood 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; the sounding from the Mesonet's radiosonde archive.