Alert archive / Louisiana / Special Weather Statements in 2012

Special Weather Statement, NWS Lake Charles, LA

December 20, 20124 parishes in Louisiana; Jefferson County, Orange County, Texas

NWS Lake Charles, LA issued this special weather statement at Dec 20, 2012, 3:11 AM CST for 4 parishes in Louisiana; Jefferson County, Orange County, Texas. It was in force for 79 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: Dec 20, 2012, 3:11 AM CST (09:11 UTC)
Expired: Dec 20, 2012, 4:30 AM CST
In force: 79 min
Issued by: NWS Lake Charles, LA

Counties Allen Parish, LA, Beauregard Parish, LA, Calcasieu Parish, LA, Rapides Parish, LA, Jefferson County, TX, Orange County, TX

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 9.2 hours before the alert went out and 63 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: 386 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 540 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 243 m²/s²
0-3 km storm-relative helicity: 231 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 3.6

Open this sounding in Storm Lab

The text

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

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

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 Dec 19, 11:49 PM CST, 3 hours 22 minutes earlier.

Area forecast discussion, Dec 19, 11:49 PM CST, 3 hours 22 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Hazardous weather outlook, Dec 19, 3:58 AM CST, 23 hours 13 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAKE CHARLES LA
358 AM CST WED DEC 19 2012

LAZ027>033-041>045-052>055-073-074-TXZ180-201-215-216-259>262-
201000-
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-
358 AM CST WED DEC 19 2012

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

STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE LATE TONIGHT AS A COLD
FRONT MOVES THROUGH THE REGION. THE PRIMARY THREAT WILL BE
DAMAGING WINDS CAPABLE OF BLOWING A FEW TREES DOWN AND CAUSING
POWER OUTAGES.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

FREEZING TEMPERATURES ARE EXPECTED ALONG AND NORTH OF THE I-10
CORRIDOR FRIDAY AND SATURDAY MORNING. BY TUESDAY...ANOTHER COLD
FRONT WILL MOVE THROUGH THE AREA...WITH STRONG THUNDERSTORMS POSSIBLE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED...HOWEVER SPOTTERS ARE
ENCOURAGED TO CALL IN THEIR REPORT IF DAMAGING WINDS OCCUR LATE TONIGHT.

GMZ430-432-435-450-452-455-470-472-475-201000-
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-
358 AM CST WED DEC 19 2012

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

.DAY ONE...TODAY AND TONIGHT

A STRONG COLD FRONT MOVING THROUGH THE REGION TONIGHT WILL PRODUCE
SCATTERED TO NUMEROUS THUNDERSTORMS...SOME OF WHICH COULD BE
STRONG TO SEVERE. WINDS AND SEAS WILL BE INCREASING THROUGH THE NIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

BEHIND THE COLD FRONT ON THURSDAY...WINDS WILL BE FROM THE NORTH
AT 20 TO 25 KNOTS WITH HIGHER GUSTS. OFFSHORE...SEAS COULD REACH 6
TO 9 FEET. ALSO...DUE TO THE STRONG WINDS...TIDES WILL RUN 2 TO 3
FEET BELOW NORMAL ON THURSDAY...WHICH WILL CAUSE LOW WATER
PROBLEMS FOR THE SABINE-NECHES AND CALCASIEU SHIP CHANNELS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED.

In the hours before

Special weather statement, Dec 20, 1:17 AM CST, 1 hour 54 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Special weather statement, Dec 20, 2:18 AM CST, 53 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Special weather statement, Dec 20, 3:11 AM CST, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
311 AM CST THU DEC 20 2012

LAZ027>032-041-042-073-TXZ201-215-216-261-262-201030-
HARDIN TX-JEFFERSON TX-RAPIDES LA-EVANGELINE LA-BEAUREGARD LA-
ALLEN LA-VERNON LA-AVOYELLES LA-CALCASIEU LA-ORANGE TX-
JEFFERSON DAVIS LA-SOUTHERN JASPER TX-SOUTHERN NEWTON TX-
WEST CAMERON LA-
311 AM CST THU DEC 20 2012

...SIGNIFICANT WEATHER ADVISORY FOR HARDIN...JASPER...NEWTON...
JEFFERSON AND ORANGE COUNTIES...SIGNIFICANT WEATHER ADVISORY FOR
RAPIDES...EVANGELINE...BEAUREGARD...ALLEN...VERNON...AVOYELLES...
CALCASIEU...JEFFERSON DAVIS AND CAMERON PARISHES UNTIL 430 AM CST...

AT 308 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
LINE OF STRONG THUNDERSTORMS...ALONG A LINE EXTENDING FROM 31 MILES
NORTHEAST OF LENA TO FORT POLK TO DEWEYVILLE TO 31 MILES SOUTH OF
LIBERTY...MOVING EAST AT 40 MPH.

* THE LINE OF STRONG THUNDERSTORMS WILL BE NEAR...
  LENA...CLIFTON...FIELDS AND ROSE CITY BY 315 AM...
  SINGER...LACAMP...VIDOR AND MAURICEVILLE BY 320 AM...
  TULLA AND CRAVENS BY 325 AM...

THE PRIMARY THREAT FROM THESE STORMS IS WIND GUSTS 40 TO 50
MPH...WHICH COULD DOWN TREE LIMBS AND BLOW AROUND UNSECURED SMALL
OBJECTS. ALSO...POWER OUTAGES HAVE BEEN REPORTED WITH THESE STRONG
WINDS. SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL THESE STORMS
HAVE PASSED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 AM THURSDAY
MORNING FOR WEST CENTRAL LOUISIANA AND SOUTHEAST TEXAS.

LAT...LON 3140 9266 3147 9216 3138 9211 3101 9239
      3033 9305 2967 9396 2956 9435 2988 9436
      2988 9444 2993 9445 3033 9391 3102 9325
      3136 9299 3152 9273

RUA

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 20, 2:18 AM CST	Special Weather Statement	LCH	Vernon	72 min
Dec 20, 3:20 AM CST	Special Marine Warning	LCH		55 min
Dec 20, 3:35 AM CST	Special Marine Warning	LCH		85 min
Dec 20, 4:04 AM CST	Special Weather Statement	LCH	Acadia, Allen, Avoyelles, Cameron, Evangeline, Jefferson Davis	56 min
Dec 20, 4:35 AM CST	Special Marine Warning	LCH		85 min
Dec 20, 4:55 AM CST	Special Weather Statement	LCH	Acadia, Lafayette, Saint Landry, Vermilion	65 min
Dec 20, 5:37 AM CST	Special Marine Warning	LCH		83 min
Dec 20, 5:49 AM CST	Special Weather Statement	LCH	Saint Martin, St. Mary	71 min
Dec 20, 6:45 AM CST	Special Weather Statement	LCH	St. Mary	60 min
Dec 20, 6:50 AM CST	Special Marine Warning	LCH		55 min
Dec 20, 1:17 AM CST	Special Weather Statement	LCH	Tyler	58 min

Nearby

Special Weather Statements in Louisiana, 2012 Special Weather Statements in Texas, 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.