Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 23, NWS New Orleans, LA

April 7, 2021Pointe Coupee Parish, West Feliciana Parish, Louisiana; Wilkinson County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Apr 7, 2021, 9:42 PM CDT for Pointe Coupee Parish, West Feliciana Parish, Louisiana; Wilkinson County, Mississippi. It was in force for 78 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
Apr 7, 2021, 9:42 PM CDT (02:42 UTC)
Expired
Apr 7, 2021, 11:00 PM CDT
In force
78 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Tornado
Possible
Hail
1.0 in
Wind
60.0 mph

Counties Pointe Coupee Parish, LA, West Feliciana Parish, LA, Wilkinson County, MS

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 2.7 hours before the alert went out and 188 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.

Skew-T log-pSkew-T log-p diagram, Lake Charles Mun, LA at 00:00Z on 2021-04-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1905 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 00:00Z on 2021-04-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 204 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1905 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
549 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
204 m²/s²
0-3 km storm-relative helicity
210 m²/s²
Significant tornado parameter
2.0
Supercell composite
12.6

Open this sounding in Storm Lab

The text

As transmitted.

918 
WUUS54 KLIX 080242
SVRLIX
LAC077-125-MSC157-080400-
/O.NEW.KLIX.SV.W.0023.210408T0242Z-210408T0400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New Orleans LA
942 PM CDT Wed Apr 7 2021

The National Weather Service in New Orleans has issued a

* Severe Thunderstorm Warning for...
  Northwestern West Feliciana Parish in southeastern Louisiana...
  Northwestern Pointe Coupee Parish in southeastern Louisiana...
  Southwestern Wilkinson County in southern Mississippi...

* Until 1100 PM CDT.

* At 942 PM CDT, a severe thunderstorm was located near Mansura, or
  near Moreauville, moving east at 35 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...
  Woodville, Wakefield and Fort Adams. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3104 9172 3104 9165 3097 9166 3100 9163
      3104 9156 3107 9157 3113 9163 3124 9156
      3122 9151 3124 9148 3126 9147 3127 9126
      3088 9134 3095 9180 3097 9181
TIME...MOT...LOC 0242Z 274DEG 32KT 3109 9201 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

CAB
3 follow-up statements
807 
WWUS54 KLIX 080259
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
959 PM CDT Wed Apr 7 2021

LAC077-125-MSC157-080400-
/O.CON.KLIX.SV.W.0023.000000T0000Z-210408T0400Z/
West Feliciana LA-Pointe Coupee LA-Wilkinson MS-
959 PM CDT Wed Apr 7 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
FOR NORTHWESTERN WEST FELICIANA...NORTHWESTERN POINTE COUPEE PARISHES
IN SOUTHEASTERN LOUISIANA AND SOUTHWESTERN WILKINSON COUNTIES...

At 958 PM CDT, a severe thunderstorm was located over Bordelonville,
moving east at 35 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...
Woodville, Wakefield and Fort Adams. 

This storm has shown increased rotation and a history of producing 
tornadoes. A tornado warning may be necessary soon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into a
small central room in a sturdy structure.

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 3104 9172 3104 9165 3097 9166 3100 9163
      3104 9156 3107 9157 3113 9163 3124 9156
      3122 9151 3124 9148 3126 9147 3127 9126
      3088 9134 3095 9180 3097 9181
TIME...MOT...LOC 0258Z 275DEG 29KT 3107 9190 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

CAB
494 
WWUS54 KLIX 080325
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
1025 PM CDT Wed Apr 7 2021

LAC077-125-MSC157-080400-
/O.CON.KLIX.SV.W.0023.000000T0000Z-210408T0400Z/
West Feliciana LA-Pointe Coupee LA-Wilkinson MS-
1025 PM CDT Wed Apr 7 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
FOR NORTHWESTERN WEST FELICIANA...NORTHWESTERN POINTE COUPEE PARISHES
IN SOUTHEASTERN LOUISIANA AND SOUTHWESTERN WILKINSON COUNTIES...

At 1025 PM CDT, a severe thunderstorm was located near Fort Adams, or
12 miles northeast of Simmesport, moving east at 35 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Woodville, Wakefield and Fort Adams. 

Areas outside of the tornado warning could still see severe winds 
and possibly small hail. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into a
small central room in a sturdy structure.

