Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 124, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Jun 15, 2021, 5:27 PM CDT for Assumption Parish, Lafourche Parish, Terrebonne Parish, Louisiana. It was in force for 48 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
- Jun 15, 2021, 5:27 PM CDT (22:27 UTC)
- Expired
- Jun 15, 2021, 6:15 PM CDT
- In force
- 48 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Assumption Parish, LA, Lafourche Parish, LA, Terrebonne Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 10.5 hours before the alert went out and 144 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
- 2060 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 970 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
656
WUUS54 KLIX 152227
SVRLIX
LAC007-057-109-152315-
/O.NEW.KLIX.SV.W.0124.210615T2227Z-210615T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New Orleans LA
527 PM CDT Tue Jun 15 2021
The National Weather Service in New Orleans has issued a
* Severe Thunderstorm Warning for...
Northwestern Terrebonne Parish in southeastern Louisiana...
Northwestern Lafourche Parish in southeastern Louisiana...
Assumption Parish in southeastern Louisiana...
* Until 615 PM CDT.
* At 527 PM CDT, severe thunderstorms were located along a line
extending from Napoleonville to near Labadieville, moving south at
20 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...
Napoleonville, Supreme, Labadieville, Paincourtville, Schriever and
Belle Rose.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Large hail and damaging winds and continuous cloud to ground
lightning is occurring with these storms. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.
&&
LAT...LON 2997 9120 3001 9107 2995 9094 2988 9087
2961 9081 2948 9087 2945 9098 2955 9117
2961 9118 2959 9116 2963 9108 2965 9111
2974 9111 2976 9109 2982 9111 2986 9120
2991 9122
TIME...MOT...LOC 2227Z 001DEG 16KT 2993 9103 2977 9098
HAIL...1.00IN
WIND...60MPH
$$
JRK2 follow-up statements
826
WWUS54 KLIX 152254
SVSLIX
Severe Weather Statement
National Weather Service New Orleans LA
554 PM CDT Tue Jun 15 2021
LAC007-057-109-152315-
/O.CON.KLIX.SV.W.0124.000000T0000Z-210615T2315Z/
Terrebonne LA-Lafourche LA-Assumption LA-
554 PM CDT Tue Jun 15 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR NORTHWESTERN TERREBONNE...WESTERN LAFOURCHE AND SOUTHEASTERN
ASSUMPTION PARISHES...
At 553 PM CDT, a se0rm was located near Amelia, or 7 miles southeast
of Stephensville, moving south at 20 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Labadieville, Supreme and Schriever.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
&&
LAT...LON 2984 9115 2989 9108 2979 9087 2970 9083
2961 9081 2948 9087 2945 9098 2955 9117
2961 9118 2959 9116 2963 9108 2965 9111
2974 9111 2976 9109 2982 9111
TIME...MOT...LOC 2253Z 006DEG 16KT 2973 9105
HAIL...0.88IN
WIND...60MPH
$$
JRK467
WWUS54 KLIX 152317
SVSLIX
Severe Weather Statement
National Weather Service New Orleans LA
617 PM CDT Tue Jun 15 2021
LAC007-057-109-152326-
/O.EXP.KLIX.SV.W.0124.000000T0000Z-210615T2315Z/
Terrebonne LA-Lafourche LA-Assumption LA-
617 PM CDT Tue Jun 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN TERREBONNE...
WESTERN LAFOURCHE AND SOUTHEASTERN ASSUMPTION PARISHES HAS EXPIRED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been allowed to expire. However small
hail, gusty winds, and heavy rain are still possible with this
thunderstorm.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
New Orleans.
LAT...LON 2984 9115 2989 9108 2979 9087 2970 9083
2961 9081 2948 9087 2945 9098 2955 9117
2961 9118 2959 9116 2963 9108 2965 9111
2974 9111 2976 9109 2982 9111
TIME...MOT...LOC 2316Z 001DEG 16KT 2963 9105
$$
JRKThe office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 15, 1:45 PM CDT | Special Weather Statement | LIX | Orleans | 30 min |
| Jun 15, 2:18 PM CDT | Special Weather Statement | LIX | Orleans | 27 min |
| Jun 15, 2:51 PM CDT | Special Marine Warning | LIX | 84 min | |
| Jun 15, 3:08 PM CDT | Special Weather Statement | LIX | West Baton Rouge | 37 min |
| Jun 15, 3:27 PM CDT | Special Weather Statement | LIX | Iberville | 33 min |
| Jun 15, 3:50 PM CDT | Severe Thunderstorm Warning | LIX | Ascension, Livingston, Saint James, Saint John the Baptist | 40 min |
| Jun 15, 4:18 PM CDT | Severe Thunderstorm Warning | LIX | Ascension, Assumption, Livingston, Saint James, Saint John the Baptist | 42 min |
| Jun 15, 4:39 PM CDT | Special Weather Statement | LIX | Iberville | 51 min |
| Jun 15, 4:50 PM CDT | Severe Thunderstorm Warning | LIX | Ascension, Assumption, Saint James | 40 min |
| Jun 15, 6:16 PM CDT | Special Weather Statement | LIX | Terrebonne | 44 min |
| Jun 15, 6:39 PM CDT | Special Weather Statement | LIX | East Baton Rouge | 36 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.