Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 118, NWS Lake Charles, LA

October 27, 20215 parishes in Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Oct 27, 2021, 2:24 PM CDT for 5 parishes in Louisiana. It was in force for 66 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
Oct 27, 2021, 2:24 PM CDT (19:24 UTC)
Expired
Oct 27, 2021, 3:30 PM CDT
In force
66 min
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

Counties Iberia Parish, LA, Lafayette Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA, Vermilion Parish, LA

The radar

The Lake Charles radar (KLCH), 118 km from the middle of the area, began a volume at 19:28 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Oct 27, 7:55 AM CDTTornado WatchSPC9 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 7.4 hours before the alert went out and 116 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 12:00Z on 2021-10-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1422 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, Lake Charles Mun, LA at 12:00Z on 2021-10-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 160 square meters per square second.193958Sfc1 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
1422 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
604 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
160 m²/s²
0-3 km storm-relative helicity
255 m²/s²
Significant tornado parameter
1.1
Supercell composite
7.1

Open this sounding in Storm Lab

The text

As transmitted.

921 
WUUS54 KLCH 271924
SVRLCH
LAC045-055-097-099-113-272030-
/O.NEW.KLCH.SV.W.0118.211027T1924Z-211027T2030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lake Charles LA
224 PM CDT Wed Oct 27 2021

The National Weather Service in Lake Charles has issued a

* Severe Thunderstorm Warning for...
  Northwestern Iberia Parish in south central Louisiana...
  Lafayette Parish in south central Louisiana...
  Vermilion Parish in southwestern Louisiana...
  St. Martin Parish in south central Louisiana...
  Eastern St. Landry Parish in central Louisiana...

* Until 330 PM CDT.

* At 224 PM CDT, severe thunderstorms were located along a line
  extending from near Melville to near Lafayette to near Pecan
  Island, moving east at 20 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Lafayette, New Iberia, Abbeville, Catahoula, Scott, Breaux Bridge,
  Carencro, St. Martinville, Kaplan, Krotz Springs, Leonville,
  Arnaudville, Melville, Palmetto, Freshwater City, Forked Island,
  Intracoastal City, Pecan Island, Avery Island and Broussard.

This includes the following highways...
 Interstate 10 in Louisiana between mile markers 93 and 127.
 Interstate 49 between mile markers 1 and 13.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 400 PM CDT for south central,
central and southwestern Louisiana.

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

A Tornado Watch remains in effect until 400 PM CDT for south central,
central and southwestern Louisiana.

&&

LAT...LON 2958 9262 3078 9186 3079 9177 3050 9175
      3018 9147 2976 9187 2977 9187 2984 9190
      2983 9191 2983 9197 2972 9215 2975 9221
      2962 9211 2962 9201 2960 9207 2959 9206
      2959 9204 2958 9205 2953 9231
TIME...MOT...LOC 1924Z 273DEG 19KT 3071 9181 3021 9199 2963 9254 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Brazzell
1 follow-up statement
512 
WWUS54 KLCH 271955
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
255 PM CDT Wed Oct 27 2021

LAC045-055-097-099-113-272030-
/O.CON.KLCH.SV.W.0118.000000T0000Z-211027T2030Z/
Iberia LA-Lafayette LA-Vermilion LA-St. Martin LA-St. Landry LA-
255 PM CDT Wed Oct 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM CDT
FOR NORTHWESTERN IBERIA...LAFAYETTE...EASTERN VERMILION...ST. MARTIN
AND EASTERN ST. LANDRY PARISHES...

At 255 PM CDT, severe thunderstorms were located along a line
extending from near Morganza to near Breaux Bridge to near Pecan
Island, moving east at 10 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Lafayette, New Iberia, Abbeville, Catahoula, Scott, Breaux Bridge,
Carencro, St. Martinville, Kaplan, Krotz Springs, Leonville,
Arnaudville, Melville, Freshwater City, Forked Island, Intracoastal
City, Pecan Island, Avery Island, Broussard and Youngsville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 400 PM CDT for south central,
central and southwestern Louisiana.

