Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 10, NWS New Orleans, LA

March 23, 2021East Feliciana Parish, Pointe Coupee Parish, West Feliciana Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Mar 23, 2021, 7:09 AM CDT for East Feliciana Parish, Pointe Coupee Parish, West Feliciana Parish, Louisiana. 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, 7:09 AM CDT (12:09 UTC)
Expired
Mar 23, 2021, 8:00 AM CDT
In force
51 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties East Feliciana Parish, LA, Pointe Coupee Parish, LA, West Feliciana Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 0.2 hours before the alert went out and 175 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, Slidell Radar S, LA at 12:00Z on 2021-03-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 13 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 2021-03-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.1939Sfc1 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
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

Open this sounding in Storm Lab

The text

As transmitted.

547 
WUUS54 KLIX 231209
SVRLIX
LAC037-077-125-231300-
/O.NEW.KLIX.SV.W.0010.210323T1209Z-210323T1300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New Orleans LA
709 AM CDT Tue Mar 23 2021

The National Weather Service in New Orleans has issued a

* Severe Thunderstorm Warning for...
  West Feliciana Parish in southeastern Louisiana...
  Central Pointe Coupee Parish in southeastern Louisiana...
  Central East Feliciana Parish in southeastern Louisiana...

* Until 800 AM CDT.

* At 708 AM CDT, a severe thunderstorm was located near Morganza, or
  near New Roads, moving east at 45 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...
  New Roads, Jackson, St. Francisville, Clinton, Morganza, Wilson,
  Norwood, Wakefield, Spillman and Batchelor.

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
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3087 9167 3100 9141 3100 9101 3079 9096
      3063 9162
TIME...MOT...LOC 1208Z 252DEG 37KT 3079 9150 

HAIL...1.00IN
WIND...60MPH
 
$$
1 follow-up statement
313 
WWUS54 KLIX 231245
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
745 AM CDT Tue Mar 23 2021

LAC077-231254-
/O.CAN.KLIX.SV.W.0010.000000T0000Z-210323T1300Z/
Pointe Coupee LA-
745 AM CDT Tue Mar 23 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL 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 3075 9133 3099 9143 3100 9141 3100 9101
      3095 9100
TIME...MOT...LOC 1244Z 231DEG 40KT 3096 9121 

$$

LAC037-125-231300-
/O.CON.KLIX.SV.W.0010.000000T0000Z-210323T1300Z/
West Feliciana LA-East Feliciana LA-
745 AM CDT Tue Mar 23 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 AM CDT
FOR NORTHEASTERN WEST FELICIANA AND NORTHWESTERN EAST FELICIANA
PARISHES...

At 744 AM CDT, a severe thunderstorm was located near Spillman, or 8
miles north of Jackson, moving northeast at 45 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...
Jackson, Wilson, Norwood, Wakefield and Spillman. 

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
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3075 9133 3099 9143 3100 9141 3100 9101
      3095 9100
TIME...MOT...LOC 1244Z 231DEG 40KT 3096 9121 

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

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 23, 3:57 AM CDTWind AdvisoryLIXSaint Bernard, Saint John the Baptist11 hr
Mar 23, 6:24 AM CDTSpecial Weather StatementLIXPointe Coupee, West Feliciana66 min
Mar 23, 6:40 AM CDTSevere Thunderstorm WarningLIXPointe Coupee, West Feliciana35 min
Mar 23, 7:47 AM CDTSevere Thunderstorm WarningLIXEast Feliciana, West Feliciana43 min
Mar 23, 8:00 AM CDTSpecial Weather StatementLIXPointe Coupee30 min
Mar 23, 8:33 AM CDTSpecial Weather StatementLIXWest Feliciana27 min
Mar 23, 9:00 AM CDTSpecial Weather StatementLIXEast Feliciana30 min
Mar 23, 9:11 AM CDTSpecial Weather StatementLIXPointe Coupee34 min
Mar 23, 9:29 AM CDTSpecial Weather StatementLIXSaint Helena31 min
Mar 23, 9:42 AM CDTSevere Thunderstorm WarningLIXEast Baton Rouge, Iberville, Livingston, Pointe Coupee, West Baton Rouge34 min
Mar 23, 10:41 AM CDTRiver Flood WarningLIXSaint Tammany65 days
Mar 23, 10:41 AM CDTRiver Flood WarningLIXSaint Tammany7 days
Mar 23, 10:51 AM CDTRiver Flood WarningLIXSaint Helena62 hr
Mar 23, 10:54 AM CDTRiver Flood WarningLIXTangipahoa6 days
Mar 23, 10:57 AM CDTRiver Flood WarningLIXSaint Tammany4 days
Mar 23, 11:01 AM CDTRiver Flood WarningLIXSaint Tammany4 days
Mar 23, 11:22 AM CDTSpecial Weather StatementLIXAssumption23 min
Mar 23, 11:25 AM CDTSpecial Weather StatementLIXSaint Tammany35 min
Mar 23, 11:39 AM CDTSevere Thunderstorm WarningLIXSaint Tammany, Washington51 min
Mar 23, 11:46 AM CDTRiver Flood WarningLIXEast Baton Rouge, West Baton Rouge35 days
Mar 23, 11:49 AM CDTSevere Thunderstorm WarningLIXSaint Tammany41 min
Mar 23, 12:06 PM CDTSpecial Marine WarningLIX54 min
Mar 23, 12:47 PM CDTAreal Flood AdvisoryLIXJefferson, Orleans, Saint Bernard3 hr
Mar 23, 12:55 PM CDTAreal Flood AdvisoryLIXSaint Tammany3 hr
Mar 23, 1:08 PM CDTFlash Flood WarningLIXJefferson, Orleans2 hr
Mar 23, 1:18 PM CDTFlash Flood WarningLIXSaint Bernard2 hr
Mar 23, 1:20 PM CDTSpecial Marine WarningLIX85 min
Mar 23, 1:48 PM CDTAreal Flood AdvisoryLIXJefferson, Saint Charles3 hr
Mar 23, 2:38 PM CDTSpecial Marine WarningLIX97 min
Mar 23, 3:25 PM CDTAreal Flood AdvisoryLIXLafourche3 hr
Mar 23, 3:27 PM CDTAreal Flood AdvisoryLIXLafourche, Terrebonne3 hr
Mar 23, 3:38 PM CDTAreal Flood AdvisoryLIXLafourche, Terrebonne3 hr
Mar 23, 4:05 PM CDTFlash Flood WarningLIXLafourche, Terrebonne9 hr
Mar 23, 4:09 PM CDTAreal Flood AdvisoryLIXJefferson, Orleans, Saint Bernard3 hr

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.