Alert archive / Louisiana / Special Weather Statements in 2013

Special Weather Statement, NWS Lake Charles, LA

March 31, 2013Iberia Parish, St. Mary Parish, Vermilion Parish, Louisiana

NWS Lake Charles, LA issued this special weather statement at Mar 31, 2013, 4:36 PM CDT for Iberia Parish, St. Mary Parish, Vermilion 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
Mar 31, 2013, 4:36 PM CDT (21:36 UTC)
Expired
Mar 31, 2013, 5:30 PM CDT
In force
54 min
Issued by
NWS Lake Charles, LA

Counties Iberia Parish, LA, St. Mary Parish, LA, Vermilion Parish, LA

The radar

The Lake Charles radar (KLCH), 131 km from the middle of the area, began a volume at 21:39 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 12:00Z, 9.6 hours before the alert went out and 130 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 2013-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 448 joules per kilogram.LCLLFCEL10008507005003002001001 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, Lake Charles Mun, LA at 12:00Z on 2013-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 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
448 J/kg
Mixed-layer CIN
-118 J/kg
Mixed-layer LCL
566 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
108 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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 Mar 31, 4:31 PM CDT, 5 minutes earlier.

Area forecast discussion, Mar 31, 4:31 PM CDT, 5 minutes before
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Hazardous weather outlook, Mar 31, 5:25 AM CDT, 11 hours 11 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAKE CHARLES LA
525 AM CDT SUN MAR 31 2013

LAZ027>033-041>045-052>055-073-074-TXZ180-201-215-216-259>262-
011030-
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-
525 AM CDT SUN MAR 31 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

AREAS OF DENSE FOG HAVE DEVELOPED ACROSS SOUTH CENTRAL LOUISIANA
THIS MORNING AND A DENSE FOG ADVISORY IS IN EFFECT THROUGH 10 AM.
OTHERWISE SHOWERS AND THUNDERSTORMS ARE FORECAST TO DEVELOP AND
MOVE SOUTH ACROSS THE AREA...MAINLY THIS AFTERNOON AND EVENING.
SOME OF THESE THUNDERSTORMS HAVE THE POTENTIAL TO BECOME SEVERE
WITH LARGE HAIL AND DAMAGING WINDS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

HEAVY RAINFALL IS POSSIBLE OVER THE AREA BEGINNING TUESDAY EVENING
AND CONTINUING INTO WEDNESDAY. DESPITE THE DRY WEATHER LATELY
THERE IS A SLIGHT RISK FOR FLOODING RAINS DURING THE MIDDLE OF
NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EARLY EVENING.

GMZ430-432-435-450-452-455-470-472-475-011030-
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-
525 AM CDT SUN MAR 31 2013

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

.DAY ONE...TODAY AND TONIGHT

PATCHY FOG WITH VISIBILITIES LESS THAN ONE MILE ARE CURRENTLY
OCCURRING NEAR THE SOUTH CENTRAL LOUISIANA COAST. THE FOG MAY
BECOME A LITTLE MORE WIDESPREAD TONIGHT AND MONDAY.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

In the hours before

Local storm report, Mar 31, 3:40 PM CDT, 56 minutes before
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Special weather statement, Mar 31, 3:46 PM CDT, 50 minutes before
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Local storm report, Mar 31, 3:57 PM CDT, 39 minutes before
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Local storm report, Mar 31, 4:14 PM CDT, 22 minutes before
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Special weather statement, Mar 31, 4:28 PM CDT, 8 minutes before
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Special weather statement, Mar 31, 4:36 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Mar 31, 4:12 AM CDTDense Fog AdvisoryLCHLafayette, Saint Martin5 hr
Mar 31, 7:44 AM CDTMarine Dense Fog AdvisoryLCH5 hr
Mar 31, 12:17 PM CDTSevere Thunderstorm WarningLCHRapides, Vernon58 min
Mar 31, 1:15 PM CDTSevere Thunderstorm WarningLCHAllen, Avoyelles, Beauregard, Evangeline, Rapides, Saint Landry and 1 more45 min
Mar 31, 1:44 PM CDTSpecial Weather StatementLCHBeauregard46 min
Mar 31, 1:59 PM CDTSpecial Weather StatementLCHAllen, Avoyelles, Evangeline61 min
Mar 31, 2:28 PM CDTSpecial Weather StatementLCHCalcasieu, Jefferson Davis62 min
Mar 31, 3:01 PM CDTSevere Thunderstorm WarningLCHAcadia, Allen, Jefferson Davis44 min
Mar 31, 3:20 PM CDTSpecial Weather StatementLCHCameron, Jefferson Davis55 min
Mar 31, 3:26 PM CDTSpecial Marine WarningLCH34 min
Mar 31, 3:38 PM CDTSpecial Marine WarningLCH37 min
Mar 31, 3:46 PM CDTSpecial Weather StatementLCHAcadia, Jefferson Davis, Lafayette, Saint Martin59 min
Mar 31, 3:54 PM CDTSpecial Marine WarningLCH66 min
Mar 31, 4:08 PM CDTSpecial Marine WarningLCH67 min
Mar 31, 12:38 PM CDTSpecial Weather StatementLCHJasper, Newton, Tyler67 min
Mar 31, 1:01 PM CDTSpecial Weather StatementLCHJasper, Newton, Tyler59 min
Mar 31, 2:41 PM CDTSevere Thunderstorm WarningLCHHardin64 min
Mar 31, 3:33 PM CDTSpecial Weather StatementLCHJefferson57 min
Mar 31, 4:28 PM CDTSpecial Weather StatementLCHJefferson62 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; radar from the NEXRAD Level II archive.