Alert archive / Louisiana / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 307, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Dec 23, 1997, 8:46 AM CST for Lafourche Parish, Terrebonne Parish, Louisiana. It was in force for 64 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
- Dec 23, 1997, 8:46 AM CST (14:46 UTC)
- Expired
- Dec 23, 1997, 9:50 AM CST
- In force
- 64 min
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
Counties Lafourche Parish, LA, Terrebonne Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 2.8 hours before the alert went out and 128 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1986 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 270 m²/s²
- 0-3 km storm-relative helicity
- 387 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.0
The text
As transmitted, in the capitals the NWS used until 2016.
958 WUUS1 KNEW 231442 RRA SVRNEW LAC057-109-231550- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NEW ORLEANS LA 846 AM CST TUE DEC 23 1997 THE NATIONAL WEATHER SERVICE IN NEW ORLEANS LA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 950 AM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEASTERN LOUISIANA ...NORTHERN TERREBONNE PARISH ...NORTHERN LAFOURCHE PARISH AT 840 AM CST RADAR SHOWED A SEVEFRE THUNDERSTORM WITH LARGE HAIL ABOUT 9 MILES SOUTHWEST OF HOUMA MOVING NORTHEAST ABOUT 20 MILES AN HOUR. TOWNS IN THE PATH OF THE SEVERE THUNDERSTORM INCLUDE HOUMA... AND LAFOURCHE. 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.
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, Dec 23, 7:37 AM CST, 1 hour 9 minutes before
LAZ034>040-046>050-056>070-MSZ068>071-077-080>082-231700- THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS LA 737 AM CST TUE DEC 23 1997 A PACIFIC LOW PRESSURE SYSTEM WILL MOVE EAST INTO SOUTH TEXAS THEN NORTHEAST TO NORTHERN LOUISIANA DURING THE NEXT 24 HOURS. COPIOUS MOISTURE, AN UPPER LEVEL LOW, AND A SURFACE COLD FRONT WILL CAUSE SCATTERED TO NUMEROUS THUNDERSTORMS AROUND THE FORECAST AREA MAINLY THIS AFTERNOON AND TONIGHT. SCATTERED THUNDERSTORMS WILL AFFECT SOUTHCENTRAL AND SOUTHEAST LOUISIANA PLUS SOUTHWEST MISSISSIPPI AND THE MISSISSIPPI GULF COAST THIS MORNING THEN BECOME MORE NUMEROUS THIS AFTERNOON AND TONIGHT. HEAVY RAIN CAN BE EXPECTED IN STORMS. THERE IS A POTENTIAL FOR DAMAGING HIGH WINDS AND HAIL IN THE STRONGER STORMS. AREA RESIDENTS ARE URGED TO KEEP TUNED FOR THE LATEST UPDATES ON THIS WEATHER SITUATION. THIS AND OTHER WEATHER INFORMATION CAN BE ACCESSED THROUGH NOAA WEATHER RADIO...LOCAL TELEVISION AND RADIO STATIONS...CABLE OUTLETS...OR FROM OUR INTERNET WEB PAGE AT HTTP://WWW.SRH.NOAA.GOV (LOWER CASE) UNDER FORECAST OFFICES.
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.