Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 43, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Apr 10, 2021, 3:20 AM CDT for 5 parishes in Louisiana; Amite County, Wilkinson County, Mississippi. It was in force for 33 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 10, 2021, 3:20 AM CDT (08:20 UTC)
- Expired
- Apr 10, 2021, 3:53 AM CDT
- In force
- 33 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties East Baton Rouge Parish, LA, East Feliciana Parish, LA, Pointe Coupee Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Amite County, MS, Wilkinson County, MS
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 10, 3:40 AM CDT | TSTM WND DMG | 2 Ne Jackson, LA | TREES DOWN NEAR HWY 68 AND MILLER RD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 9, 10:25 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 10, 12:16 AM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 8.3 hours before the alert went out and 179 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
- 2977 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 599 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 243 m²/s²
- 0-3 km storm-relative helicity
- 269 m²/s²
- Significant tornado parameter
- 3.4
- Supercell composite
- 18.1
The text
As transmitted.
715
WUUS54 KLIX 100820
SVRLIX
LAC033-037-077-121-125-MSC005-157-100915-
/O.NEW.KLIX.SV.W.0043.210410T0820Z-210410T0915Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New Orleans LA
320 AM CDT Sat Apr 10 2021
The National Weather Service in New Orleans has issued a
* Severe Thunderstorm Warning for...
Northwestern West Baton Rouge Parish in southeastern Louisiana...
West Feliciana Parish in southeastern Louisiana...
Pointe Coupee Parish in southeastern Louisiana...
East Feliciana Parish in southeastern Louisiana...
Northwestern East Baton Rouge Parish in southeastern Louisiana...
Southeastern Wilkinson County in southern Mississippi...
Southwestern Amite County in southern Mississippi...
* Until 415 AM CDT.
* At 320 AM CDT, severe thunderstorms were located along a line
extending from 7 miles southwest of Woodville to near Melville,
moving northeast at 40 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Zachary, New Roads, Jackson, St. Francisville, Clinton,
Centreville, Livonia, Slaughter, Fordoche, Morganza, Wilson,
Norwood, Wakefield, Spillman, Batchelor, Erwinville, Felps and
Lottie.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 700 AM CDT for southeastern
Louisiana...and southern Mississippi.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3109 9143 3109 9088 3101 9088 3050 9127
3050 9175 3051 9173 3056 9176 3071 9173
3076 9176
TIME...MOT...LOC 0820Z 234DEG 36KT 3102 9137 3070 9169
TORNADO...POSSIBLE
HAIL...0.88IN
WIND...60MPH
$$
KLG2 follow-up statements
727
WWUS54 KLIX 100840
SVSLIX
Severe Weather Statement
National Weather Service New Orleans LA
340 AM CDT Sat Apr 10 2021
MSC005-157-100850-
/O.CAN.KLIX.SV.W.0043.000000T0000Z-210410T0915Z/
Wilkinson MS-Amite MS-
340 AM CDT Sat Apr 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WILKINSON AND
SOUTHWESTERN AMITE COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 700 AM CDT for southeastern
Louisiana...and southern Mississippi.
LAT...LON 3100 9122 3100 9089 3050 9127 3050 9175
3051 9173 3056 9175
TIME...MOT...LOC 0840Z 234DEG 36KT 3113 9119 3081 9151
$$
LAC033-037-077-121-125-100915-
/O.CON.KLIX.SV.W.0043.000000T0000Z-210410T0915Z/
West Baton Rouge LA-West Feliciana LA-Pointe Coupee LA-
East Feliciana LA-East Baton Rouge LA-
340 AM CDT Sat Apr 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 AM CDT
FOR NORTHWESTERN WEST BATON ROUGE...SOUTHEASTERN WEST FELICIANA...
SOUTHERN POINTE COUPEE...EAST FELICIANA AND NORTHWESTERN EAST BATON
ROUGE PARISHES...
