Alert archive / Texas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 13, NWS Lake Charles, LA

January 20, 2017Hardin County, Jefferson County, Texas

NWS Lake Charles, LA issued this severe thunderstorm warning at Jan 20, 2017, 7:41 PM CST for Hardin County, Jefferson County, Texas. It was in force for 34 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, 7:41 PM CST (01:41 UTC)
Expired: Jan 20, 2017, 8:15 PM CST
In force: 34 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Hardin County, TX, Jefferson County, TX

The radar

The Houston radar (KHGX), 94 km from the middle of the area, began a volume at 01:42 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, 1.7 hours before the alert went out and 112 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.

548 
WUUS54 KLCH 210141
SVRLCH
TXC199-245-210215-
/O.NEW.KLCH.SV.W.0013.170121T0141Z-170121T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lake Charles LA
741 PM CST FRI JAN 20 2017

The National Weather Service in Lake Charles has issued a

* Severe Thunderstorm Warning for...
  Northwestern Jefferson County in southeastern Texas...
  South central Hardin County in southeastern Texas...

* Until 815 PM CST

* At 741 PM CST, a severe thunderstorm was located near Nome, moving
  northeast at 45 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...
  Beaumont, Port Arthur, Sour Lake, Nome, Bevil Oaks, China and
  Fannett.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

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

LAT...LON 3027 9436 2994 9404 2985 9436 2989 9436
      2989 9444 3011 9445 3011 9450
TIME...MOT...LOC 0141Z 242DEG 38KT 2994 9444 

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

24

1 follow-up statement

773 
WWUS54 KLCH 210210
SVSLCH

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

TXC199-245-210220-
/O.EXP.KLCH.SV.W.0013.000000T0000Z-170121T0215Z/
Jefferson TX-Hardin TX-
810 PM CST FRI JAN 20 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN JEFFERSON AND
SOUTH CENTRAL HARDIN COUNTIES WILL EXPIRE AT 815 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 3027 9436 2994 9404 2985 9436 2989 9436
      2989 9444 3011 9445 3011 9450
TIME...MOT...LOC 0210Z 242DEG 38KT 3008 9413 

$$

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, 7:48 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, 8:15 PM CST	Tornado Warning	LCH	Jefferson, Orange	30 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

Severe Thunderstorm Warnings in Texas, 2017 Every severe thunderstorm warning 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.