Alert archive / Louisiana / Wind Advisories in 2009

Wind Advisory 4, NWS New Orleans, LA

April 5, 2009Saint Bernard Parish, Saint John the Baptist Parish, Louisiana

NWS New Orleans, LA issued this wind advisory at Apr 5, 2009, 3:21 AM CDT for Saint Bernard Parish, Saint John the Baptist Parish, Louisiana. It took effect at Apr 5, 2009, 11:00 PM CDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Apr 5, 2009, 3:21 AM CDT (08:21 UTC)
In effect from
Apr 5, 2009, 11:00 PM CDT
Expired
Apr 6, 2009, 8:00 AM CDT
In force
9 hr
Issued by
NWS New Orleans, LA

Counties Saint Bernard Parish, LA, Saint John the Baptist Parish, LA

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 8.4 hours before the alert went out and 294 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, Lake Charles Mun, LA at 00:00Z on 2009-04-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 22 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, Lake Charles Mun, LA at 00:00Z on 2009-04-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 square meters per square second.1939587897117Sfc1 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
22 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
875 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
161 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 5, 4:33 AM CDTGale WarningLIX29 hr
Apr 5, 4:33 AM CDTSmall Craft AdvisoryLIX20 hr
Apr 5, 4:33 AM CDTSmall Craft AdvisoryLIX56 hr
Apr 5, 11:45 AM CDTFreeze WatchLIXEast Baton Rouge, East Feliciana, Pointe Coupee, Saint Helena, Washington, West Baton Rouge and 1 more28 hr

Nearby

Wind Advisories in Louisiana, 2009Every wind advisory in 2009

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.