Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 14, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Mar 23, 2021, 11:49 AM CDT for Saint Tammany Parish, Louisiana; Hancock County, Mississippi. It was in force for 41 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, 11:49 AM CDT (16:49 UTC)
- Expired
- Mar 23, 2021, 12:30 PM CDT
- In force
- 41 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, Hancock County, MS
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 4.8 hours before the alert went out and 20 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.
211 WUUS54 KLIX 231649 SVRLIX LAC103-MSC045-231730- /O.NEW.KLIX.SV.W.0014.210323T1649Z-210323T1730Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service New Orleans LA 1149 AM CDT Tue Mar 23 2021 The National Weather Service in New Orleans has issued a * Severe Thunderstorm Warning for... Southeastern St. Tammany Parish in southeastern Louisiana... West central Hancock County in southern Mississippi... * Until 1230 PM CDT. * At 1147 AM CDT, a severe thunderstorm was located near Lacombe, or 12 miles northwest of Slidell, moving east at 40 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Slidell, Pearl River, Lacombe, Stennis Space Center and Slidell Airport. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3035 9004 3052 8996 3042 8955 3019 8969 TIME...MOT...LOC 1647Z 291DEG 34KT 3041 8992 TORNADO...POSSIBLE HAIL...<.75IN WIND...60MPH $$ MSW
2 follow-up statements
248
WWUS54 KLIX 231715
SVSLIX
Severe Weather Statement
National Weather Service New Orleans LA
1215 PM CDT Tue Mar 23 2021
LAC103-MSC045-231730-
/O.CON.KLIX.SV.W.0014.000000T0000Z-210323T1730Z/
St. Tammany LA-Hancock MS-
1215 PM CDT Tue Mar 23 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 PM CDT
FOR SOUTHEASTERN ST. TAMMANY PARISH IN SOUTHEASTERN LOUISIANA AND
WEST CENTRAL HANCOCK COUNTIES...
At 1214 PM CDT, a severe thunderstorm was located near Pearl River,
or near Slidell, moving east at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Slidell, Pearl River, Stennis Space Center, Lacombe and Slidell
Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
poor drainage flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3040 8984 3041 8978 3039 8957 3019 8969
3021 8974 3029 8991
TIME...MOT...LOC 1714Z 284DEG 34KT 3032 8970
HAIL...<.75IN
WIND...60MPH
$$
Klein950
WWUS54 KLIX 231726
SVSLIX
Severe Weather Statement
National Weather Service New Orleans LA
1226 PM CDT Tue Mar 23 2021
LAC103-MSC045-231735-
/O.EXP.KLIX.SV.W.0014.000000T0000Z-210323T1730Z/
St. Tammany LA-Hancock MS-
1226 PM CDT Tue Mar 23 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ST. TAMMANY
PARISH IN SOUTHEASTERN LOUISIANA AND WEST CENTRAL HANCOCK COUNTIES
WILL EXPIRE AT 1230 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.
LAT...LON 3040 8984 3041 8978 3039 8957 3019 8969
3021 8974 3029 8991
TIME...MOT...LOC 1725Z 291DEG 34KT 3029 8960
$$
MSWThe 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, 11:39 AM CDT | Severe Thunderstorm Warning | LIX | Saint Tammany, Washington | 51 min |
| Mar 23, 11:46 AM CDT | River Flood Warning | LIX | East Baton Rouge, West Baton Rouge | 35 days |
| 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.