Alert archive / Texas / Special Weather Statements in 2011

Special Weather Statement, NWS Lake Charles, LA

December 20, 2011Hardin County, Texas

NWS Lake Charles, LA issued this special weather statement at Dec 20, 2011, 4:18 AM CST for Hardin 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: Dec 20, 2011, 4:18 AM CST (10:18 UTC)
Expired: Dec 20, 2011, 5:15 AM CST
In force: 57 min
Issued by: NWS Lake Charles, LA

County Hardin County, TX

The radar

The Houston radar (KHGX), 122 km from the middle of the area, began a volume at 10:21 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 00:00Z, 10.3 hours before the alert went out and 137 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1049 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 154 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Lake Charles, LA wrote its last area forecast discussion before this special weather statement went out at Dec 19, 11:34 PM CST, 4 hours 44 minutes earlier.

Area forecast discussion, Dec 19, 11:34 PM CST, 4 hours 44 minutes before

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Hazardous weather outlook, Dec 19, 5:21 AM CST, 22 hours 57 minutes before

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In the hours before

Special weather statement, Dec 20, 4:18 AM CST, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
418 AM CST TUE DEC 20 2011

TXZ180-201-201115-
HARDIN TX-TYLER TX-
418 AM CST TUE DEC 20 2011

...SIGNIFICANT WEATHER ADVISORY FOR HARDIN AND TYLER COUNTIES UNTIL
515 AM CST...

AT 413 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 5 MILES SOUTHWEST OF VOTAW...MOVING EAST AT 25
MPH.

* THE STRONG THUNDERSTORM WILL BE NEAR...
  VOTAW AND THICKET BY 425 AM...
  WILDWOOD BY 500 AM...
  VILLAGE MILLS BY 505 AM...

THE PRIMARY THREATS FROM THIS STORM ARE FREQUENT LIGHTNING AND WIND
GUSTS TO NEAR 40 MPH...WHICH COULD DOWN TREE LIMBS AND BLOW AROUND
UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE HOME OR BUILDING
UNTIL THIS STORM HAS PASSED.

LAT...LON 3050 9455 3056 9456 3060 9442 3038 9435
      3031 9468 3047 9473 3049 9473

JT

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 20, 5:54 AM CST	Areal Flood Advisory	LCH	Beauregard, Rapides, Vernon	111 min
Dec 20, 6:28 AM CST	Flash Flood Warning	LCH	Beauregard, Rapides, Vernon	3 hr
Dec 20, 7:29 AM CST	Severe Thunderstorm Warning	LCH	Beauregard	61 min
Dec 20, 8:25 AM CST	Tornado Warning	LCH	Beauregard, Calcasieu	35 min
Dec 20, 8:32 AM CST	Areal Flood Advisory	LCH	Allen, Beauregard, Calcasieu, Rapides, Vernon	118 min
Dec 20, 4:51 AM CST	Special Weather Statement	LCH	Hardin	54 min
Dec 20, 5:08 AM CST	Severe Thunderstorm Warning	LCH	Hardin, Jasper, Tyler	67 min

Nearby

Special Weather Statements in Texas, 2011 Every special weather statement in 2011

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.