Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 79, NWS Lake Charles, LA

May 11, 2021Jasper County, Newton County, Tyler County, Texas

NWS Lake Charles, LA issued this severe thunderstorm warning at May 11, 2021, 6:54 PM CDT for Jasper County, Newton County, Tyler County, Texas. It was in force for 25 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: May 11, 2021, 6:54 PM CDT (23:54 UTC)
Expired: May 11, 2021, 7:19 PM CDT
In force: 25 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Jasper County, TX, Newton County, TX, Tyler County, TX

The radar

The Lake Charles radar (KLCH), 99 km from the middle of the area, began a volume at 23:58 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.

Issued	Product	Office	Lasted
May 11, 5:22 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 11.9 hours before the alert went out and 101 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: 2925 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 472 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 155 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 11.9

Open this sounding in Storm Lab

The text

As transmitted.

889 
WUUS54 KLCH 112354
SVRLCH
TXC241-351-457-120045-
/O.NEW.KLCH.SV.W.0079.210511T2354Z-210512T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lake Charles LA
654 PM CDT Tue May 11 2021

The National Weather Service in Lake Charles has issued a

* Severe Thunderstorm Warning for...
  Southeastern Tyler County in southeastern Texas...
  West central Newton County in southeastern Texas...
  East central Jasper County in southeastern Texas...

* Until 745 PM CDT.

* At 654 PM CDT, a severe thunderstorm was located over Fred, 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...
  Kirbyville, Fred, Magnolia Springs, Roganville, Mt. Union and
  Bleakwood.

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 3091 9390 3074 9369 3053 9409 3053 9422
      3056 9428
TIME...MOT...LOC 2354Z 235DEG 30KT 3058 9415 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

Rua

1 follow-up statement

302 
WWUS54 KLCH 120019
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
719 PM CDT Tue May 11 2021

TXC241-351-457-120029-
/O.CAN.KLCH.SV.W.0079.000000T0000Z-210512T0045Z/
Tyler TX-Newton TX-Jasper TX-
719 PM CDT Tue May 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN TYLER...WEST
CENTRAL NEWTON AND EAST CENTRAL JASPER COUNTIES IS CANCELLED...
                
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 has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
southeastern Texas.

LAT...LON 3091 9390 3074 9369 3053 9409 3053 9422
      3056 9428
TIME...MOT...LOC 0018Z 235DEG 30KT 3070 9395 

$$

Rua

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 9:02 PM CDT	River Flood Warning	LCH	Jasper, Tyler	21 days
May 11, 3:20 AM CDT	Flash Flood Watch	LCH	Hardin, Jasper, Newton, Tyler	34 hr
May 11, 6:42 AM CDT	Special Weather Statement	LCH	Newton	33 min
May 11, 7:23 AM CDT	Special Weather Statement	LCH	Jasper	22 min
May 11, 7:39 AM CDT	Special Weather Statement	LCH	Hardin	51 min
May 11, 5:58 PM CDT	Severe Thunderstorm Warning	LCH	Jasper, Tyler	62 min
May 11, 6:27 PM CDT	Severe Thunderstorm Warning	LCH	Hardin	63 min

Nearby

Severe Thunderstorm Warnings in Texas, 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.