Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 16, NWS Lake Charles, LA

March 23, 2021Saint Landry Parish, Saint Martin Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Mar 23, 2021, 8:45 AM CDT for Saint Landry Parish, Saint Martin Parish, Louisiana. It was in force for 45 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, 8:45 AM CDT (13:45 UTC)
Expired
Mar 23, 2021, 9:30 AM CDT
In force
45 min
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Saint Landry Parish, LA, Saint Martin Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 1.8 hours before the alert went out and 203 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°0°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.

498 
WUUS54 KLCH 231345
SVRLCH
LAC097-099-231430-
/O.NEW.KLCH.SV.W.0016.210323T1345Z-210323T1430Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lake Charles LA
845 AM CDT Tue Mar 23 2021

The National Weather Service in Lake Charles has issued a

* Severe Thunderstorm Warning for...
  Northwestern St. Martin Parish in south central Louisiana...
  Southeastern St. Landry Parish in central Louisiana...

* Until 930 AM CDT.

* At 845 AM CDT, a severe thunderstorm was located over Leonville,
  moving east at 35 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Opelousas, Krotz Springs, Leonville, Arnaudville, Melville, Port
  Barre, Washington, Grand Coteau and Atchafalaya National Wildlife
  Refuge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3036 9195 3037 9201 3036 9202 3062 9209
      3072 9174 3067 9173 3066 9175 3063 9174
      3062 9175 3056 9176 3051 9173 3051 9175
      3050 9175 3050 9170 3048 9169 3047 9167
      3044 9164 3039 9162
TIME...MOT...LOC 1345Z 251DEG 31KT 3050 9196 

HAIL...<.75IN
WIND...60MPH
 
$$

25

The office that day

Everything else NWS Lake Charles, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 23, 4:32 AM CDTSpecial Weather StatementLCHAcadia, Allen, Calcasieu, Cameron, Evangeline, Jefferson Davis and 1 more43 min
Mar 23, 5:06 AM CDTFlash Flood WarningLCHCalcasieu, Jefferson Davis84 min
Mar 23, 5:08 AM CDTFlash Flood WatchLCHAllen, Cameron, Evangeline, Lafayette, Saint Landry, Saint Martin8 hr
Mar 23, 5:17 AM CDTSpecial Weather StatementLCHAcadia, Allen, Calcasieu, Cameron, Evangeline, Jefferson Davis and 1 more43 min
Mar 23, 5:45 AM CDTFlash Flood WarningLCHAcadia, Allen, Calcasieu, Cameron, Evangeline, Jefferson Davis and 1 more2 hr
Mar 23, 6:01 AM CDTSpecial Weather StatementLCHAcadia, Allen, Calcasieu, Cameron, Evangeline, Jefferson Davis and 1 more44 min
Mar 23, 6:10 AM CDTTornado WarningLCHAcadia, Allen, Evangeline, Jefferson Davis, Saint Landry35 min
Mar 23, 6:36 AM CDTTornado WarningLCHSaint Landry24 min
Mar 23, 6:45 AM CDTSpecial Marine WarningLCH60 min
Mar 23, 6:51 AM CDTSevere Thunderstorm WarningLCHJefferson Davis24 min
Mar 23, 7:08 AM CDTSevere Thunderstorm WarningLCHAvoyelles, Evangeline, Saint Landry37 min
Mar 23, 7:19 AM CDTSevere Thunderstorm WarningLCHCameron26 min
Mar 23, 7:24 AM CDTSevere Thunderstorm WarningLCHAllen, Evangeline21 min
Mar 23, 7:30 AM CDTSpecial Marine WarningLCH30 min
Mar 23, 7:43 AM CDTFlash Flood WarningLCHAcadia, Allen, Avoyelles, Calcasieu, Cameron, Evangeline and 3 more2 hr
Mar 23, 7:43 AM CDTSevere Thunderstorm WarningLCHCameron62 min
Mar 23, 7:45 AM CDTSevere Thunderstorm WarningLCHAvoyelles, Saint Landry30 min
Mar 23, 8:16 AM CDTTornado WarningLCHSaint Landry29 min
Mar 23, 8:24 AM CDTTornado WarningLCHCameron, Vermilion36 min
Mar 23, 8:53 AM CDTTornado WarningLCHAcadia, Lafayette, Vermilion37 min
Mar 23, 9:25 AM CDTSevere Thunderstorm WarningLCHIberia, Lafayette, Saint Martin, Vermilion50 min
Mar 23, 9:48 AM CDTAreal Flood WarningLCHAcadia, Allen, Avoyelles, Calcasieu, Cameron, Evangeline and 2 more3 hr
Mar 23, 10:13 AM CDTSevere Thunderstorm WarningLCHIberia, Saint Martin32 min
Mar 23, 10:44 AM CDTSpecial Marine WarningLCH16 min
Mar 23, 11:58 AM CDTRiver Flood WarningLCHCalcasieu21 days
Mar 23, 11:58 AM CDTRiver Flood WarningLCHAcadia, Evangeline, Saint Landry4 days
Mar 23, 11:58 AM CDTRiver Flood WarningLCHCalcasieu5 days
Mar 23, 12:08 PM CDTSpecial Marine WarningLCH52 min
Mar 23, 3:19 PM CDTFlash Flood WarningLCHIberia, St. Mary116 min
Mar 23, 3:43 PM CDTSmall Craft AdvisoryLCH12 hr
Mar 23, 6:00 PM CDTSpecial Marine WarningLCH90 min

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.