Alert archive / Louisiana / Special Weather Statements in 2012

Special Weather Statement, NWS Lake Charles, LA

July 28, 2012Vernon Parish, Louisiana

NWS Lake Charles, LA issued this special weather statement at Jul 28, 2012, 7:44 PM CDT for Vernon Parish, Louisiana. It was in force for 61 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: Jul 28, 2012, 7:44 PM CDT (00:44 UTC)
Expired: Jul 28, 2012, 8:45 PM CDT
In force: 61 min
Issued by: NWS Lake Charles, LA

County Vernon Parish, LA

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 0.7 hours before the alert went out and 136 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: 802 J/kg
Mixed-layer CIN: -150 J/kg
Mixed-layer LCL: 1147 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 96 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 11.1

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 Jul 28, 7:36 PM CDT, 8 minutes earlier.

Area forecast discussion, Jul 28, 7:36 PM CDT, 8 minutes before

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Hazardous weather outlook, Jul 28, 5:24 AM CDT, 14 hours 20 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAKE CHARLES LA
524 AM CDT SAT JUL 28 2012

GMZ430-432-435-450-452-455-470-472-475-LAZ027>033-041>045-052>055-
073-074-TXZ180-201-215-216-259>262-291030-
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-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-
524 AM CDT SAT JUL 28 2012

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

.DAY ONE...TODAY AND TONIGHT

SHOWERS AND THUNDERSTORMS ARE LIKELY THIS AFTERNOON ACROSS PARTS
OF CENTRAL AND SOUTH CENTRAL LOUISIANA...GENERALLY ALONG AND EAST
OF A LINE FROM ALEXANDRIA TO LAKE ARTHUR. THE RISK OF WIDESPREAD
SEVERE WEATHER IS LOW...THOUGH ISOLATED SEVERE THUNDERSTORMS ARE
POSSIBLE...WITH DAMAGING WINDS THE GREATEST HAZARD. DUE TO THE
HIGH ATMOSPHERIC MOISTURE CONTENT...THUNDERSTORMS WILL ALSO BE
CAPABLE OF VERY HIGH RAINFALL RATES...WHICH COULD PRODUCE
LOCALIZED FLOODING.

AWAY FROM SHOWER AND THUNDERSTORM ACTIVITY...AFTERNOON HEAT
INDICES ARE FORECAST TO REACH 100 TO 105 DEGREES. PERSONS ENGAGED
IN OUTDOOR ACTIVITIES ARE URGED TO TAKE REASONABLE PRECAUTIONS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

AFTERNOON HEAT INDICES ARE FORECAST TO REACH 100 TO 105 DEGREES
THE REST OF THIS WEEK...WITH THE HIGHEST VALUES EXPECTED ON
SUNDAY. PERSONS ENGAGED IN OUTDOOR ACTIVITIES ARE URGED TO TAKE
REASONABLE PRECAUTIONS.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTER ACTIVATION IS NOT EXPECTED TODAY OR TONIGHT.

13

In the hours before

Special weather statement, Jul 28, 6:41 PM CDT, 1 hour 3 minutes before

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Local storm report, Jul 28, 6:45 PM CDT, 59 minutes before

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Local storm report, Jul 28, 6:46 PM CDT, 58 minutes before

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Special weather statement, Jul 28, 6:48 PM CDT, 56 minutes before

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Local storm report, Jul 28, 6:49 PM CDT, 55 minutes before

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Special weather statement, Jul 28, 7:44 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.

Issued	Product	Office	Counties	Lasted
Jul 29, 4:29 AM CDT	Heat Advisory	LCH	Allen, Avoyelles, Beauregard, Cameron, Evangeline, Lafayette and 4 more	15 hr

Nearby

Special Weather Statements in Louisiana, 2012 Every special weather statement 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.