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 3104 9172 3104 9165 3097 9166 3100 9163
      3104 9156 3107 9157 3113 9163 3124 9156
      3122 9151 3124 9148 3126 9147 3127 9126
      3088 9134 3095 9180 3097 9181
TIME...MOT...LOC 0325Z 274DEG 32KT 3105 9162 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
 
$$

CAB
380 
WWUS54 KLIX 080348
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
1048 PM CDT Wed Apr 7 2021

LAC077-080357-
/O.CAN.KLIX.SV.W.0023.000000T0000Z-210408T0400Z/
Pointe Coupee LA-
1048 PM CDT Wed Apr 7 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN POINTE COUPEE
PARISH IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3127 9126 3088 9134 3093 9165 3099 9165
      3104 9156 3107 9157 3113 9163 3116 9160
      3119 9159 3124 9156 3122 9151 3124 9148
      3126 9147
TIME...MOT...LOC 0347Z 270DEG 31KT 3108 9141 

$$

LAC125-MSC157-080400-
/O.CON.KLIX.SV.W.0023.000000T0000Z-210408T0400Z/
West Feliciana LA-Wilkinson MS-
1048 PM CDT Wed Apr 7 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
FOR NORTHWESTERN WEST FELICIANA PARISH IN SOUTHEASTERN LOUISIANA AND
SOUTHWESTERN WILKINSON COUNTIES...

At 1047 PM CDT, a severe thunderstorm was located near Woodville, or
20 miles north of St. Francisville, moving east at 35 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Woodville, Wakefield and Fort Adams. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into a
small central room in a sturdy structure.

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 3127 9126 3088 9134 3093 9165 3099 9165
      3104 9156 3107 9157 3113 9163 3116 9160
      3119 9159 3124 9156 3122 9151 3124 9148
      3126 9147
TIME...MOT...LOC 0347Z 270DEG 31KT 3108 9141 

TORNADO...POSSIBLE
HAIL...1.25IN
WIND...60MPH
 
$$

CAB

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 7, 10:22 PM CDTTornado WarningLIXWest Feliciana53 min
Apr 7, 10:50 PM CDTSevere Thunderstorm WarningLIXEast Feliciana, West Feliciana70 min
Apr 8, 12:08 AM CDTSevere Thunderstorm WarningLIXEast Feliciana, Saint Helena67 min
Apr 8, 12:25 AM CDTSevere Thunderstorm WarningLIXEast Baton Rouge, East Feliciana, Pointe Coupee, Saint Helena, West Baton Rouge, West Feliciana34 min
Apr 8, 12:39 AM CDTSevere Thunderstorm WarningLIXSaint Helena, Tangipahoa, Washington66 min
Apr 8, 1:05 AM CDTSevere Thunderstorm WarningLIXSaint Tammany, Tangipahoa, Washington55 min
Apr 8, 1:12 AM CDTTornado WarningLIXTangipahoa, Washington33 min
Apr 8, 1:20 AM CDTTornado WarningLIXLivingston, Saint Helena25 min
Apr 8, 1:51 AM CDTSevere Thunderstorm WarningLIXLivingston, Saint John the Baptist, Tangipahoa39 min
Apr 8, 2:00 AM CDTSpecial Marine WarningLIX30 min
Apr 8, 2:04 AM CDTSpecial Weather StatementLIXSaint Tammany56 min
Apr 8, 2:14 AM CDTSpecial Marine WarningLIX61 min
Apr 8, 2:24 AM CDTSevere Thunderstorm WarningLIXSaint Tammany51 min
Apr 8, 2:30 AM CDTTornado WarningLIXSaint Tammany30 min
Apr 8, 2:54 AM CDTSpecial Weather StatementLIXOrleans, Saint Charles66 min
Apr 8, 2:56 AM CDTTornado WarningLIXSaint Tammany34 min
Apr 8, 3:03 AM CDTTornado WarningLIXSaint Charles, Saint John the Baptist14 min
Apr 8, 3:28 AM CDTSpecial Marine WarningLIX62 min
Apr 8, 3:42 AM CDTFlash Flood WarningLIXJefferson, Orleans, Saint Charles5 hr
Apr 8, 4:00 AM CDTTornado WarningLIXJefferson12 min
Apr 8, 4:15 AM CDTSpecial Weather StatementLIXJefferson, Lafourche60 min
Apr 8, 4:22 AM CDTTornado WarningLIXJefferson23 min
Apr 8, 4:31 AM CDTSpecial Marine WarningLIX89 min
Apr 8, 5:14 AM CDTSpecial Weather StatementLIXJefferson, Plaquemines, Terrebonne61 min
Apr 8, 5:19 AM CDTSpecial Marine WarningLIX56 min
Apr 8, 5:45 AM CDTSpecial Marine WarningLIX2 hr
Apr 8, 6:11 AM CDTSevere Thunderstorm WarningLIXPlaquemines34 min
Apr 8, 6:15 AM CDTSpecial Marine WarningLIX2 hr
Apr 8, 7:42 AM CDTSpecial Marine WarningLIX63 min
Apr 8, 9:55 AM CDTRiver Flood WarningLIXTangipahoa12 days
Apr 8, 9:58 AM CDTRiver Flood WarningLIXSaint Tammany4 days
Apr 8, 10:10 AM CDTRiver Flood WarningLIXAscension12 days
Apr 7, 11:12 PM CDTTornado WarningLIXWilkinson28 min
Apr 8, 3:13 AM CDTSpecial Weather StatementLIXHancock, Harrison62 min
Apr 8, 3:24 AM CDTTornado WarningLIXHancock36 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.