Alert archive / Texas / Tornado Warnings in 2017

Tornado Warning 6, NWS Lake Charles, LA

January 20, 2017Jefferson County, Orange County, Texas

NWS Lake Charles, LA issued this tornado warning at Jan 20, 2017, 8:15 PM CST for Jefferson County, Orange County, Texas. It was in force for 30 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: Jan 20, 2017, 8:15 PM CST (02:15 UTC)
Expired: Jan 20, 2017, 8:45 PM CST
In force: 30 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Jefferson County, TX, Orange County, TX

The radar

The Lake Charles radar (KLCH), 83 km from the middle of the area, began a volume at 02:19 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
Jan 20, 7:32 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 2.3 hours before the alert went out and 85 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: 627 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 842 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 156 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted.

925 
WFUS54 KLCH 210215
TORLCH
TXC245-361-210245-
/O.NEW.KLCH.TO.W.0006.170121T0215Z-170121T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lake Charles LA
815 PM CST FRI JAN 20 2017

The National Weather Service in Lake Charles has issued a

* Tornado Warning for...
  North central Jefferson County in southeastern Texas...
  Northwestern Orange County in southeastern Texas...

* Until 845 PM CST
    
* At 815 PM CST, a severe thunderstorm capable of producing a tornado
  was located over Rose City, or near Beaumont, moving northeast at
  45 mph.

  HAZARD...Tornado and quarter size hail. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* This dangerous storm will be near...
  Vidor and Pine Forest around 820 PM CST. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to an interior room on the lowest floor of a
sturdy building. Avoid windows. If you are outdoors, in a mobile
home, or in a vehicle, move to the closest substantial shelter and
protect yourself from flying debris.

&&

LAT...LON 3017 9415 3016 9411 3019 9411 3019 9410
      3020 9410 3020 9409 3021 9410 3024 9404
      3024 9395 3010 9384 3003 9412 3014 9420
TIME...MOT...LOC 0215Z 238DEG 38KT 3012 9408 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

24

1 follow-up statement

355 
WWUS54 KLCH 210236
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
836 PM CST FRI JAN 20 2017

TXC245-361-210246-
/O.EXP.KLCH.TO.W.0006.000000T0000Z-170121T0245Z/
Jefferson TX-Orange TX-
836 PM CST FRI JAN 20 2017

...THE TORNADO WARNING FOR NORTH CENTRAL JEFFERSON AND NORTHWESTERN
ORANGE COUNTIES WILL EXPIRE AT 845 PM CST...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.

A tornado watch remains in effect until 200 AM CST for southeastern
Texas.

LAT...LON 3017 9415 3016 9411 3019 9411 3019 9410
      3020 9410 3020 9409 3021 9410 3024 9404
      3024 9395 3010 9384 3003 9412 3014 9420
TIME...MOT...LOC 0236Z 238DEG 38KT 3023 9388 

$$

24

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 20, 7:11 PM CST	Special Weather Statement	LCH	Jefferson	34 min
Jan 20, 7:16 PM CST	Severe Thunderstorm Warning	LCH	Hardin, Jefferson, Orange	29 min
Jan 20, 7:27 PM CST	Special Weather Statement	LCH	Hardin	33 min
Jan 20, 7:40 PM CST	Severe Thunderstorm Warning	LCH	Hardin, Jasper, Jefferson, Newton, Orange	35 min
Jan 20, 7:41 PM CST	Severe Thunderstorm Warning	LCH	Hardin, Jefferson	34 min
Jan 20, 7:48 PM CST	Tornado Warning	LCH	Jefferson	27 min
Jan 20, 7:49 PM CST	Areal Flood Advisory	LCH	Hardin, Jasper, Jefferson, Newton, Orange	116 min
Jan 20, 8:03 PM CST	Severe Thunderstorm Warning	LCH	Jasper, Newton	42 min
Jan 20, 8:08 PM CST	Severe Thunderstorm Warning	LCH	Hardin, Jefferson, Orange	37 min
Jan 20, 8:32 PM CST	Tornado Warning	LCH	Jasper, Newton, Orange	28 min
Jan 20, 8:43 PM CST	River Flood Warning	LCH	Hardin, Jefferson	6 days
Jan 20, 11:42 PM CST	Special Weather Statement	LCH	Hardin, Jasper, Tyler	33 min
Jan 21, 12:23 AM CST	Special Weather Statement	LCH	Hardin, Jasper, Newton	52 min
Jan 21, 12:53 AM CST	Severe Thunderstorm Warning	LCH	Newton	67 min
Jan 21, 1:38 PM CST	Wind Advisory	LCH	Hardin, Jasper, Newton, Tyler	34 hr

Nearby

Tornado Warnings in Texas, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.