At 340 AM CDT, severe thunderstorms were located along a line
extending from 6 miles east of Woodville to 7 miles northeast of
Morganza, moving northeast at 40 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Zachary, New Roads, Jackson, St. Francisville, Clinton, Livonia,
Slaughter, Fordoche, Wilson, Norwood, Wakefield, Spillman,
Erwinville, Felps and Lottie.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 700 AM CDT for southeastern
Louisiana...and southern Mississippi.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3100 9122 3100 9089 3050 9127 3050 9175
3051 9173 3056 9175
TIME...MOT...LOC 0840Z 234DEG 36KT 3113 9119 3081 9151
TORNADO...POSSIBLE
HAIL...0.88IN
WIND...60MPH
$$
KLG489
WWUS54 KLIX 100853
SVSLIX
Severe Weather Statement
National Weather Service New Orleans LA
353 AM CDT Sat Apr 10 2021
LAC033-037-077-121-125-100903-
/O.CAN.KLIX.SV.W.0043.000000T0000Z-210410T0915Z/
West Baton Rouge LA-West Feliciana LA-Pointe Coupee LA-
East Feliciana LA-East Baton Rouge LA-
353 AM CDT Sat Apr 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WEST BATON
ROUGE...SOUTHEASTERN WEST FELICIANA...SOUTHERN POINTE COUPEE...EAST
FELICIANA AND NORTHWESTERN EAST BATON ROUGE PARISHES IS CANCELLED...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled. However gusty winds are
still possible with these thunderstorms.
A Tornado Watch remains in effect until 700 AM CDT for southeastern
Louisiana...and southern Mississippi.
LAT...LON 3100 9122 3100 9089 3050 9127 3050 9175
3051 9173 3056 9175
TIME...MOT...LOC 0853Z 234DEG 36KT 3121 9106 3089 9138
$$
KLGThe office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 10, 12:41 AM CDT | Severe Thunderstorm Warning | LIX | Saint Tammany, Washington | 11 min |
| Apr 10, 1:07 AM CDT | Special Marine Warning | LIX | 22 min | |
| Apr 10, 1:40 AM CDT | Special Marine Warning | LIX | 20 min | |
| Apr 10, 1:45 AM CDT | Tornado Warning | LIX | Pointe Coupee, West Feliciana | 45 min |
| Apr 10, 1:52 AM CDT | Special Weather Statement | LIX | Saint Tammany | 38 min |
| Apr 10, 2:01 AM CDT | Severe Thunderstorm Warning | LIX | Saint Tammany, Washington | 29 min |
| Apr 10, 2:05 AM CDT | Tornado Warning | LIX | Saint Tammany | 10 min |
| Apr 10, 2:28 AM CDT | Severe Thunderstorm Warning | LIX | Pointe Coupee, West Feliciana | 47 min |
| Apr 10, 2:48 AM CDT | Severe Thunderstorm Warning | LIX | East Baton Rouge, East Feliciana, Saint Helena, West Feliciana | 39 min |
| Apr 10, 2:58 AM CDT | Severe Thunderstorm Warning | LIX | Saint Helena, Tangipahoa | 35 min |
| Apr 10, 3:25 AM CDT | Special Weather Statement | LIX | Saint Helena, Tangipahoa | 65 min |
| Apr 10, 3:26 AM CDT | Special Weather Statement | LIX | Ascension, Assumption, Livingston, Saint James, Saint John the Baptist | 64 min |
| Apr 10, 3:38 AM CDT | Special Marine Warning | LIX | 67 min | |
| Apr 10, 3:59 AM CDT | Special Weather Statement | LIX | East Baton Rouge | 46 min |
| Apr 10, 4:16 AM CDT | Special Marine Warning | LIX | 59 min | |
| Apr 10, 4:23 AM CDT | Tornado Warning | LIX | Saint James, Saint John the Baptist | 19 min |
| Apr 10, 4:40 AM CDT | Flash Flood Warning | LIX | Saint Tammany, Tangipahoa, Washington | 3 hr |
