Alert archive / Louisiana / Extreme Wind Warnings in 2021
Extreme Wind Warning 3, NWS New Orleans, LA
NWS New Orleans, LA issued this extreme wind warning at Aug 29, 2021, 1:26 PM CDT for 8 parishes in Louisiana. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 29, 2021, 1:26 PM CDT (18:26 UTC)
- Expired
- Aug 29, 2021, 4:30 PM CDT
- In force
- 3 hr
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
Counties Assumption Parish, LA, Jefferson Parish, LA, Lafourche Parish, LA, Plaquemines Parish, LA, Saint Charles Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Terrebonne Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 6.4 hours before the alert went out and 128 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3256 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- -55 m²/s²
- 0-3 km storm-relative helicity
- 85 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.3
The text
As transmitted.
977
WFUS54 KLIX 291826
EWWLIX
LAC007-051-057-075-089-093-095-109-292130-
/O.NEW.KLIX.EW.W.0003.210829T1826Z-210829T2130Z/
BULLETIN - EAS ACTIVATION REQUESTED
Extreme Wind Warning
National Weather Service New Orleans LA
126 PM CDT Sun Aug 29 2021
The National Weather Service in New Orleans has issued a
* Extreme Wind Warning for...
St. John The Baptist Parish in southeastern Louisiana...
Southeastern St. James Parish in southeastern Louisiana...
St. Charles Parish in southeastern Louisiana...
Terrebonne Parish in southeastern Louisiana...
Lafourche Parish in southeastern Louisiana...
Central Jefferson Parish in southeastern Louisiana...
Western Plaquemines Parish in southeastern Louisiana...
Southeastern Assumption Parish in southeastern Louisiana...
* Until 430 PM CDT.
* At 123 PM CDT, National Weather Service Doppler radar and surface
observations indicated extreme winds, associated with the eyewall
of Hurricane Ida, were moving across coastal southeastern
Louisiana. THIS IS AN EXTREMELY DANGEROUS AND LIFE-THREATENING
SITUATION!
* Locations impacted include...
Houma, Thibodaux, Reserve, Cut Off, Galliano, Larose, Hahnville,
Laplace, Gramercy, Lutcher, Lockport, Golden Meadow, Jean Lafitte,
Mathews, Schriever, Montz, Chauvin, Dulac, Luling and Garyville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Widespread destructive winds of 115 to 135 mph will spread across
St. John The Baptist Parish, St. James Parish, St. Charles Parish,
Terrebonne Parish, Lafourche Parish, Jefferson Parish, Plaquemines
Parish, Assumption Parish, producing swaths of tornado-like damage.
TAKE COVER NOW! Treat these imminent extreme winds as if a tornado
was approaching and move immediately to the safe room in your
shelter. Take action now to protect your life!
The safest place to be during a major landfalling hurricane is in a
reinforced interior room away from windows. Get under a table or
other piece of sturdy furniture. Use mattresses, blankets or pillows
to cover your head and body. Remain in place through the passage of
these life-threatening conditions.
&&
A Tornado Watch remains in effect until 700 PM CDT for southeastern
Louisiana.
LAT...LON 2923 9097 2923 9087 2924 9088 2926 9103
2954 9127 2963 9108 2979 9109 3018 9047
2941 8982 2949 8989 2944 9001 2931 8997
2931 8998 2934 8999 2914 9024 2935 9044
2913 9065 2914 9065 2910 9084
TIME...MOT...LOC 1823Z 129DEG 9KT 2926 9037
$$
KleinThe office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 6:23 AM CDT | Special Marine Warning | LIX | 22 min | |
| Aug 29, 7:49 AM CDT | Extreme Wind Warning | LIX | Jefferson, Lafourche, Plaquemines, Saint Bernard, Saint Charles, Terrebonne | 3 hr |
| Aug 29, 10:30 AM CDT | Extreme Wind Warning | LIX | Jefferson, Lafourche, Plaquemines, Saint Bernard, Saint Charles, Terrebonne | 3 hr |
| Aug 29, 2:42 PM CDT | Special Marine Warning | LIX | 18 min | |
| Aug 29, 3:39 PM CDT | Flash Flood Warning | LIX | Lafourche, Terrebonne | 7 hr |
| Aug 29, 4:08 PM CDT | Flash Flood Warning | LIX | Jefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles, Saint John the Baptist | 8 hr |
| Aug 29, 4:23 PM CDT | Extreme Wind Warning | LIX | Jefferson, Lafourche, Saint Charles, Saint James, Saint John the Baptist, Terrebonne | 2 hr |
| Aug 29, 5:01 PM CDT | Flash Flood Warning | LIX | Plaquemines | 6 hr |
| Aug 29, 5:04 PM CDT | Special Marine Warning | LIX | 26 min | |
| Aug 29, 6:04 PM CDT | Special Marine Warning | LIX | 26 min | |
| Aug 29, 6:09 PM CDT | Flash Flood Warning | LIX | Saint Tammany | 8 hr |
| Aug 29, 6:21 PM CDT | Flash Flood Warning | LIX | Saint Tammany | 16 hr |
| Aug 29, 6:25 PM CDT | Tornado Warning | LIX | Orleans, Saint Bernard, Saint Tammany | 35 min |
| Aug 29, 6:33 PM CDT | Special Marine Warning | LIX | 57 min | |
| Aug 29, 6:54 PM CDT | Tornado Warning | LIX | Saint Tammany | 36 min |
Nearby
Extreme Wind Warnings in Louisiana, 2021Every extreme wind warning in 2021
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.