Alert archive / Louisiana / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 74, NWS New Orleans, LA

June 12, 2006Jefferson Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Jun 12, 2006, 8:25 PM CDT for Jefferson Parish, Louisiana. It was in force for 57 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
Jun 12, 2006, 8:25 PM CDT (01:25 UTC)
Expired
Jun 12, 2006, 9:22 PM CDT
In force
57 min
Issued by
NWS New Orleans, LA
Area
Counties, with a storm outline in the text

County Jefferson Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 1.4 hours before the alert went out and 74 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 2006-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2792 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 2006-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 70 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
2792 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
1421 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
70 m²/s²
0-3 km storm-relative helicity
191 m²/s²
Significant tornado parameter
0.6
Supercell composite
6.3

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 7:09 PM CDTSpecial Marine WarningLIX66 min
Jun 12, 7:53 PM CDTSevere Thunderstorm WarningLIXOrleans, Plaquemines, Saint Bernard52 min
Jun 12, 8:00 PM CDTSevere Thunderstorm WarningLIXSaint Charles60 min
Jun 12, 8:16 PM CDTSpecial Marine WarningLIX29 min
Jun 12, 9:02 PM CDTSevere Thunderstorm WarningLIXLafourche, Terrebonne58 min
Jun 12, 9:50 PM CDTSpecial Marine WarningLIX115 min
Jun 13, 12:27 AM CDTSpecial Marine WarningLIX2 hr
Jun 13, 1:33 AM CDTSpecial Marine WarningLIX59 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2006Every severe thunderstorm warning in 2006

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.