Alert archive / Louisiana / Tornado Warnings in 1992

Tornado Warning 11, NWS New Orleans, LA

July 16, 1992Saint John the Baptist Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Jul 16, 1992, 3:56 PM CDT for Saint John the Baptist Parish, Louisiana. It was in force for 64 min.

The area

The counties it named.

The facts

Issued
Jul 16, 1992, 3:56 PM CDT (20:56 UTC)
Expired
Jul 16, 1992, 5:00 PM CDT
In force
64 min
Issued by
NWS New Orleans, LA
Area
Whole counties

County Saint John the Baptist Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.9 hours before the alert went out and 75 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.

Skew-T log-pSkew-T log-p diagram, Slidell Radar S, LA at 12:00Z on 1992-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 464 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 1992-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
464 J/kg
Mixed-layer CIN
-48 J/kg
Mixed-layer LCL
864 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
155 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KNEW 162059
TORNEW
LAC095-162200-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
356 PM CDT THU JUL 16 1992
 
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
TORNADO AND SPECIAL MARINE WARNING EFFECTIVE UNTIL  500 PM CDT
FOR RESIDENTS IN THE FOLLOWING PARISHES
 
IN SOUTHEAST LOUISIANA
 
   ...ST.JOHN.BAPTIST PARISH
 
ALSO FOR LAKE MAUREPAS AND THE WEST PORTION OF LAKE PONTCHARTRAIN.
 
 
AT 340 PM CDT A TORNADO WAS REPORTED ABOUT 9 MILES WEST OF LAPLACE
MOVING TOWARD THE NORTH NORTHEAST AT 10 MPH.
 
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING.  AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH
OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
 
THESE THUNDERSTORMS WILL PRODUCE WINDS EXCEEDING GALE FORCE...
ROUGH SEAS... HEAVY RAINFALL... DANGEROUS LIGHTNING AND THE
POSSIBILITY OF WATERSPOUTS. SMALL CRAFT SHOULD SEEK SAFE HARBOR
IMMEDIATELY.

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 15, 7:14 PM CDTTornado WarningLIXOrleans21 min

Nearby

Tornado Warnings in Louisiana, 1992Every tornado warning in 1992Tornadoes in 1992

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.