Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 13, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Mar 23, 2021, 11:39 AM CDT for Saint Tammany Parish, Washington Parish, Louisiana; Hancock County, Pearl River County, Mississippi. It was in force for 51 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
- Mar 23, 2021, 11:39 AM CDT (16:39 UTC)
- Expired
- Mar 23, 2021, 12:30 PM CDT
- In force
- 51 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Saint Tammany Parish, LA, Washington Parish, LA, Hancock County, MS, Pearl River County, MS
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 4.7 hours before the alert went out and 40 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
- 13 J/kg
- Mixed-layer CIN
- -246 J/kg
- Mixed-layer LCL
- 759 m above ground
- 0-6 km bulk shear
- 0 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
888 WUUS54 KLIX 231639 SVRLIX LAC103-117-MSC045-109-231730- /O.NEW.KLIX.SV.W.0013.210323T1639Z-210323T1730Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service New Orleans LA 1139 AM CDT Tue Mar 23 2021 The National Weather Service in New Orleans has issued a * Severe Thunderstorm Warning for... Northeastern St. Tammany Parish in southeastern Louisiana... Southeastern Washington Parish in southeastern Louisiana... West central Hancock County in southern Mississippi... Southwestern Pearl River County in southern Mississippi... * Until 1230 PM CDT. * At 1139 AM CDT, a severe thunderstorm was located over Sun, or 10 miles southwest of Bogalusa, moving east at 35 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Picayune, Sun and Bush. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3058 9005 3075 8998 3063 8955 3038 8966 TIME...MOT...LOC 1639Z 290DEG 29KT 3064 8994 TORNADO...POSSIBLE HAIL...<.75IN WIND...60MPH $$ MSW
2 follow-up statements
063
WWUS54 KLIX 231653
SVSLIX
Severe Weather Statement
National Weather Service New Orleans LA
1153 AM CDT Tue Mar 23 2021
LAC103-117-MSC045-109-231730-
/O.CON.KLIX.SV.W.0013.000000T0000Z-210323T1730Z/
St. Tammany LA-Washington LA-Hancock MS-Pearl River MS-
1153 AM CDT Tue Mar 23 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 PM CDT
FOR NORTHEASTERN ST. TAMMANY AND SOUTHEASTERN WASHINGTON PARISHES...
WEST CENTRAL HANCOCK AND SOUTHWESTERN PEARL RIVER COUNTIES...
At 1152 AM CDT, a severe thunderstorm was located near Bush, or 9
miles northwest of Picayune, moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Picayune, Sun and Bush.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Thunderstorm lines can produce brief tornadoes and concentrated
wind damage. Although a tornado is not immediately likely, it is
best to move to an interior room on the lowest floor of a building.
This storm may cause serious injury and significant property damage.
&&
LAT...LON 3052 8994 3062 8994 3069 8992 3071 8983
3063 8955 3038 8966
TIME...MOT...LOC 1652Z 290DEG 29KT 3060 8982
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
Klein036
WWUS54 KLIX 231712
SVSLIX
Severe Weather Statement
National Weather Service New Orleans LA
1212 PM CDT Tue Mar 23 2021
LAC103-117-231721-
/O.CAN.KLIX.SV.W.0013.000000T0000Z-210323T1730Z/
St. Tammany LA-Washington LA-
1212 PM CDT Tue Mar 23 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ST. TAMMANY AND
SOUTHEASTERN WASHINGTON PARISHES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warning area. Therefore, the warning has been cancelled.
LAT...LON 3063 8955 3051 8960 3044 8963 3047 8970
3050 8974 3061 8968 3063 8957
TIME...MOT...LOC 1711Z 290DEG 29KT 3055 8965
$$
MSC045-109-231730-
/O.CON.KLIX.SV.W.0013.000000T0000Z-210323T1730Z/
Hancock MS-Pearl River MS-
1212 PM CDT Tue Mar 23 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 PM CDT
FOR NORTHWESTERN HANCOCK AND SOUTH CENTRAL PEARL RIVER COUNTIES...
