Alert archive / Louisiana / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 409, NWS New Orleans, LA

December 17, 1995Saint Tammany Parish, Washington Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Dec 17, 1995, 4:12 PM CST for Saint Tammany Parish, Washington Parish, Louisiana. It was in force for 63 min.

The area

The counties it named.

The facts

Issued
Dec 17, 1995, 4:12 PM CST (22:12 UTC)
Expired
Dec 17, 1995, 5:15 PM CST
In force
63 min
Issued by
NWS New Orleans, LA
Area
Whole counties

Counties Saint Tammany Parish, LA, Washington Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.2 hours before the alert went out and 51 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 1995-12-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 297 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 1995-12-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 square meters per square second.193958Sfc1 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
297 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
623 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
53 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 17, 1:44 PM CSTSevere Thunderstorm WarningLIXPointe Coupee, West Feliciana46 min
Dec 17, 2:08 PM CSTTornado WarningLIXPointe Coupee, West Feliciana37 min
Dec 17, 2:30 PM CSTSevere Thunderstorm WarningLIXEast Baton Rouge, West Baton Rouge60 min
Dec 17, 2:46 PM CSTTornado WarningLIXEast Baton Rouge29 min
Dec 17, 2:49 PM CSTTornado WarningLIXEast Feliciana41 min
Dec 17, 3:02 PM CSTSevere Thunderstorm WarningLIXLivingston, Saint Helena43 min
Dec 17, 3:11 PM CSTTornado WarningLIXLivingston, Saint Helena34 min
Dec 17, 3:18 PM CSTSevere Thunderstorm WarningLIXAscension27 min
Dec 17, 3:30 PM CSTTornado WarningLIXTangipahoa45 min
Dec 17, 3:15 PM CSTTornado WarningLIXAmite30 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1995Every severe thunderstorm warning in 1995

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.