Alert archive / Louisiana / Wind Advisories in 2024

Wind Advisory 11, NWS New Orleans, LA

April 29, 202419 parishes in Louisiana; 8 counties in Mississippi

NWS New Orleans, LA issued this wind advisory at Apr 29, 2024, 2:30 PM CDT for 19 parishes in Louisiana; 8 counties in Mississippi. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: Apr 29, 2024, 2:30 PM CDT (19:30 UTC)
Expired: Apr 29, 2024, 11:07 PM CDT
In force: 9 hr
Issued by: NWS New Orleans, LA

All 27 counties

Ascension Parish, LA, Assumption Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Iberville Parish, LA, Jefferson Parish, LA, Livingston Parish, LA, Orleans Parish, LA, Plaquemines Parish, LA, Pointe Coupee Parish, LA, Saint Bernard Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Tammany Parish, LA, Tangipahoa Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Amite County, MS, Hancock County, MS, Harrison County, MS, Jackson County, MS, Pearl River County, MS, Pike County, MS, Walthall County, MS, Wilkinson County, MS

The radar

The Hammond radar (KHDC), 6 km from the middle of the area, began a volume at 19:29 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 7.5 hours before the alert went out and 76 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 747 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 551 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 29, 2:58 AM CDT	Coastal Flood Advisory	LIX	Orleans, Saint Bernard, Saint Tammany	16 hr
Apr 29, 5:27 AM CDT	Special Weather Statement	LIX	Pointe Coupee, West Feliciana	48 min
Apr 29, 6:05 AM CDT	Special Weather Statement	LIX	West Feliciana	40 min
Apr 29, 6:26 AM CDT	Special Weather Statement	LIX	Pointe Coupee	34 min
Apr 29, 6:47 AM CDT	Special Weather Statement	LIX	East Baton Rouge, East Feliciana, West Baton Rouge, West Feliciana	43 min
Apr 29, 7:20 AM CDT	Special Weather Statement	LIX	Iberville, West Baton Rouge	25 min
Apr 29, 7:36 AM CDT	Special Weather Statement	LIX	East Baton Rouge, Saint Helena	39 min
Apr 29, 7:39 AM CDT	Special Weather Statement	LIX	Iberville, Livingston	51 min
Apr 29, 8:16 AM CDT	Special Weather Statement	LIX	Livingston, Tangipahoa	59 min
Apr 29, 8:25 AM CDT	Special Weather Statement	LIX	Ascension, Assumption, Saint James	65 min
Apr 29, 8:58 AM CDT	Special Marine Warning	LIX		62 min
Apr 29, 9:06 AM CDT	Special Weather Statement	LIX	Saint Tammany, Washington	54 min
Apr 29, 9:17 AM CDT	Special Weather Statement	LIX	Saint Charles, Saint James, Saint John the Baptist, Terrebonne	58 min
Apr 29, 9:55 AM CDT	Special Weather Statement	LIX	Saint Tammany	65 min
Apr 29, 9:57 AM CDT	Special Marine Warning	LIX		63 min
Apr 29, 10:05 AM CDT	Special Weather Statement	LIX	Lafourche, Orleans, Saint Charles, Saint John the Baptist, Terrebonne	55 min
Apr 29, 10:12 AM CDT	Areal Flood Advisory	LIX	Jefferson, Orleans, Saint Bernard	2 hr
Apr 29, 10:58 AM CDT	Special Marine Warning	LIX		62 min
Apr 29, 11:04 AM CDT	Special Weather Statement	LIX	Jefferson, Lafourche, Orleans, Saint Charles, Terrebonne	56 min
Apr 29, 11:21 AM CDT	Special Marine Warning	LIX		54 min
Apr 29, 11:41 AM CDT	Special Weather Statement	LIX	Orleans	34 min
Apr 29, 11:49 AM CDT	Special Weather Statement	LIX	Jefferson	41 min
Apr 29, 11:56 AM CDT	Special Weather Statement	LIX	Jefferson, Lafourche, Orleans	64 min
Apr 29, 11:59 AM CDT	Special Marine Warning	LIX		61 min
Apr 29, 12:13 PM CDT	Special Marine Warning	LIX		62 min
Apr 29, 12:55 PM CDT	Special Marine Warning	LIX		65 min
Apr 29, 12:58 PM CDT	Special Weather Statement	LIX	Jefferson, Plaquemines	62 min
Apr 29, 1:13 PM CDT	Special Marine Warning	LIX		62 min
Apr 29, 1:58 PM CDT	Special Marine Warning	LIX		62 min
Apr 29, 2:23 PM CDT	Gale Warning	LIX		11 hr
Apr 29, 10:54 AM CDT	Special Weather Statement	LIX	Hancock, Harrison, Pearl River	66 min
Apr 29, 11:53 AM CDT	Special Weather Statement	LIX	Hancock, Harrison	67 min
Apr 29, 12:52 PM CDT	Special Weather Statement	LIX	Harrison	68 min
Apr 29, 2:00 PM CDT	Special Weather Statement	LIX	Harrison	90 min

Nearby

Wind Advisories in Louisiana, 2024 Wind Advisories in Mississippi, 2024 Every wind advisory in 2024

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; radar from the NEXRAD Level II archive.