Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Lake Charles, LA

October 15, 2021Jefferson County, Texas

NWS Lake Charles, LA issued this special weather statement at Oct 15, 2021, 6:07 PM CDT for Jefferson County, Texas. It was in force for 23 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: Oct 15, 2021, 6:07 PM CDT (23:07 UTC)
Expired: Oct 15, 2021, 6:30 PM CDT
In force: 23 min
Issued by: NWS Lake Charles, LA
Hail: 0.00 in
Wind: 30

County Jefferson County, TX

The radar

The Houston radar (KHGX), 101 km from the middle of the area, began a volume at 23:11 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, 11.1 hours before the alert went out and 105 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: 1169 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 649 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 56 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

As transmitted.

444 
WWUS84 KLCH 152307
SPSLCH

Special Weather Statement
National Weather Service Lake Charles LA
607 PM CDT Fri Oct 15 2021
 
TXZ215-152330-
Jefferson TX-
607 PM CDT Fri Oct 15 2021

...A strong thunderstorm will impact portions of northwestern
Jefferson County through 630 PM CDT...

At 607 PM CDT, Doppler radar was tracking a strong thunderstorm over
China, or near Nome, moving southeast at 20 mph.

HAZARD...Winds in excess of 30 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects.

Locations impacted include...
Beaumont, Nome, Hamshire, Bevil Oaks, China, Fannett and La Belle. 

This includes Interstate 10 in Texas between mile markers 852 and
833.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

&&

LAT...LON 3010 9441 3011 9438 3010 9436 3011 9435
      3010 9434 3012 9431 3012 9430 3015 9428
      3005 9403 3004 9404 3003 9402 2978 9418
      2994 9444 3005 9444
TIME...MOT...LOC 2307Z 295DEG 16KT 3002 9432 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH

$$

Warthen

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 15, 3:43 PM CDT	Gale Warning	LCH		20 hr
Oct 15, 3:43 PM CDT	Small Craft Advisory	LCH		42 hr
Oct 15, 5:05 PM CDT	Special Weather Statement	LCH	Vernon	25 min
Oct 15, 6:19 PM CDT	Special Weather Statement	LCH	Beauregard	26 min
Oct 15, 4:41 PM CDT	Special Weather Statement	LCH	Newton	49 min

Nearby

Special Weather Statements in Texas, 2021 Every special weather statement 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.