Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 91, NWS Lake Charles, LA

May 19, 2021Calcasieu Parish, Jefferson Davis Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at May 19, 2021, 2:15 AM CDT for Calcasieu Parish, Jefferson Davis Parish, Louisiana. It was in force for 30 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 19, 2021, 2:15 AM CDT (07:15 UTC)
Expired: May 19, 2021, 2:45 AM CDT
In force: 30 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Calcasieu Parish, LA, Jefferson Davis Parish, LA

The radar

The Lake Charles radar (KLCH), 48 km from the middle of the area, began a volume at 07:15 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.

What was reported inside it

Time	Report	Where	Remark
May 19, 2:35 AM CDT	TSTM WND DMG	2 E Iowa, LA	CAMPERS TURNED OVER NEAR IOWA, LA.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 7.3 hours before the alert went out and 47 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 37 J/kg
Mixed-layer CIN: -296 J/kg
Mixed-layer LCL: 1094 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: -36 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

179 
WUUS54 KLCH 190715
SVRLCH
LAC019-053-190745-
/O.NEW.KLCH.SV.W.0091.210519T0715Z-210519T0745Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lake Charles LA
215 AM CDT Wed May 19 2021

The National Weather Service in Lake Charles has issued a

* Severe Thunderstorm Warning for...
  Central Jefferson Davis Parish in southwestern Louisiana...
  Southeastern Calcasieu Parish in southwestern Louisiana...

* Until 245 AM CDT.

* At 215 AM CDT, a severe thunderstorm was located near Iowa, moving
  northeast at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Lake Charles, Jennings, Welsh, Iowa, Elton, Fenton, Pine Island,
  Lebleu Settlement, Holmwood, Hathaway, Lacassine and Roanoke.

This includes the following highways...
 Interstate 10 in Louisiana between mile markers 34 and 66.
 Interstate 210 between mile markers 11 and 12.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and 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.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3024 9318 3044 9282 3044 9278 3047 9277
      3049 9273 3049 9270 3036 9263 3035 9263
      3034 9262 3032 9263 3028 9262 3024 9263
      3008 9309
TIME...MOT...LOC 0715Z 242DEG 38KT 3020 9305 

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

13

2 follow-up statements

363 
WWUS54 KLCH 190731
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
231 AM CDT Wed May 19 2021

LAC019-190740-
/O.CAN.KLCH.SV.W.0091.000000T0000Z-210519T0745Z/
Calcasieu LA-
231 AM CDT Wed May 19 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CALCASIEU 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 3022 9300 3026 9300 3026 9303 3032 9303
      3033 9302 3043 9283 3044 9282 3044 9278
      3046 9277 3032 9264 3017 9295
TIME...MOT...LOC 0730Z 231DEG 32KT 3029 9295 

$$

LAC053-190745-
/O.CON.KLCH.SV.W.0091.000000T0000Z-210519T0745Z/
Jefferson Davis LA-
231 AM CDT Wed May 19 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 AM CDT
FOR CENTRAL JEFFERSON DAVIS PARISH...

At 230 AM CDT, a severe thunderstorm was located near Iowa, moving
northeast at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Welsh, Iowa, Fenton, Pine Island, Hathaway and Lacassine. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3022 9300 3026 9300 3026 9303 3032 9303
      3033 9302 3043 9283 3044 9282 3044 9278
      3046 9277 3032 9264 3017 9295
TIME...MOT...LOC 0730Z 231DEG 32KT 3029 9295 

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

13

894 
WWUS54 KLCH 190740
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
240 AM CDT Wed May 19 2021

LAC053-190749-
/O.EXP.KLCH.SV.W.0091.000000T0000Z-210519T0745Z/
Jefferson Davis LA-
240 AM CDT Wed May 19 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL JEFFERSON DAVIS PARISH
WILL EXPIRE AT 245 AM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds and heavy rain are still possible with this thunderstorm.

LAT...LON 3022 9300 3026 9300 3026 9303 3032 9303
      3033 9302 3043 9283 3044 9282 3044 9278
      3046 9277 3032 9264 3017 9295
TIME...MOT...LOC 0739Z 242DEG 38KT 3033 9286 

$$

13

The office that day

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

Issued	Product	Office	Counties	Lasted
May 19, 12:25 AM CDT	Special Marine Warning	LCH		65 min
May 19, 1:32 AM CDT	Special Weather Statement	LCH	Calcasieu, Cameron, Jefferson Davis	58 min
May 19, 1:34 AM CDT	Special Marine Warning	LCH		56 min
May 19, 2:00 AM CDT	Tornado Warning	LCH	Calcasieu, Jefferson Davis	16 min
May 19, 2:34 AM CDT	Special Weather Statement	LCH	Acadia, Jefferson Davis, Vermilion	56 min
May 19, 3:28 AM CDT	Special Weather Statement	LCH	Acadia, Lafayette, Vermilion	47 min
May 19, 4:11 AM CDT	Wind Advisory	LCH	Cameron, Saint Martin	11 hr
May 19, 4:14 AM CDT	Coastal Flood Advisory	LCH	Cameron	15 hr

Nearby

Severe Thunderstorm Warnings in Louisiana, 2021 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.