Alert archive / Louisiana / Wind Advisories in 2012

Wind Advisory 10, NWS Lake Charles, LA

March 11, 2012Cameron Parish, Lafayette Parish, Saint Martin Parish, Louisiana

NWS Lake Charles, LA issued this wind advisory at Mar 11, 2012, 2:52 PM CDT for Cameron Parish, Lafayette Parish, Saint Martin Parish, Louisiana. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Mar 11, 2012, 2:52 PM CDT (19:52 UTC)
Expired
Mar 11, 2012, 7:00 PM CDT
In force
4 hr
Issued by
NWS Lake Charles, LA

Counties Cameron Parish, LA, Lafayette Parish, LA, Saint Martin Parish, LA

The radar

The Lake Charles radar (KLCH), 89 km from the middle of the area, began a volume at 19:56 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, 7.9 hours before the alert went out and 88 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-pSkew-T log-p diagram, Lake Charles Mun, LA at 12:00Z on 2012-03-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 182 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 12:00Z on 2012-03-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 246 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
182 J/kg
Mixed-layer CIN
-71 J/kg
Mixed-layer LCL
452 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
246 m²/s²
0-3 km storm-relative helicity
294 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

Open this sounding in Storm Lab

The text

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

815 
WWUS74 KLCH 111952
NPWLCH

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE LAKE CHARLES LA
252 PM CDT SUN MAR 11 2012

...STRONG SOUTHERLY WINDS TO CONTINUE DURING THE AFTERNOON...

.A TIGHT PRESSURE GRADIENT CAUSED BY A SURFACE LOW MOVING THROUGH
NORTHEAST TEXAS WILL PRODUCE STRONG AND GUSTY SOUTHERLY WINDS.
THESE WINDS WILL DECREASE THIS EVENING AS THE LOW MOVES OFF TO THE
NORTHEAST.

LAZ041>045-052>055-073-074-TXZ215-216-120000-
/O.NEW.KLCH.WI.Y.0010.120311T1952Z-120312T0000Z/
CALCASIEU-JEFFERSON DAVIS-ACADIA-LAFAYETTE-UPPER ST. MARTIN-
VERMILION-IBERIA-ST. MARY-LOWER ST. MARTIN-WEST CAMERON-
EAST CAMERON-JEFFERSON-ORANGE-
INCLUDING THE CITIES OF...LAKE CHARLES...SULPHUR...JENNINGS...
WELSH...LAKE ARTHUR...CROWLEY...RAYNE...CHURCH POINT...
LAFAYETTE...BREAUX BRIDGE...ST. MARTINVILLE...ABBEVILLE...
KAPLAN...NEW IBERIA...MORGAN CITY...FRANKLIN...PATTERSON...
BERWICK...BAYOU VISTA...STEPHENSVILLE...HACKBERRY...HOLLY BEACH...
CAMERON...GRAND CHENIER...BEAUMONT...PORT ARTHUR...ORANGE...
VIDOR...BRIDGE CITY
252 PM CDT SUN MAR 11 2012

...WIND ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT UNTIL 7 PM CDT THIS EVENING. 

* TIMING...REMAINDER OF THIS AFTERNOON.

* WINDS...SOUTH TO SOUTHEAST 20 TO 25 MPH WITH GUSTS TO 35 MPH.

* IMPACTS...LOOSE OBJECTS SUCH AS GARBAGE CANS WILL BE BLOWN
  AROUND. DRIVING MAY BE DIFFICULT FOR HIGH PROFILE VEHICLES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT SUSTAINED WINDS OF 20 TO 34 MPH ARE
EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...
ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION.

WINDS OVER LOCAL WATERWAYS COULD BE 5 MPH HIGHER THAN OVER LAND.
SMALL BOATS WILL BE ESPECIALLY PRONE TO CAPSIZING.

&&

$$

RUA
1 follow-up statement
895 
WWUS74 KLCH 120008
NPWLCH

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE LAKE CHARLES LA
708 PM CDT SUN MAR 11 2012

...WINDS HAVE DIMINISHED...

.THE FRONTAL BOUNDARY TO THE WEST HAS BEGUN TO WASH OUT AND THE
PRESSURE GRADIENT IS WEAKENING. IN RESPONSE, WINDS HAVE DIMINISHED.

LAZ041>045-052>055-073-074-TXZ215-216-120115-
/O.EXP.KLCH.WI.Y.0010.000000T0000Z-120312T0000Z/
CALCASIEU-JEFFERSON DAVIS-ACADIA-LAFAYETTE-UPPER ST. MARTIN-
VERMILION-IBERIA-ST. MARY-LOWER ST. MARTIN-WEST CAMERON-
EAST CAMERON-JEFFERSON-ORANGE-
INCLUDING THE CITIES OF...LAKE CHARLES...SULPHUR...JENNINGS...
WELSH...LAKE ARTHUR...CROWLEY...RAYNE...CHURCH POINT...
LAFAYETTE...BREAUX BRIDGE...ST. MARTINVILLE...ABBEVILLE...
KAPLAN...NEW IBERIA...MORGAN CITY...FRANKLIN...PATTERSON...
BERWICK...BAYOU VISTA...STEPHENSVILLE...HACKBERRY...HOLLY BEACH...
CAMERON...GRAND CHENIER...BEAUMONT...PORT ARTHUR...ORANGE...
VIDOR...BRIDGE CITY
708 PM CDT SUN MAR 11 2012

...WIND ADVISORY HAS EXPIRED...

WINDS REACHING ADVISORY CRITERIA ARE NO LONGER EXPECTED.

$$

SWEENEY

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 11, 2:55 PM CDTRiver Flood WarningLCHCalcasieu19 hr
Mar 11, 5:29 PM CDTSpecial Weather StatementLCHBeauregard61 min
Mar 11, 6:41 PM CDTSpecial Weather StatementLCHRapides64 min

Nearby

Wind Advisories in Louisiana, 2012Wind Advisories in Texas, 2012Every wind advisory 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.