Alert archive / Louisiana / Special Weather Statements in 2011

Special Weather Statement, NWS Lake Charles, LA

March 30, 2011Lafayette Parish, Louisiana

NWS Lake Charles, LA issued this special weather statement at Mar 30, 2011, 5:16 AM CDT for Lafayette Parish, Louisiana. It was in force for 44 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 30, 2011, 5:16 AM CDT (10:16 UTC)
Expired: Mar 30, 2011, 6:00 AM CDT
In force: 44 min
Issued by: NWS Lake Charles, LA

County Lafayette Parish, LA

The radar

The Lake Charles radar (KLCH), 120 km from the middle of the area, began a volume at 10:15 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 119 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: 2534 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 648 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 187 m²/s²
Significant tornado parameter: 2.1
Supercell composite: 14.0

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 Mar 30, 4:47 AM CDT, 29 minutes earlier.

Area forecast discussion, Mar 30, 4:47 AM CDT, 29 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
447 AM CDT WED MAR 30 2011

.DISCUSSION...
EARLY MORNING SFC ANALYSIS SHOWS THE COLD FRONT EXTENDING FROM
NERN MS TO SERN LA TO THE LOWER TX COAST. WATER VAPOR IMAGERY
SHOWS A STRONG SHORTWAVE TROF CROSSING THE LONE STAR STATE WHICH
HAS HELPED PRODUCE ANOTHER ROUND OF WIDESPREAD SHOWERS AND
ELEVATED THUNDERSTORMS ACROSS THE FORECAST AREA OVER THE PAST HOUR
OR TWO. AS THE COLD POOL ALOFT INCHES CLOSER TO THE FORECAST
AREA...EXPECT SOME OF THESE STORMS TO PRODUCE LARGE HAIL AS THEY
PUSH EWD. SEVERE THUNDERSTORM WATCH WHICH WAS IN EFFECT UNTIL
09Z/04CDT HAS EXPIRED WITH THE FRONTAL PASSAGE ACROSS THE
AREA...BUT AS THE RADAR IS SHOWING STRONG TO SEVERE STORMS ARE
STILL POSSIBLE OVER THE NEXT FEW HOURS UNTIL THE DRIER AIR ALOFT
BUILDS OVER THE FORECAST AREA AND SHUTS OFF THE BULK OF THE
PRECIPITATION LATER THIS MORNING.

WILL ISSUE UPDATED AFD AS WEATHER/TIME PERMITS LATER TO ADDRESS
REMAINDER OF THIS FORECAST PACKAGE.

&&

.MARINE...
SCA HAS BEEN ISSUED FOR THE OFFSHORE WATERS WEST OF INTRACOASTAL
CITY AS WINDS ARE FORECAST TO INCREASE TO 20 KNOTS WITH FROPA.
STRONG OFFSHORE FLOW WILL BE SHORT-LIVED AS CONDITIONS SHOULD
IMPROVE BY NOON AS THE FRONT AND ITS ASSOCIATED SFC LOW MOVE
FARTHER EAST AWAY FROM THE AREA.

&&

.PRELIMINARY POINT TEMPS/POPS...
KLCH  68  49  73  52  78 /  30  20  10  10  10
KBPT  67  49  73  57  78 /  30  20  10  10  10
KAEX  66  46  71  50  80 /  20  20  10  10  10
KLFT  70  49  72  54  77 /  40  20  10  10  10

&&

.LCH WATCHES/WARNINGS/ADVISORIES...
LA...NONE.
TX...NONE.
GM...SMALL CRAFT ADVISORY UNTIL NOON CDT TODAY FOR THE FOLLOWING
     ZONES: WATERS FROM CAMERON, LA TO HIGH ISLAND, TX EXTENDING
     FROM 20 NM TO 60 NM...WATERS FROM INTRACOASTAL CITY, LA TO
     CAMERON, LA EXTENDING FROM 20 NM TO 60 NM.

     SMALL CRAFT EXERCISE CAUTION FROM NOON TODAY TO 3 PM CDT THIS
     AFTERNOON FOR THE FOLLOWING ZONES: COASTAL WATERS FROM
     CAMERON, LA TO HIGH ISLAND, TX OUT 20 NM...COASTAL WATERS
     FROM INTRACOASTAL CITY TO CAMERON, LA OUT 20 NM...WATERS
     FROM CAMERON, LA TO HIGH ISLAND, TX EXTENDING FROM 20 NM TO
     60 NM...WATERS FROM INTRACOASTAL CITY, LA TO CAMERON, LA
     EXTENDING FROM 20 NM TO 60 NM.

&&

25

In the hours before

Special weather statement, Mar 30, 4:43 AM CDT, 33 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
443 AM CDT WED MAR 30 2011

LAZ033-044-045-052-053-301030-
ST. LANDRY LA-UPPER ST. MARTIN LA-LAFAYETTE LA-VERMILION LA-IBERIA LA-
443 AM CDT WED MAR 30 2011

...SIGNIFICANT WEATHER ADVISORY FOR ST. LANDRY...LAFAYETTE...
VERMILION...IBERIA AND ST. MARTIN PARISHES UNTIL 530 AM CDT...

