Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 126, NWS Lake Charles, LA

December 18, 2021Jefferson County, Orange County, Texas; Calcasieu Parish, Cameron Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Dec 18, 2021, 1:32 PM CST for Jefferson County, Orange County, Texas; Calcasieu Parish, Cameron Parish, Louisiana. It was in force for 58 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: Dec 18, 2021, 1:32 PM CST (19:32 UTC)
Expired: Dec 18, 2021, 2:30 PM CST
In force: 58 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Calcasieu Parish, LA, Cameron Parish, LA, Jefferson County, TX, Orange County, TX

The radar

The Lake Charles radar (KLCH), 46 km from the middle of the area, began a volume at 19:31 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 nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 7.5 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: 1750 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 441 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 120 m²/s²
0-3 km storm-relative helicity: 127 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 5.7

Open this sounding in Storm Lab

The text

As transmitted.

694 
WUUS54 KLCH 181932
SVRLCH
LAC019-023-TXC245-361-182030-
/O.NEW.KLCH.SV.W.0126.211218T1932Z-211218T2030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lake Charles LA
132 PM CST Sat Dec 18 2021

The National Weather Service in Lake Charles has issued a

* Severe Thunderstorm Warning for...
  Northwestern Cameron Parish in southwestern Louisiana...
  Southwestern Calcasieu Parish in southwestern Louisiana...
  East central Jefferson County in southeastern Texas...
  Southeastern Orange County in southeastern Texas...

* Until 230 PM CST.

* At 131 PM CST, severe thunderstorms were located along a line
  extending from near Edgerly to near Port Arthur, moving east at 30
  mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Port Arthur, Orange, Groves, Port Neches, Bridge City, Cameron,
  West Orange, Vinton, Grand Lake, Sabine National Wildlife, Sabine
  Pass, Johnsons Bayou, Toomey, Hackberry, Holly Beach, Pinehurst,
  Carlyss and Constance Beach.

This includes the following highways...
 Interstate 10 in Texas between mile markers 880 and 878.
 Interstate 10 in Louisiana between mile markers 1 and 9.

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 these storms. 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 these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 2972 9385 2980 9391 2985 9379 2997 9376
      3000 9379 2999 9386 2984 9395 2972 9386
      2976 9420 3021 9364 3008 9310 2993 9324
      3005 9328 3005 9333 2985 9335 2986 9344
      2982 9338 2984 9332 2976 9339
TIME...MOT...LOC 1931Z 266DEG 26KT 3019 9353 2981 9402 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

tingler

2 follow-up statements

652 
WWUS54 KLCH 182000
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
200 PM CST Sat Dec 18 2021

TXC245-361-182009-
/O.CAN.KLCH.SV.W.0126.000000T0000Z-211218T2030Z/
Jefferson TX-Orange TX-
200 PM CST Sat Dec 18 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL JEFFERSON AND
SOUTHEASTERN ORANGE COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 2972 9385 2980 9391 2985 9379 2997 9376
      3006 9369 3020 9359 3008 9310 2993 9324
      3005 9328 3005 9333 2985 9335 2986 9344
      2982 9338 2984 9332 2976 9339
TIME...MOT...LOC 1959Z 298DEG 28KT 3009 9332 2971 9376 

$$

LAC019-023-182030-
/O.CON.KLCH.SV.W.0126.000000T0000Z-211218T2030Z/
Cameron LA-Calcasieu LA-
200 PM CST Sat Dec 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM CST
FOR NORTHWESTERN CAMERON AND SOUTHWESTERN CALCASIEU PARISHES...

At 159 PM CST, severe thunderstorms were located along a line
extending from near Grand Lake to 7 miles southwest of Johnsons
Bayou, moving southeast at 30 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Cameron, Vinton, Grand Lake, Johnsons Bayou, Sabine National
Wildlife, Hackberry, Holly Beach, Toomey, Carlyss and Constance
Beach.

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 these storms.
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 these storms, and may lead to 
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 2972 9385 2980 9391 2985 9379 2997 9376
      3006 9369 3020 9359 3008 9310 2993 9324
      3005 9328 3005 9333 2985 9335 2986 9344
      2982 9338 2984 9332 2976 9339
TIME...MOT...LOC 1959Z 298DEG 28KT 3009 9332 2971 9376 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

tingler

601 
WWUS54 KLCH 182024
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
224 PM CST Sat Dec 18 2021

LAC019-023-182030-
/O.CON.KLCH.SV.W.0126.000000T0000Z-211218T2030Z/
Cameron LA-Calcasieu LA-
224 PM CST Sat Dec 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM CST
FOR NORTH CENTRAL CAMERON AND SOUTHEASTERN CALCASIEU PARISHES...

At 223 PM CST, severe thunderstorms were located along a line
extending from near Holmwood to near Holly Beach, moving east at 45
mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Cameron, Grand Lake, and Holly Beach. 

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 these storms.
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 these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 2975 9346 2982 9349 3011 9329 3008 9310
      2993 9324 3005 9328 3005 9333 2985 9335
      2986 9344 2982 9338 2984 9332 2976 9339
TIME...MOT...LOC 2023Z 268DEG 41KT 3008 9307 2973 9345 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

tingler

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 18, 11:26 AM CST	Special Weather Statement	LCH	Tyler	34 min
Dec 18, 11:52 AM CST	Special Weather Statement	LCH	Hardin	23 min
Dec 18, 12:11 PM CST	Special Weather Statement	LCH	Jasper, Newton	34 min
Dec 18, 12:13 PM CST	Special Weather Statement	LCH	Hardin	32 min
Dec 18, 12:28 PM CST	Severe Thunderstorm Warning	LCH	Hardin, Jasper, Newton, Tyler	45 min
Dec 18, 12:44 PM CST	Special Weather Statement	LCH	Jefferson, Orange	31 min
Dec 18, 12:52 PM CST	Severe Thunderstorm Warning	LCH	Newton	38 min
Dec 18, 3:25 AM CST	Small Craft Advisory	LCH		57 hr
Dec 18, 1:30 PM CST	Special Marine Warning	LCH		30 min
Dec 18, 1:30 PM CST	Severe Thunderstorm Warning	LCH	Allen, Beauregard, Calcasieu, Jefferson Davis, Vernon	49 min
Dec 18, 1:43 PM CST	Special Weather Statement	LCH	Rapides	32 min
Dec 18, 1:47 PM CST	Special Marine Warning	LCH		58 min
Dec 18, 2:15 PM CST	Special Weather Statement	LCH	Acadia, Allen, Evangeline, Jefferson Davis	45 min
Dec 18, 2:20 PM CST	Severe Thunderstorm Warning	LCH	Calcasieu, Cameron, Jefferson Davis	25 min
Dec 18, 2:45 PM CST	Special Weather Statement	LCH	Cameron	60 min
Dec 18, 2:50 PM CST	Special Marine Warning	LCH		85 min
Dec 18, 3:00 PM CST	Special Weather Statement	LCH	Acadia, Saint Landry	30 min
Dec 18, 3:56 PM CST	Special Weather Statement	LCH	Lafayette, Saint Martin	34 min
Dec 18, 4:40 PM CST	Special Weather Statement	LCH	Iberia, Lafayette, Saint Martin, St. Mary	65 min

Nearby

Severe Thunderstorm Warnings in Texas, 2021 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.