Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 77, NWS Lake Charles, LA

May 11, 2021Jasper County, Tyler County, Texas

NWS Lake Charles, LA issued this severe thunderstorm warning at May 11, 2021, 5:58 PM CDT for Jasper County, Tyler County, Texas. It was in force for 62 min. 2 reports 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 11, 2021, 5:58 PM CDT (22:58 UTC)
Expired: May 11, 2021, 7:00 PM CDT
In force: 62 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, Tyler County, TX

The radar

The Ft Polk radar (KPOE), 142 km from the middle of the area, began a volume at 22:59 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 11, 6:15 PM CDT	HAIL 1	5 S Warren, TX	QUARTER SIZE HAIL REPORTED 5 MILES SOUTH OF WARREN, TX.
May 11, 6:45 PM CDT	TSTM WND DMG	3 Ne Woodville, TX	TREES REPORTED DOWN IN TYLER COUNTY, TX.

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

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, 11.0 hours before the alert went out and 144 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.

500 
WUUS54 KLCH 112258
SVRLCH
TXC241-457-120000-
/O.NEW.KLCH.SV.W.0077.210511T2258Z-210512T0000Z/

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

The National Weather Service in Lake Charles has issued a

* Severe Thunderstorm Warning for...
  Tyler County in southeastern Texas...
  Northwestern Jasper County in southeastern Texas...

* Until 700 PM CDT.

* At 557 PM CDT, severe thunderstorms were located along a line
  extending from near Diboll to near Chester to 6 miles north of
  Alabama-Coushatta Reservation to 6 miles northeast of Goodrich to
  near Shepherd, moving east at 30 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...
  Woodville, Colmesneil, Chester, Warren, Rockland, Ivanhoe and
  Hillister.

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 3106 9456 3105 9449 3103 9447 3107 9427
      3089 9425 3076 9421 3060 9430 3053 9441
      3053 9454 3101 9466
TIME...MOT...LOC 2257Z 276DEG 27KT 3122 9469 3090 9467 3082 9474 3065
9484 3052 9495

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

Rua

1 follow-up statement

862 
WWUS54 KLCH 112336
SVSLCH

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

TXC241-457-120000-
/O.CON.KLCH.SV.W.0077.000000T0000Z-210512T0000Z/
Tyler TX-Jasper TX-
636 PM CDT Tue May 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM CDT
FOR CENTRAL TYLER AND NORTHWESTERN JASPER COUNTIES...

At 635 PM CDT, severe thunderstorms were located along a line
extending from 12 miles southeast of Huntington to near Colmesneil to
Woodville to 6 miles west of Warren to near Votaw, moving east at 30
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...
Woodville, Colmesneil, Warren, Rockland, Ivanhoe and Hillister. 

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 3065 9457 3079 9449 3088 9445 3103 9446
      3107 9427 3089 9425 3076 9421 3060 9430
      3053 9441 3053 9454
TIME...MOT...LOC 2335Z 275DEG 27KT 3120 9439 3088 9438 3079 9441 3062
9451 3049 9462

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

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, 6:27 PM CDT	Severe Thunderstorm Warning	LCH	Hardin	63 min
May 11, 6:54 PM CDT	Severe Thunderstorm Warning	LCH	Jasper, Newton, Tyler	25 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.