AT 440 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 4 MILES WEST OF YOUNGSVILLE...MOVING NORTHEAST AT
40 MPH.

* THE STRONG THUNDERSTORM WILL BE NEAR...
  BROUSSARD...CADE AND LAFAYETTE BY 450 AM...
  ST. MARTINVILLE AND BREAUX BRIDGE BY 500 AM...
  HENDERSON BY 510 AM...
  CATAHOULA BY 515 AM...
  BUTTE LA ROSE AND LAKE PELBA BY 520 AM...
  WHISKEY BAY BY 525 AM...

THE PRIMARY THREATS FROM THIS STORM ARE PEA TO NICKEL SIZE HAIL 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 2999 9207 3015 9217 3042 9167 3038 9163
      3032 9161 3028 9158 3026 9155 3026 9149
      3024 9147 3023 9147

Special weather statement, Mar 30, 4:51 AM CDT, 25 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
451 AM CDT WED MAR 30 2011

LAZ029-031>033-301030-
AVOYELLES LA-EVANGELINE LA-ALLEN LA-ST. LANDRY LA-
451 AM CDT WED MAR 30 2011

...SIGNIFICANT WEATHER ADVISORY FOR AVOYELLES...EVANGELINE...ALLEN
AND ST. LANDRY PARISHES UNTIL 530 AM CDT...

AT 446 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 4 MILES NORTHWEST OF OBERLIN...MOVING EAST AT 45
MPH.

* THE STRONG THUNDERSTORM WILL BE NEAR...
  OAKDALE BY 500 AM...
  BOND AND BEAVER BY 505 AM...
  REDDELL...MAMOU AND PINE PRAIRIE BY 520 AM...
  BAYOU CHICOT BY 525 AM...
  VILLE PLATTE BY 530 AM...

THE PRIMARY THREATS FROM THIS STORM ARE PEA TO NICKEL SIZE HAIL 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 3089 9218 3058 9205 3056 9286 3081 9290

Special weather statement, Mar 30, 4:55 AM CDT, 21 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
455 AM CDT WED MAR 30 2011

LAZ054-055-301045-
LOWER ST. MARTIN LA-ST. MARY LA-
455 AM CDT WED MAR 30 2011

...SIGNIFICANT WEATHER ADVISORY FOR ST. MARY AND ST. MARTIN PARISHES
UNTIL 545 AM CDT...

AT 452 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 8 MILES SOUTHWEST OF BELLE RIVER...MOVING EAST AT
30 MPH.

* THE STRONG THUNDERSTORM WILL BE NEAR...
  BELLE RIVER BY 505 AM...
  STEPHENSVILLE BY 510 AM...
  BAYOU GENEVE BY 515 AM...

THE PRIMARY THREATS FROM THIS STORM ARE PEA TO NICKEL SIZE HAIL AND
WIND GUSTS TO NEAR 45 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 2971 9137 2988 9142 2994 9122 2990 9119
      2986 9118 2984 9112 2982 9108 2976 9108

Local storm report, Mar 30, 5:12 AM CDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
512 AM CDT WED MAR 30 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0511 AM     HAIL             5 S LAKE CHARLES        30.14N 93.20W
03/30/2011  E1.50 INCH       CALCASIEU          LA   NWS EMPLOYEE

&&

JBRAZZEL

Local storm report, Mar 30, 5:15 AM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
515 AM CDT WED MAR 30 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0505 AM     HAIL             CARLYSS                 30.18N 93.37W
03/30/2011  E0.88 INCH       CALCASIEU          LA   PUBLIC

&&

JBRAZZEL

Special weather statement, Mar 30, 5:16 AM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
516 AM CDT WED MAR 30 2011

LAZ033-043>045-052-301100-
ST. LANDRY LA-UPPER ST. MARTIN LA-LAFAYETTE LA-VERMILION LA-ACADIA LA-
516 AM CDT WED MAR 30 2011

...SIGNIFICANT WEATHER ADVISORY FOR ST. LANDRY...LAFAYETTE...
VERMILION...ACADIA AND ST. MARTIN PARISHES UNTIL 600 AM CDT...

AT 515 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 3 MILES EAST OF DUSON...MOVING NORTHEAST AT 40
MPH.

* THE STRONG THUNDERSTORM WILL BE NEAR...
  CANKTON BY 525 AM...
  CARENCRO BY 530 AM...
  GRAND COTEAU AND SUNSET BY 535 AM...
  ARNAUDVILLE AND LEONVILLE BY 545 AM...

