Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 9, NWS New Orleans, LA

March 23, 2021Pointe Coupee Parish, West Feliciana Parish, Louisiana; Wilkinson County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Mar 23, 2021, 6:40 AM CDT for Pointe Coupee Parish, West Feliciana Parish, Louisiana; Wilkinson County, Mississippi. It was in force for 35 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, 6:40 AM CDT (11:40 UTC)
Expired
Mar 23, 2021, 7:15 AM CDT
In force
35 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
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, 11.7 hours before the alert went out and 165 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 2021-03-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 82 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 2021-03-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 183 square meters per square second.1939587897Sfc1 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
82 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
715 m above ground
0-6 km bulk shear
74 kt
0-1 km storm-relative helicity
183 m²/s²
0-3 km storm-relative helicity
405 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

002 
WUUS54 KLIX 231140
SVRLIX
LAC077-125-MSC157-231215-
/O.NEW.KLIX.SV.W.0009.210323T1140Z-210323T1215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New Orleans LA
640 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...
  Pointe Coupee Parish in southeastern Louisiana...
  South central Wilkinson County in southern Mississippi...

* Until 715 AM CDT.

* At 639 AM CDT, a severe thunderstorm was located near Melville,
  moving northeast 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...
  New Roads, St. Francisville, Morganza, Wakefield and Batchelor. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3105 9143 3081 9123 3058 9175 3066 9175
      3067 9173 3071 9173 3074 9176 3078 9176
      3082 9181 3083 9180 3085 9181
TIME...MOT...LOC 1139Z 242DEG 32KT 3070 9182 

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, 7:09 AM CDTSevere Thunderstorm WarningLIXEast Feliciana, Pointe Coupee, West Feliciana51 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
Mar 23, 8:30 AM CDTSpecial Weather StatementLIXAmite30 min
Mar 23, 9:57 AM CDTSpecial Weather StatementLIXPike33 min
Mar 23, 10:13 AM CDTRiver Flood WarningLIXHarrison70 hr
Mar 23, 10:13 AM CDTRiver Flood WarningLIXHarrison4 days
Mar 23, 10:31 AM CDTSpecial Weather StatementLIXWalthall29 min
Mar 23, 10:41 AM CDTRiver Flood WarningLIXPearl River4 days
Mar 23, 10:41 AM CDTRiver Flood WarningLIXPike, Walthall62 hr
Mar 23, 11:39 AM CDTRiver Flood WarningLIXJackson21 days
Mar 23, 12:11 PM CDTSevere Thunderstorm WarningLIXHancock, Harrison, Pearl River38 min
Mar 23, 12:20 PM CDTSpecial Weather StatementLIXHancock25 min
Mar 23, 12:41 PM CDTSpecial Weather StatementLIXHarrison34 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.