Alert archive / Louisiana / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 28, NWS New Orleans, LA

March 25, 1994Saint Tammany Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Mar 25, 1994, 12:29 AM CST for Saint Tammany Parish, Louisiana. It was in force for 61 min.

The area

The counties it named.

The facts

Issued
Mar 25, 1994, 12:29 AM CST (06:29 UTC)
Expired
Mar 25, 1994, 1:30 AM CST
In force
61 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 00:00Z, 6.5 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.

Skew-T log-pSkew-T log-p diagram, Slidell Radar S, LA at 00:00Z on 1994-03-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2299 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 00:00Z on 1994-03-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 square meters per square second.19395878Sfc1 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
2299 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
631 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
53 m²/s²
Significant tornado parameter
1.0
Supercell composite
3.8

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
Mar 24, 10:31 PM CSTSevere Thunderstorm WarningLIXEast Feliciana, West Feliciana59 min
Mar 24, 10:51 PM CSTSevere Thunderstorm WarningLIXEast Feliciana, Saint Helena53 min
Mar 24, 10:57 PM CSTSevere Thunderstorm WarningLIXTangipahoa63 min
Mar 24, 11:11 PM CSTSevere Thunderstorm WarningLIXWashington64 min
Mar 24, 11:54 PM CSTSevere Thunderstorm WarningLIXTangipahoa66 min
Mar 25, 12:54 AM CSTSevere Thunderstorm WarningLIXWashington66 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1994Every severe thunderstorm warning in 1994

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.