THE PRIMARY THREATS FROM THIS STORM ARE PEA TO NICKEL SIZE HAIL AND
WIND GUSTS TO NEAR 45 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 3012 9214 3025 9229 3053 9199 3050 9169
      3048 9166

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 29, 9:05 PM CDT	Special Weather Statement	LCH	Beauregard	55 min
Mar 29, 9:09 PM CDT	Severe Thunderstorm Warning	LCH	Calcasieu, Cameron	66 min
Mar 29, 9:42 PM CDT	Severe Thunderstorm Warning	LCH	Allen, Beauregard, Calcasieu, Jefferson Davis	63 min
Mar 29, 9:47 PM CDT	Severe Thunderstorm Warning	LCH	Acadia, Cameron, Jefferson Davis, Vermilion	43 min
Mar 29, 9:51 PM CDT	Special Weather Statement	LCH	Vermilion	39 min
Mar 29, 9:53 PM CDT	Special Marine Warning	LCH		52 min
Mar 29, 10:11 PM CDT	Severe Thunderstorm Warning	LCH	Acadia, Saint Landry	49 min
Mar 29, 10:16 PM CDT	Severe Thunderstorm Warning	LCH	Calcasieu, Cameron, Jefferson Davis	44 min
Mar 29, 10:18 PM CDT	Special Weather Statement	LCH	St. Mary	42 min
Mar 29, 10:24 PM CDT	Areal Flood Advisory	LCH	Calcasieu	81 min
Mar 29, 10:59 PM CDT	Severe Thunderstorm Warning	LCH	Calcasieu	46 min
Mar 29, 11:03 PM CDT	Severe Thunderstorm Warning	LCH	Acadia, Evangeline, Jefferson Davis, Saint Landry	24 min
Mar 29, 11:20 PM CDT	Severe Thunderstorm Warning	LCH	Avoyelles, Evangeline, Saint Landry	40 min
Mar 30, 12:01 AM CDT	Special Weather Statement	LCH	Calcasieu	44 min
Mar 30, 12:34 AM CDT	Severe Thunderstorm Warning	LCH	Allen, Beauregard, Calcasieu, Jefferson Davis	29 min
Mar 30, 2:45 AM CDT	Special Marine Warning	LCH		60 min
Mar 30, 3:09 AM CDT	Special Weather Statement	LCH	Avoyelles	51 min
Mar 30, 3:15 AM CDT	Special Marine Warning	LCH		60 min
Mar 30, 3:40 AM CDT	Special Weather Statement	LCH	Beauregard	50 min
Mar 30, 3:43 AM CDT	Special Marine Warning	LCH		62 min
Mar 30, 3:51 AM CDT	Special Marine Warning	LCH		39 min
Mar 30, 4:25 AM CDT	Small Craft Advisory	LCH		8 hr
Mar 30, 4:30 AM CDT	Severe Thunderstorm Warning	LCH	Allen, Beauregard	23 min
Mar 30, 4:34 AM CDT	Special Marine Warning	LCH		56 min
Mar 30, 4:38 AM CDT	Severe Thunderstorm Warning	LCH	Calcasieu, Cameron	52 min
Mar 30, 4:43 AM CDT	Special Weather Statement	LCH	Lafayette	47 min
Mar 30, 4:46 AM CDT	Special Marine Warning	LCH		59 min
Mar 30, 4:51 AM CDT	Special Weather Statement	LCH	Allen, Evangeline	39 min
Mar 30, 4:55 AM CDT	Special Weather Statement	LCH	Assumption	50 min
Mar 30, 5:09 AM CDT	Severe Thunderstorm Warning	LCH	Calcasieu, Cameron, Jefferson Davis	37 min
Mar 30, 5:27 AM CDT	Severe Thunderstorm Warning	LCH	Lafayette, Saint Landry, Saint Martin	31 min
Mar 30, 5:34 AM CDT	Special Marine Warning	LCH		56 min
Mar 30, 5:37 AM CDT	Severe Thunderstorm Warning	LCH	Saint Landry	22 min
Mar 30, 5:44 AM CDT	Special Weather Statement	LCH	Vermilion	46 min
Mar 30, 6:01 AM CDT	Severe Thunderstorm Warning	LCH	Acadia, Iberia, Lafayette, Saint Martin, Vermilion	30 min
Mar 30, 6:31 AM CDT	Special Weather Statement	LCH	Lafayette, Saint Martin	44 min
Mar 29, 9:36 PM CDT	Special Weather Statement	LCH	Jefferson	54 min
Mar 29, 10:12 PM CDT	Severe Thunderstorm Warning	LCH	Jefferson, Orange	48 min
Mar 30, 2:28 AM CDT	Special Weather Statement	LCH	Jasper, Newton	47 min
Mar 30, 3:30 AM CDT	Special Weather Statement	LCH	Hardin	45 min
Mar 30, 3:36 AM CDT	Severe Thunderstorm Warning	LCH	Hardin, Jasper, Jefferson, Orange	39 min
Mar 30, 4:08 AM CDT	Special Weather Statement	LCH	Orange	52 min

Nearby

Special Weather Statements in Louisiana, 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.