At 1211 PM CDT, a severe thunderstorm was located over Picayune,
moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Picayune.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3063 8955 3051 8960 3044 8963 3047 8970
3050 8974 3061 8968 3063 8957
TIME...MOT...LOC 1711Z 290DEG 29KT 3055 8965
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
KleinThe office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 23, 3:57 AM CDT | Wind Advisory | LIX | Saint Bernard, Saint John the Baptist | 11 hr |
| Mar 23, 6:24 AM CDT | Special Weather Statement | LIX | Pointe Coupee, West Feliciana | 66 min |
| Mar 23, 6:40 AM CDT | Severe Thunderstorm Warning | LIX | Pointe Coupee, West Feliciana | 35 min |
| Mar 23, 7:09 AM CDT | Severe Thunderstorm Warning | LIX | East Feliciana, Pointe Coupee, West Feliciana | 51 min |
| Mar 23, 7:47 AM CDT | Severe Thunderstorm Warning | LIX | East Feliciana, West Feliciana | 43 min |
| Mar 23, 8:00 AM CDT | Special Weather Statement | LIX | Pointe Coupee | 30 min |
| Mar 23, 8:33 AM CDT | Special Weather Statement | LIX | West Feliciana | 27 min |
| Mar 23, 9:00 AM CDT | Special Weather Statement | LIX | East Feliciana | 30 min |
| Mar 23, 9:11 AM CDT | Special Weather Statement | LIX | Pointe Coupee | 34 min |
| Mar 23, 9:29 AM CDT | Special Weather Statement | LIX | Saint Helena | 31 min |
| Mar 23, 9:42 AM CDT | Severe Thunderstorm Warning | LIX | East Baton Rouge, Iberville, Livingston, Pointe Coupee, West Baton Rouge | 34 min |
| Mar 23, 10:41 AM CDT | River Flood Warning | LIX | Saint Tammany | 65 days |
| Mar 23, 10:41 AM CDT | River Flood Warning | LIX | Saint Tammany | 7 days |
| Mar 23, 10:51 AM CDT | River Flood Warning | LIX | Saint Helena | 62 hr |
| Mar 23, 10:54 AM CDT | River Flood Warning | LIX | Tangipahoa | 6 days |
| Mar 23, 10:57 AM CDT | River Flood Warning | LIX | Saint Tammany | 4 days |
| Mar 23, 11:01 AM CDT | River Flood Warning | LIX | Saint Tammany | 4 days |
| Mar 23, 11:22 AM CDT | Special Weather Statement | LIX | Assumption | 23 min |
| Mar 23, 11:25 AM CDT | Special Weather Statement | LIX | Saint Tammany | 35 min |
| Mar 23, 11:46 AM CDT | River Flood Warning | LIX | East Baton Rouge, West Baton Rouge | 35 days |
| Mar 23, 11:49 AM CDT | Severe Thunderstorm Warning | LIX | Saint Tammany | 41 min |
| Mar 23, 12:06 PM CDT | Special Marine Warning | LIX | 54 min | |
| Mar 23, 12:47 PM CDT | Areal Flood Advisory | LIX | Jefferson, Orleans, Saint Bernard | 3 hr |
| Mar 23, 12:55 PM CDT | Areal Flood Advisory | LIX | Saint Tammany | 3 hr |
| Mar 23, 1:08 PM CDT | Flash Flood Warning | LIX | Jefferson, Orleans | 2 hr |
| Mar 23, 1:18 PM CDT | Flash Flood Warning | LIX | Saint Bernard | 2 hr |
| Mar 23, 1:20 PM CDT | Special Marine Warning | LIX | 85 min | |
| Mar 23, 1:48 PM CDT | Areal Flood Advisory | LIX | Jefferson, Saint Charles | 3 hr |
| Mar 23, 2:38 PM CDT | Special Marine Warning | LIX | 97 min | |
| Mar 23, 3:25 PM CDT | Areal Flood Advisory | LIX | Lafourche | 3 hr |
| Mar 23, 3:27 PM CDT | Areal Flood Advisory | LIX | Lafourche, Terrebonne | 3 hr |
| Mar 23, 3:38 PM CDT | Areal Flood Advisory | LIX | Lafourche, Terrebonne | 3 hr |
| Mar 23, 4:05 PM CDT | Flash Flood Warning | LIX | Lafourche, Terrebonne | 9 hr |
| Mar 23, 4:09 PM CDT | Areal Flood Advisory | LIX | Jefferson, Orleans, Saint Bernard | 3 hr |
| Mar 23, 8:30 AM CDT | Special Weather Statement | LIX | Amite | 30 min |
| Mar 23, 9:57 AM CDT | Special Weather Statement | LIX | Pike | 33 min |
| Mar 23, 10:13 AM CDT | River Flood Warning | LIX | Harrison | 70 hr |
| Mar 23, 10:13 AM CDT | River Flood Warning | LIX | Harrison | 4 days |
| Mar 23, 10:31 AM CDT | Special Weather Statement | LIX | Walthall | 29 min |
| Mar 23, 10:41 AM CDT | River Flood Warning | LIX | Pearl River | 4 days |
| Mar 23, 10:41 AM CDT | River Flood Warning | LIX | Pike, Walthall | 62 hr |
| Mar 23, 11:39 AM CDT | River Flood Warning | LIX | Jackson | 21 days |
| Mar 23, 12:11 PM CDT | Severe Thunderstorm Warning | LIX | Hancock, Harrison, Pearl River | 38 min |
| Mar 23, 12:20 PM CDT | Special Weather Statement | LIX | Hancock | 25 min |
| Mar 23, 12:41 PM CDT | Special Weather Statement | LIX | Harrison | 34 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2021Severe Thunderstorm Warnings in Mississippi, 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.