Alert archive / Texas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 5, NWS Lake Charles, LA

January 25, 2012Hardin County, Jasper County, Tyler County, Texas

NWS Lake Charles, LA issued this severe thunderstorm warning at Jan 25, 2012, 10:33 AM CST for Hardin County, Jasper County, Tyler County, Texas. It was in force for 57 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 25, 2012, 10:33 AM CST (16:33 UTC)
Expired: Jan 25, 2012, 11:30 AM CST
In force: 57 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon

Counties Hardin County, TX, Jasper County, TX, Tyler County, TX

The radar

The Lake Charles radar (KLCH), 139 km from the middle of the area, began a volume at 16:35 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 25, 7:56 AM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 4.6 hours before the alert went out and 140 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: 28 J/kg
Mixed-layer CIN: -201 J/kg
Mixed-layer LCL: 576 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 241 m²/s²
0-3 km storm-relative helicity: 341 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

356 
WUUS54 KLCH 251633
SVRLCH
TXC199-241-457-251730-
/O.NEW.KLCH.SV.W.0005.120125T1633Z-120125T1730Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1033 AM CST WED JAN 25 2012

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN HARDIN COUNTY IN SOUTHEAST TEXAS...
  THIS INCLUDES...WILDWOOD...THICKET...
  NORTHWESTERN JASPER COUNTY IN SOUTHEAST TEXAS...
  THIS INCLUDES EBENEZER...
  TYLER COUNTY IN SOUTHEAST TEXAS...
  THIS INCLUDES...WOODVILLE...WARREN...TOWN BLUFF...ROCKLAND...
  COLMESNEIL...CHESTER...

* UNTIL 1130 AM CST

* AT 1032 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF SEVERE THUNDERSTORMS...CAPABLE OF PRODUCING DAMAGING WINDS
  IN EXCESS OF 60 MPH...FROM 14 MILES NORTHWEST OF CHESTER TO 28
  MILES WEST OF THICKET...MOVING EAST AT 40 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  CHESTER BY 1050 AM CST...
  VOTAW...ROCKLAND AND COLMESNEIL BY 1105 AM CST...
  WOODVILLE AND THICKET BY 1110 AM CST...
  WILDWOOD AND WARREN BY 1120 AM CST...
  EBENEZER BY 1125 AM CST...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND HEAVY RAIN. STAY INDOORS...
AWAY FROM WINDOWS.

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. SEVERE
THUNDERSTORMS CAN PRODUCE TORNADOES SUDDENLY.

&&

PLEASE REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE AT
337-477-5285 EXTENSION 1.

LAT...LON 3050 9455 3101 9467 3106 9457 3104 9445
      3114 9399 3026 9436 3026 9466 3049 9473
TIME...MOT...LOC 1632Z 270DEG 35KT 3110 9471 3034 9507

$$

15

1 follow-up statement

816 
WWUS54 KLCH 251706
SVSLCH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1106 AM CST WED JAN 25 2012

TXC199-241-457-251730-
/O.CON.KLCH.SV.W.0005.000000T0000Z-120125T1730Z/
HARDIN TX-JASPER TX-TYLER TX-
1106 AM CST WED JAN 25 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 AM CST
FOR TYLER...NORTHWESTERN JASPER AND NORTHWESTERN HARDIN COUNTIES...

AT 1103 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM 10 MILES NORTHWEST OF ROCKLAND TO 9 MILES SOUTHWEST OF 
VOTAW..MOVING EAST AT 25 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 PM CST WEDNESDAY
AFTERNOON FOR SOUTHWESTERN LOUISIANA AND SOUTHEAST TEXAS.

&&

LAT...LON 3050 9455 3101 9467 3106 9457 3104 9445
      3114 9399 3026 9436 3026 9466 3049 9473
TIME...MOT...LOC 1705Z 252DEG 22KT 3114 9444 3038 9480

$$

66

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 25, 2:44 AM CST	Dense Fog Advisory	LCH		5 hr
Jan 25, 5:19 AM CST	Wind Advisory	LCH		13 hr
Jan 25, 11:31 AM CST	Severe Thunderstorm Warning	LCH	Jasper, Tyler	59 min
Jan 25, 12:05 PM CST	Tornado Warning	LCH	Hardin, Tyler	25 min
Jan 25, 12:29 PM CST	Tornado Warning	LCH	Jasper, Tyler	31 min
Jan 25, 12:59 PM CST	Tornado Warning	LCH	Jasper, Newton	31 min
Jan 25, 1:29 PM CST	Tornado Warning	LCH	Newton	31 min
Jan 25, 1:51 PM CST	Special Weather Statement	LCH	Jefferson, Orange	54 min
Jan 25, 2:18 PM CST	Areal Flood Advisory	LCH	Jefferson, Orange	117 min
Jan 25, 2:36 PM CST	Severe Thunderstorm Warning	LCH	Jasper, Jefferson, Newton, Orange	54 min
Jan 25, 3:03 PM CST	Flash Flood Warning	LCH	Jasper, Jefferson, Newton, Orange	3 hr
Jan 25, 3:30 PM CST	Severe Thunderstorm Warning	LCH	Newton, Orange	60 min

Nearby

Severe Thunderstorm Warnings in Texas, 2012 Every severe thunderstorm warning in 2012

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.