Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 150, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Dec 6, 2021, 1:44 PM CST for Livingston Parish, Saint Helena Parish, Louisiana. It was in force for 61 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
- Dec 6, 2021, 1:44 PM CST (19:44 UTC)
- Expired
- Dec 6, 2021, 2:45 PM CST
- In force
- 61 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Livingston Parish, LA, Saint Helena Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 7.7 hours before the alert went out and 113 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
- 720 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 680 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 180 m²/s²
- 0-3 km storm-relative helicity
- 201 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 5.4
The text
As transmitted.
016
WUUS54 KLIX 061944
SVRLIX
LAC063-091-062045-
/O.NEW.KLIX.SV.W.0150.211206T1944Z-211206T2045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New Orleans LA
144 PM CST Mon Dec 6 2021
The National Weather Service in New Orleans has issued a
* Severe Thunderstorm Warning for...
Southern St. Helena Parish in southeastern Louisiana...
Northeastern Livingston Parish in southeastern Louisiana...
* Until 245 PM CST.
* At 143 PM CST, a severe thunderstorm was located 7 miles east of
Pride, or 15 miles southwest of Greensburg, moving east at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Montpelier.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3054 9057 3063 9093 3067 9089 3070 9085
3072 9084 3074 9085 3076 9084 3076 9057
TIME...MOT...LOC 1943Z 278DEG 20KT 3068 9086
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
CAB1 follow-up statement
373
WWUS54 KLIX 062009
SVSLIX
Severe Weather Statement
National Weather Service New Orleans LA
209 PM CST Mon Dec 6 2021
LAC063-091-062045-
/O.CON.KLIX.SV.W.0150.000000T0000Z-211206T2045Z/
St. Helena LA-Livingston LA-
209 PM CST Mon Dec 6 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM CST
FOR SOUTHEASTERN ST. HELENA AND NORTHEASTERN LIVINGSTON PARISHES...
At 209 PM CST, a severe thunderstorm was located over Montpelier, or
11 miles south of Greensburg, moving east at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Montpelier.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3054 9057 3059 9076 3069 9071 3076 9057
TIME...MOT...LOC 2009Z 278DEG 20KT 3066 9069
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
CABThe office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 6, 11:08 AM CST | Special Weather Statement | LIX | East Feliciana | 67 min |
| Dec 6, 12:01 PM CST | Special Weather Statement | LIX | Saint Helena | 74 min |
| Dec 6, 12:21 PM CST | Severe Thunderstorm Warning | LIX | East Feliciana, Saint Helena | 54 min |
| Dec 6, 12:46 PM CST | Severe Thunderstorm Warning | LIX | Tangipahoa, Washington | 59 min |
| Dec 6, 1:22 PM CST | Tornado Warning | LIX | Tangipahoa, Washington | 68 min |
| Dec 6, 1:29 PM CST | Severe Thunderstorm Warning | LIX | Saint Helena, Tangipahoa, Washington | 61 min |
| Dec 6, 1:40 PM CST | Special Weather Statement | LIX | Saint Helena | 65 min |
| Dec 6, 1:54 PM CST | Severe Thunderstorm Warning | LIX | Saint Helena, Tangipahoa | 66 min |
| Dec 6, 2:21 PM CST | Severe Thunderstorm Warning | LIX | Saint Tammany, Washington | 39 min |
| Dec 6, 2:24 PM CST | Tornado Warning | LIX | Washington | 21 min |
| Dec 6, 2:30 PM CST | Severe Thunderstorm Warning | LIX | Livingston, Saint Tammany, Tangipahoa | 60 min |
| Dec 6, 2:35 PM CST | Tornado Warning | LIX | Saint Tammany, Washington | 55 min |
| Dec 6, 2:41 PM CST | Special Marine Warning | LIX | 64 min | |
| Dec 6, 2:51 PM CST | Flash Flood Warning | LIX | Ascension, East Baton Rouge, West Baton Rouge | 116 min |
| Dec 6, 2:51 PM CST | Tornado Warning | LIX | Saint Tammany | 39 min |
| Dec 6, 2:56 PM CST | Tornado Warning | LIX | Saint Tammany | 49 min |
| Dec 6, 3:09 PM CST | Severe Thunderstorm Warning | LIX | Saint Tammany | 66 min |
| Dec 6, 3:20 PM CST | Tornado Warning | LIX | Saint Tammany | 30 min |
| Dec 6, 3:26 PM CST | Special Marine Warning | LIX | 64 min | |
| Dec 6, 4:14 PM CST | Special Marine Warning | LIX | 91 min | |
| Dec 6, 5:24 PM CST | Special Marine Warning | LIX | 66 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2021Every severe thunderstorm 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.