| Apr 10, 4:47 AM CDT | Special Weather Statement | LIX | Ascension, Assumption, Orleans, Saint Charles, Saint James, Saint John the Baptist and 1 more | 58 min |
| Apr 10, 4:58 AM CDT | Severe Thunderstorm Warning | LIX | Jefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles, Saint Tammany | 47 min |
| Apr 10, 5:16 AM CDT | Flash Flood Warning | LIX | Orleans | 3 hr |
| Apr 10, 5:23 AM CDT | Special Marine Warning | LIX | 67 min | |
| Apr 10, 5:24 AM CDT | Flash Flood Warning | LIX | Saint Bernard | 3 hr |
| Apr 10, 5:46 AM CDT | Special Weather Statement | LIX | Assumption, Jefferson, Orleans, Saint Charles | 59 min |
| Apr 10, 6:07 AM CDT | Areal Flood Advisory | LIX | Jefferson, Lafourche, Orleans, Saint Charles, Saint John the Baptist, Terrebonne | 2 hr |
| Apr 10, 6:24 AM CDT | Special Marine Warning | LIX | 96 min | |
| Apr 10, 6:29 AM CDT | Flash Flood Warning | LIX | Lafourche, Terrebonne | 89 min |
| Apr 10, 6:33 AM CDT | Flash Flood Warning | LIX | Jefferson, Plaquemines | 105 min |
| Apr 10, 6:42 AM CDT | Special Weather Statement | LIX | Jefferson, Lafourche, Plaquemines, Terrebonne | 78 min |
| Apr 10, 7:13 AM CDT | Special Marine Warning | LIX | 92 min | |
| Apr 10, 7:53 AM CDT | Special Marine Warning | LIX | 97 min | |
| Apr 10, 8:52 AM CDT | River Flood Warning | LIX | Saint Tammany | 10 days |
| Apr 10, 8:52 AM CDT | River Flood Warning | LIX | Saint Tammany | 24 hr |
| Apr 10, 8:55 AM CDT | River Flood Warning | LIX | Saint Tammany | 25 hr |
| Apr 10, 9:49 AM CDT | River Flood Warning | LIX | Washington | 33 hr |
| Apr 10, 11:15 AM CDT | Special Weather Statement | LIX | Terrebonne | 30 min |
| Apr 10, 11:51 AM CDT | Special Weather Statement | LIX | Lafourche | 39 min |
| Apr 10, 12:28 PM CDT | Special Weather Statement | LIX | Jefferson | 32 min |
| Apr 10, 5:46 PM CDT | River Flood Warning | LIX | Saint Helena | 26 hr |
| Apr 9, 11:57 PM CDT | Severe Thunderstorm Warning | LIX | Amite, Pike | 36 min |
| Apr 10, 12:12 AM CDT | Severe Thunderstorm Warning | LIX | Walthall | 33 min |
| Apr 10, 12:14 AM CDT | Special Weather Statement | LIX | Wilkinson | 46 min |
| Apr 10, 12:46 AM CDT | Severe Thunderstorm Warning | LIX | Amite, Pike, Walthall | 43 min |
| Apr 10, 1:33 AM CDT | Special Weather Statement | LIX | Pearl River | 42 min |
| Apr 10, 2:42 AM CDT | Severe Thunderstorm Warning | LIX | Hancock, Harrison | 33 min |
| Apr 10, 3:11 AM CDT | Severe Thunderstorm Warning | LIX | Harrison, Jackson | 49 min |
| Apr 10, 3:29 AM CDT | Severe Thunderstorm Warning | LIX | Harrison, Jackson | 31 min |
| Apr 10, 3:36 AM CDT | Special Weather Statement | LIX | Pearl River | 39 min |
| Apr 10, 3:55 AM CDT | Severe Thunderstorm Warning | LIX | Harrison, Jackson | 14 min |
| Apr 10, 4:06 AM CDT | Flash Flood Warning | LIX | Hancock, Pearl River | 3 hr |
| Apr 10, 5:07 AM CDT | Special Weather Statement | LIX | Hancock | 23 min |
| Apr 10, 5:35 AM CDT | Special Weather Statement | LIX | Harrison | 25 min |
| Apr 10, 6:02 AM CDT | Areal Flood Advisory | LIX | Jackson | 3 hr |
| Apr 10, 9:49 AM CDT | River Flood Warning | LIX | Pike, Walthall | 56 hr |
| Apr 10, 9:58 AM CDT | River Flood Warning | LIX | Harrison | 25 hr |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.