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

&&

LAT...LON 2957 9254 3077 9183 3079 9177 3050 9175
      3018 9147 2976 9187 2977 9187 2984 9190
      2983 9191 2983 9197 2972 9215 2975 9221
      2962 9211 2962 9201 2960 9207 2959 9206
      2959 9204 2958 9205 2953 9231
TIME...MOT...LOC 1955Z 270DEG 9KT 3070 9163 3021 9188 2962 9236 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Brazzell

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 27, 7:22 AM CDTSpecial Marine WarningLCH38 min
Oct 27, 8:01 AM CDTSpecial Marine WarningLCH25 min
Oct 27, 9:21 AM CDTTornado WarningLCHCalcasieu24 min
Oct 27, 9:41 AM CDTTornado WarningLCHCalcasieu34 min
Oct 27, 10:09 AM CDTTornado WarningLCHBeauregard, Calcasieu36 min
Oct 27, 10:39 AM CDTTornado Warning Tornado observedLCHBeauregard36 min
Oct 27, 11:04 AM CDTSevere Thunderstorm WarningLCHCalcasieu26 min
Oct 27, 11:13 AM CDTSpecial Marine WarningLCH47 min
Oct 27, 11:14 AM CDTSevere Thunderstorm WarningLCHCameron31 min
Oct 27, 11:19 AM CDTSevere Thunderstorm WarningLCHRapides26 min
Oct 27, 11:30 AM CDTSevere Thunderstorm Warning Considerable damage threatLCHAcadia, Allen, Beauregard, Calcasieu, Cameron, Evangeline and 3 more60 min
Oct 27, 11:33 AM CDTSpecial Marine WarningLCH57 min
Oct 27, 11:46 AM CDTTornado Warning Tornado observedLCHBeauregard, Calcasieu17 min
Oct 27, 11:53 AM CDTTornado WarningLCHCalcasieu37 min
Oct 27, 11:55 AM CDTTornado WarningLCHCalcasieu, Cameron35 min
Oct 27, 12:27 PM CDTSevere Thunderstorm Warning Considerable damage threatLCHAcadia, Allen, Beauregard, Calcasieu, Cameron, Evangeline and 4 more63 min
Oct 27, 12:31 PM CDTTornado WarningLCHAllen, Beauregard, Vernon17 min
Oct 27, 12:35 PM CDTSpecial Marine WarningLCH55 min
Oct 27, 12:56 PM CDTSevere Thunderstorm WarningLCHAllen, Evangeline, Rapides, Vernon34 min
Oct 27, 1:26 PM CDTSevere Thunderstorm WarningLCHAllen, Avoyelles, Evangeline, Rapides, Saint Landry34 min
Oct 27, 1:30 PM CDTSevere Thunderstorm WarningLCHAcadia, Cameron, Evangeline, Iberia, Lafayette, Saint Landry and 3 more60 min
Oct 27, 1:31 PM CDTSpecial Marine WarningLCH59 min
Oct 27, 1:56 PM CDTSpecial Weather StatementLCHAvoyelles34 min
Oct 27, 2:06 PM CDTTornado WarningLCHCameron, Vermilion10 min
Oct 27, 2:22 PM CDTSpecial Marine WarningLCH53 min
Oct 27, 3:30 PM CDTSevere Thunderstorm WarningLCHIberia, Saint Martin, St. Mary, Vermilion60 min
Oct 27, 4:00 PM CDTSpecial Marine WarningLCH60 min
Oct 27, 4:29 PM CDTSevere Thunderstorm WarningLCHIberia, Saint Martin, St. Mary61 min
Oct 27, 5:00 PM CDTSpecial Marine WarningLCH39 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; radar from the NEXRAD Level II archive.