Alert archive / Louisiana / Tornado Warnings in 2021
Tornado Warning 20, NWS New Orleans, LA
NWS New Orleans, LA issued this tornado warning at May 10, 2021, 3:41 AM CDT for Orleans Parish, Plaquemines Parish, Saint Bernard Parish, Louisiana. It was in force for 18 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 10, 2021, 3:41 AM CDT (08:41 UTC)
- Expired
- May 10, 2021, 3:59 AM CDT
- In force
- 18 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
Counties Orleans Parish, LA, Plaquemines Parish, LA, Saint Bernard Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 8.7 hours before the alert went out and 55 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
- 186 J/kg
- Mixed-layer CIN
- -87 J/kg
- Mixed-layer LCL
- 1292 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted.
260
WFUS54 KLIX 100841
TORLIX
LAC071-075-087-100915-
/O.NEW.KLIX.TO.W.0020.210510T0841Z-210510T0915Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New Orleans LA
341 AM CDT Mon May 10 2021
The National Weather Service in New Orleans has issued a
* Tornado Warning for...
Southwestern St. Bernard Parish in southeastern Louisiana...
South central Orleans Parish in southeastern Louisiana...
Northwestern Plaquemines Parish in southeastern Louisiana...
* Until 415 AM CDT.
* At 341 AM CDT, a severe thunderstorm capable of producing a tornado
was located near Violet, or near Belle Chasse, moving east at 25
mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be near...
Poydras and Violet around 345 AM CDT.
Shell Beach around 415 AM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to an interior room on the lowest floor of a
sturdy building. Avoid windows. If you are outdoors, in a mobile
home, or in a vehicle, move to the closest substantial shelter and
protect yourself from flying debris.
&&
LAT...LON 2966 8969 2981 9005 2998 8998 2993 8975
2987 8968 2989 8959 2987 8948 2972 8955
2976 8958 2972 8960 2975 8965 2972 8961
2971 8964 2971 8957 2970 8956 2969 8963
2966 8957 2968 8966 2964 8964
TIME...MOT...LOC 0841Z 289DEG 22KT 2988 8994
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$2 follow-up statements
062
WWUS54 KLIX 100852
SVSLIX
Severe Weather Statement
National Weather Service New Orleans LA
352 AM CDT Mon May 10 2021
LAC071-100901-
/O.CAN.KLIX.TO.W.0020.000000T0000Z-210510T0915Z/
Orleans LA-
352 AM CDT Mon May 10 2021
...THE TORNADO WARNING FOR SOUTH CENTRAL ORLEANS PARISH IS
CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
LAT...LON 2981 8994 2987 8992 2987 8991 2988 8991
2994 8989 2995 8984 2993 8981 2993 8975
2987 8970 2987 8960 2975 8961 2976 8963
2974 8965
TIME...MOT...LOC 0851Z 271DEG 21KT 2988 8987
$$
LAC075-087-100915-
/O.CON.KLIX.TO.W.0020.000000T0000Z-210510T0915Z/
St. Bernard LA-Plaquemines LA-
352 AM CDT Mon May 10 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 AM CDT FOR WEST
CENTRAL ST. BERNARD AND NORTHERN PLAQUEMINES PARISHES...
At 351 AM CDT, a severe thunderstorm capable of producing a tornado
was located over Poydras, or 7 miles southeast of Chalmette, moving
east at 25 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Shell Beach around 420 AM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to an interior room on the lowest floor of a
sturdy building. Avoid windows. If you are outdoors, in a mobile
home, or in a vehicle, move to the closest substantial shelter and
protect yourself from flying debris.
&&
LAT...LON 2981 8994 2987 8992 2987 8991 2988 8991
2994 8989 2995 8984 2993 8981 2993 8975
2987 8970 2987 8960 2975 8961 2976 8963
2974 8965
TIME...MOT...LOC 0851Z 271DEG 21KT 2988 8987
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$819
WWUS54 KLIX 100859
SVSLIX
Severe Weather Statement
National Weather Service New Orleans LA
359 AM CDT Mon May 10 2021
LAC075-087-100909-
/O.CAN.KLIX.TO.W.0020.000000T0000Z-210510T0915Z/
St. Bernard LA-Plaquemines LA-
359 AM CDT Mon May 10 2021
...THE TORNADO WARNING FOR WEST CENTRAL ST. BERNARD AND NORTHERN
PLAQUEMINES PARISHES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.
