Alert archive / Louisiana / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 286, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Oct 25, 1997, 1:08 PM CDT for Saint Tammany Parish, Louisiana. It was in force for 67 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
- Oct 25, 1997, 1:08 PM CDT (18:08 UTC)
- Expired
- Oct 25, 1997, 2:15 PM CDT
- In force
- 67 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, 6.1 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
- 2541 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 486 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 174 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 2.2
- Supercell composite
- 12.5
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm 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, Oct 25, 10:11 AM CDT, 2 hours 57 minutes before
LAZ034>040-046>049-056>070-MSZ068>071-080>082-261500- THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS/BATON ROUGE LA 1100 AM CDT SAT OCT 25 1997 THE STORM PREDICTION CENTER IN NORMAN OKLAHOMA IS FORECASTING AN OUTBREAK OF SEVERE THUNDERSTORMS AND TORNADOES ACROSS MOST OF THE LOWER MISSISSIPPI VALLEY THIS AFTERNOON AND TONIGHT.. AN UPPER AIR TROUGH IS MOVING EASTWARD INTO TEXAS. STRONG LOW LEVEL FLOW OFF THE GULF OF MEXICO IS BRING IN WARM MOIST UNSTABLE AIR INTO THE REGION. A STRONG JET REMAINS IN PLACE OVER THE CENTRAL GULF COAST. AS THE UPPER AIR TROUGH APPROACHES A FEW SEVERE THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS SOUTHEAST LOUISIANA AND PORTIONS OF SOUTHWEST MISSISSIPPI AND THE MISSISSIPPI GULF COAST. PERSONS IN THE THREATENED AREAS ARE URGED TO REVIEW SEVERE WEATHER SAFETY RULES AND TUNE IN TO NOAA WEATHER RADIO...LOCAL RADIO AND TV STATIONS...CABLE OUTLETS...OR CONTACT OUT INTERNET HOMEPAGE AT HTTP://WWW.SRH4.NOAA.GOV UNDER "FORECAST OFFICES" FOR FURTHER INFORMATION ON CURRENT WEATHER CONDITIONS. 23
Special weather statement, Oct 25, 11:00 AM CDT, 2 hours 8 minutes before
LAZ034>040-046>049-056>070-MSZ068>071-080>082-261500- THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS/BATON ROUGE LA 1100 AM CDT SAT OCT 25 1997 THE STORM PREDICTION CENTER IN NORMAN OKLAHOMA IS FORECASTING AN OUTBREAK OF SEVERE THUNDERSTORMS AND TORNADOES ACROSS MOST OF THE LOWER MISSISSIPPI VALLEY THIS AFTERNOON AND TONIGHT.. AN UPPER AIR TROUGH IS MOVING EASTWARD INTO TEXAS. STRONG LOW LEVEL FLOW OFF THE GULF OF MEXICO IS BRING IN WARM MOIST UNSTABLE AIR INTO THE REGION. A STRONG JET REMAINS IN PLACE OVER THE CENTRAL GULF COAST. AS THE UPPER AIR TROUGH APPROACHES A FEW SEVERE THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS SOUTHEAST LOUISIANA AND PORTIONS OF SOUTHWEST MISSISSIPPI AND THE MISSISSIPPI GULF COAST. PERSONS IN THE THREATENED AREAS ARE URGED TO REVIEW SEVERE WEATHER SAFETY RULES AND TUNE IN TO NOAA WEATHER RADIO...LOCAL RADIO AND TV STATIONS...CABLE OUTLETS...OR CONTACT OUT INTERNET HOMEPAGE AT HTTP://WWW.SRH.NOAA.GOV UNDER FORECAST OFFICES FOR FURTHER INFORMATION ON CURRENT WEATHER CONDITIONS. 23
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 25, 12:22 PM CDT | Severe Thunderstorm Warning | LIX | Livingston, Tangipahoa | 68 min |
| Oct 25, 1:30 PM CDT | Severe Thunderstorm Warning | LIX | Washington | 30 min |
| Oct 25, 1:30 PM CDT | Severe Thunderstorm Warning | LIX | Livingston | 30 min |
| Oct 25, 2:53 PM CDT | Tornado Warning | LIX | Pearl River | 37 min |
| Oct 25, 3:34 PM CDT | Tornado Warning | LIX | Hancock, Harrison | 56 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 1997Every severe thunderstorm 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.