Alert archive / Louisiana / Special Weather Statements in 2013

Special Weather Statement, NWS Lake Charles, LA

February 22, 2013St. Mary Parish, Louisiana

NWS Lake Charles, LA issued this special weather statement at Feb 22, 2013, 7:21 PM CST for St. Mary Parish, Louisiana. It was in force for 54 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
Feb 22, 2013, 7:21 PM CST (01:21 UTC)
Expired
Feb 22, 2013, 8:15 PM CST
In force
54 min
Issued by
NWS Lake Charles, LA

County St. Mary Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 1.4 hours before the alert went out and 170 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, Slidell Radar S, LA at 00:00Z on 2013-02-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 2013-02-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 288 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
797 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
288 m²/s²
0-3 km storm-relative helicity
428 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.9

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 Feb 22, 5:48 PM CST, 1 hour 33 minutes earlier.

Area forecast discussion, Feb 22, 5:48 PM CST, 1 hour 33 minutes before
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Hazardous weather outlook, Feb 22, 6:00 AM CST, 13 hours 21 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAKE CHARLES LA
600 AM CST FRI FEB 22 2013

LAZ027>033-041>045-052>055-073-074-TXZ180-201-215-216-259>262-
231200-
VERNON-RAPIDES-AVOYELLES-BEAUREGARD-ALLEN-EVANGELINE-ST. LANDRY-
CALCASIEU-JEFFERSON DAVIS-ACADIA-LAFAYETTE-UPPER ST. MARTIN-
VERMILION-IBERIA-ST. MARY-LOWER ST. MARTIN-WEST CAMERON-
EAST CAMERON-TYLER-HARDIN-JEFFERSON-ORANGE-NORTHERN JASPER-
NORTHERN NEWTON-SOUTHERN JASPER-SOUTHERN NEWTON-
600 AM CST FRI FEB 22 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
LOUISIANA...SOUTH CENTRAL LOUISIANA...SOUTHWEST LOUISIANA...WEST
CENTRAL LOUISIANA AND SOUTHEAST TEXAS.

.DAY ONE...TODAY AND TONIGHT
THERE IS A CHANCE FOR SHOWERS ACROSS ALL BUT THE LAKES AREA OF
SOUTHEAST TEXAS THROUGH TONIGHT AS A COLD FRONT STALLS JUST OFF
THE COAST. RAINFALL WILL BE LIGHT...WITH AMOUNTS AVERAGING AROUND
ONE QUARTER OF AN INCH.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY
RAIN CHANCES WILL DIMINISH BRIEFLY SATURDAY...THEN INCREASE AGAIN
ON SUNDAY AS ANOTHER STORM SYSTEM MOVES INTO THE AREA. ANOTHER COLD
FRONT WILL MOVE INTO THE REGION SUNDAY NIGHT...WITH LOW PRESSURE
DEVELOPING ALONG IT. THIS WILL BRING THE POSSIBILITY OF A FEW
THUNDERSTORMS FOR PORTIONS OF THE AREA...ALTHOUGH SEVERE WEATHER
IS NOT EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

GMZ430-432-435-450-452-455-470-472-475-231200-
SABINE LAKE-CALCASIEU LAKE-VERMILION BAY-
COASTAL WATERS FROM CAMERON LA TO HIGH ISLAND TX OUT 20 NM-
COASTAL WATERS FROM INTRACOASTAL CITY TO CAMERON LA OUT 20 NM-
COASTAL WATERS FROM LOWER ATCHAFALAYA RIVER TO INTRACOASTAL CITY
LA OUT 20 NM-
WATERS FROM CAMERON LA TO HIGH ISLAND TX FROM 20 TO 60 NM-
WATERS FROM  INTRACOASTAL CITY TO CAMERON LA FROM 20 TO 60 NM-
WATERS FROM LOWER ATCHAFALAYA RIVER TO INTRACOASTAL CITY LA FROM
20 TO 60 NM-
600 AM CST FRI FEB 22 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE NORTHWEST
GULF OF MEXICO.

.DAY ONE...TODAY AND TONIGHT
A COLD FRONT WILL STALL OVER THE COASTAL WATERS TODAY...KEEPING A
CHANCE FOR SHOWERS OVER THE AREA. IN ADDITION...AREAS OF FOG WILL
BE POSSIBLE IN THE VICINITY OF THE FRONT...WITH ISOLATED
VISIBILITIES LESS THAN ONE MILE.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY
ANOTHER FRONT WILL MOVE ACROSS THE COASTAL WATERS MONDAY...WITH
STRONG NORTHWESTERLY WINDS EXPECTED IN ITS WAKE...AND SMALL CRAFT
ADVISORIES MAY BE NEEDED. WINDS AND SEAS WILL SUBSIDE TUESDAY INTO
WEDNESDAY...WITH NORTHWEST FLOW REDEVELOPING AND STRENGTHENING
AGAIN LATE IN THE WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

24

In the hours before

Local storm report, Feb 22, 2:58 PM CST, 4 hours 23 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Feb 22, 6:43 PM CSTSpecial Marine WarningLCH62 min
Feb 22, 6:56 PM CSTSpecial Marine WarningLCH64 min

Nearby

Special Weather Statements in Louisiana, 2013Every special weather statement in 2013

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.