LAT...LON 2981 8994 2987 8992 2987 8991 2988 8991
2994 8989 2995 8984 2993 8981 2993 8975
2987 8970 2987 8960 2975 8961 2976 8963
2974 8965
TIME...MOT...LOC 0858Z 289DEG 22KT 2986 8982
$$The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 8:48 PM CDT | Flash Flood Watch | LIX | Assumption, East Baton Rouge, East Feliciana, Iberville, Orleans, Pointe Coupee and 9 more | 15 hr |
| May 10, 1:00 AM CDT | Special Weather Statement | LIX | Ascension, Livingston | 60 min |
| May 10, 1:29 AM CDT | Areal Flood Advisory | LIX | Ascension, Assumption, Iberville, Saint James | 70 min |
| May 10, 1:49 AM CDT | Special Weather Statement | LIX | Assumption, Saint James, Saint John the Baptist | 56 min |
| May 10, 1:54 AM CDT | Severe Thunderstorm Warning | LIX | Ascension, Assumption, Saint James | 51 min |
| May 10, 2:01 AM CDT | Special Marine Warning | LIX | 59 min | |
| May 10, 2:43 AM CDT | Areal Flood Advisory | LIX | Jefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles | 2 hr |
| May 10, 2:52 AM CDT | Special Marine Warning | LIX | 53 min | |
| May 10, 2:57 AM CDT | Flash Flood Warning | LIX | Jefferson, Orleans, Saint Charles | 9 hr |
| May 10, 3:25 AM CDT | Special Weather Statement | LIX | Orleans | 35 min |
| May 10, 3:37 AM CDT | Special Marine Warning | LIX | 113 min | |
| May 10, 4:20 AM CDT | Flash Flood Warning | LIX | Jefferson, Orleans, Plaquemines, Saint Bernard | 115 min |
| May 10, 5:26 AM CDT | Special Marine Warning | LIX | 64 min | |
| May 10, 5:29 AM CDT | Special Marine Warning | LIX | 2 hr | |
| May 10, 5:38 AM CDT | Special Weather Statement | LIX | West Baton Rouge | 67 min |
| May 10, 6:04 AM CDT | Special Weather Statement | LIX | East Baton Rouge, West Baton Rouge | 56 min |
| May 10, 6:16 AM CDT | Special Weather Statement | LIX | Saint Charles | 44 min |
| May 10, 6:36 AM CDT | Special Marine Warning | LIX | 54 min | |
| May 10, 7:25 AM CDT | Special Weather Statement | LIX | Saint John the Baptist | 50 min |
| May 10, 7:34 AM CDT | Special Marine Warning | LIX | 56 min | |
| May 10, 7:51 AM CDT | Severe Thunderstorm Warning | LIX | Iberville, Pointe Coupee, West Baton Rouge | 54 min |
| May 10, 8:23 AM CDT | Special Marine Warning | LIX | 67 min | |
| May 10, 8:28 AM CDT | Severe Thunderstorm Warning | LIX | Ascension, East Baton Rouge, Iberville, Livingston, Pointe Coupee, West Baton Rouge | 62 min |
| May 10, 9:16 AM CDT | Severe Thunderstorm Warning | LIX | Ascension, Assumption, East Baton Rouge, Iberville, Livingston, Saint James and 2 more | 44 min |
| May 10, 9:38 AM CDT | Tornado Warning | LIX | Ascension, Livingston, Saint James, Saint John the Baptist | 20 min |
| May 10, 9:57 AM CDT | Special Weather Statement | LIX | Assumption, Orleans, Saint Charles, Saint James, Saint John the Baptist, Saint Tammany | 63 min |
| May 10, 10:29 AM CDT | Special Marine Warning | LIX | 61 min | |
| May 10, 11:08 AM CDT | Special Weather Statement | LIX | Orleans | 52 min |
| May 10, 11:17 AM CDT | Special Marine Warning | LIX | 58 min | |
| May 10, 12:10 PM CDT | Special Marine Warning | LIX | 65 min | |
| May 10, 12:14 PM CDT | Special Marine Warning | LIX | 91 min | |
| May 10, 1:08 PM CDT | Special Marine Warning | LIX | 67 min | |
| May 10, 1:44 PM CDT | Special Marine Warning | LIX | 28 min | |
| May 10, 2:09 PM CDT | Special Marine Warning | LIX | 66 min | |
| May 10, 3:09 PM CDT | Special Marine Warning | LIX | 96 min |
Nearby
Tornado Warnings in Louisiana, 2021Every tornado warning in 2021Tornadoes 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.