Alert archive / Louisiana / Flash Flood Warnings in 1997
Flash Flood Warning 22, NWS New Orleans, LA
NWS New Orleans, LA issued this flash flood warning at Jul 8, 1997, 3:03 PM CDT for Saint Tammany Parish, Louisiana. It was in force for 117 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
- Jul 8, 1997, 3:03 PM CDT (20:03 UTC)
- Expired
- Jul 8, 1997, 5:00 PM CDT
- In force
- 117 min
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
County Saint Tammany Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 8.1 hours before the alert went out and 30 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
- 1656 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 712 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 47 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KNEW 082004 FFWNEW LAC103-082200- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE NEW ORLEANS LA 303 PM CDT TUE JUL 8 1997 THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 500 PM CDT FOR RESIDENTS IN THE FOLLOWING LOCATION... IN SOUTHEAST LOUISIANA ...EASTERN ST. TAMMANY PARISH AT 300 PM CDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS PRODUCING TORRENTIAL RAINFALL ACROSS THE SLIDELL AREA OF ST. TAMMANY PARISH. THE SLIDELL POLICE DEPARTMENT REPORTED WIDESPREAD STREET FLOODING... GENERALLY OVER THE NORTH PORTION OF THE CITY. NATIONAL WEATHER SERVICE RADARS EXTIMATED NEARLY 4 INCHES OF RAINFALL IN THE AREA. AN ADDITIONAL INCH OF RAIN MAY FALL BEFORE THE RAIN TAPERS OFF. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT. IT'S IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS SHOULDT AVOID CAMPING ALONG STREAMS OR CREEKS DURING THREATENING RAINS. &
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jul 8, 11:15 AM CDT, 3 hours 48 minutes before
LAZ034>040-046>049-056>070-MSZ068>071-080>082-091600- THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS/BATON ROUGE LA 1115 AM CDT TUE JUL 8 1997 SCATTERED THUNDERSTORMS WILL PRODUCE LOCALLY HEAVY RAINFALL AND POSSIBLE WATERSPOUTS AGAIN TODAY ACROSS SOUTHEAST LOUISIANA AND SOUTH MISSISSIPPI. WARM...HUMID AND UNSTABLE AIR REMAINS IN PLACE ACROSS THE CENTRAL GULF COAST REGION TODAY. UPPER LEVEL DISTURBANCES AND DAYTIME HEATING WILL LEAD TO SCATTERED THUNDERSTORMS THROUGH THE AFTERNOON HOURS WITH ACTIVITY DIMINISHING DURING THE EVENING. SLOW MOVEMENT OF THE STORMS COULD PRODUCE LOCAL RAINFALL AMOUNTS OF UP TO 2 INCHES IN AN HOUR OR LESS AND POSSIBLE STREET FLOODING IN URBAN AND POORLY DRAINED AREAS. FUNNEL CLOUDS WERE REPORTED WITH SOME OF THE STRONGER THUNDERSTORMS ON MONDAY...MAINLY OVER WATER. CONDITIONS REMAIN FAVORABLE FOR FUNNEL CLOUDS AND WATERSPOUTS THROUGH THIS AFTERNOON OVER THE NEAR SHORE WATERS OF THE COASTAL WATERS AND NEAR AREA LAKES AND RIVERS.
Special weather statement, Jul 8, 11:20 AM CDT, 3 hours 43 minutes before
LAZ034>040-046>049-056>070-MSZ068>071-080>082-091600- THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS/BATON ROUGE LA 1115 AM CDT TUE JUL 8 1997 SCATTERED THUNDERSTORMS WILL PRODUCE LOCALLY HEAVY RAINFALL AND POSSIBLE WATERSPOUTS AGAIN TODAY ACROSS SOUTHEAST LOUISIANA AND SOUTH MISSISSIPPI. WARM...HUMID AND UNSTABLE AIR REMAINS IN PLACE ACROSS THE CENTRAL GULF COAST REGION TODAY. UPPER LEVEL DISTURBANCES AND DAYTIME HEATING WILL LEAD TO SCATTERED THUNDERSTORMS THROUGH THE AFTERNOON HOURS WITH ACTIVITY DIMINISHING DURING THE EVENING. SLOW MOVEMENT OF THE STORMS COULD PRODUCE LOCAL RAINFALL AMOUNTS OF UP TO 2 INCHES IN AN HOUR OR LESS AND POSSIBLE STREET FLOODING IN URBAN AND POORLY DRAINED AREAS. FUNNEL CLOUDS WERE REPORTED WITH SOME OF THE STRONGER THUNDERSTORMS ON MONDAY...MAINLY OVER WATER. CONDITIONS REMAIN FAVORABLE FOR FUNNEL CLOUDS AND WATERSPOUTS THROUGH THIS AFTERNOON OVER THE NEAR SHORE WATERS OF THE COASTAL WAT*ERS AND NEAR AREA LAKES AND RIVERS.
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 2:24 PM CDT | Flash Flood Warning | LIX | Plaquemines | 96 min |
Nearby
Flash Flood Warnings in Louisiana, 1997Every flash flood warning in 1997
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.