Alert archive / Texas / Special Weather Statements in 2011

Special Weather Statement, NWS Lake Charles, LA

November 8, 2011Jefferson County, Texas

NWS Lake Charles, LA issued this special weather statement at Nov 8, 2011, 7:39 PM CST for Jefferson County, Texas. It was in force for 51 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: Nov 8, 2011, 7:39 PM CST (01:39 UTC)
Expired: Nov 8, 2011, 8:30 PM CST
In force: 51 min
Issued by: NWS Lake Charles, LA

County Jefferson County, TX

The radar

The Houston radar (KHGX), 89 km from the middle of the area, began a volume at 01:39 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, 1.7 hours before the alert went out and 107 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: 2040 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 540 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 108 m²/s²
0-3 km storm-relative helicity: 134 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 5.4

Open this sounding in Storm Lab

The text

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

627 
WWUS84 KLCH 090139
SPSLCH

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
739 PM CST TUE NOV 8 2011

TXZ215-090230-
JEFFERSON TX-
739 PM CST TUE NOV 8 2011

...SIGNIFICANT WEATHER ADVISORY FOR JEFFERSON COUNTY UNTIL 830 PM
CST...

AT 736 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 22 MILES SOUTH OF HAMSHIRE...MOVING NORTHEAST AT
35 MPH.

THE STRONG THUNDERSTORM WILL AFFECT AREAS IN AND AROUND...HAMSHIRE...
FANNETT...LA BELLE AND PORT ACRES.

THE PRIMARY THREATS FROM THIS STORM ARE FREQUENT LIGHTNING AND WIND
GUSTS 40 TO 50 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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CST WEDNESDAY MORNING
FOR SOUTHWESTERN LOUISIANA AND SOUTHEAST TEXAS.

LAT...LON 2957 9436 2980 9436 2998 9405 2967 9386
      2967 9403 2956 9435

$$
TINGLER

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 8, 7:46 PM CST	Special Marine Warning	LCH		44 min
Nov 8, 8:03 PM CST	Tornado Warning	LCH	Beauregard	29 min
Nov 8, 8:28 PM CST	Special Weather Statement	LCH	Beauregard, Calcasieu	47 min
Nov 9, 5:11 AM CST	Small Craft Advisory	LCH		37 hr
Nov 8, 6:08 PM CST	Special Weather Statement	LCH	Hardin	22 min
Nov 8, 6:27 PM CST	Special Weather Statement	LCH	Jasper	63 min
Nov 8, 7:06 PM CST	Tornado Warning	LCH	Jasper, Tyler	27 min
Nov 8, 7:37 PM CST	Special Weather Statement	LCH	Jasper, Newton	53 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.