Alert archive / Louisiana / Special Weather Statements in 2021

Special Weather Statement, NWS Lake Charles, LA

November 11, 2021Vernon Parish, Louisiana; Tyler County, Texas

NWS Lake Charles, LA issued this special weather statement at Nov 11, 2021, 3:33 AM CST for Vernon Parish, Louisiana; Tyler County, Texas. It was in force for 57 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: Nov 11, 2021, 3:33 AM CST (09:33 UTC)
Expired: Nov 11, 2021, 4:30 AM CST
In force: 57 min
Issued by: NWS Lake Charles, LA
Hail: 0.00 in
Wind: 40

Counties Vernon Parish, LA, Tyler County, TX

The radar

The Ft Polk radar (KPOE), 45 km from the middle of the area, began a volume at 09:37 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, 9.6 hours before the alert went out and 123 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: 136 J/kg
Mixed-layer CIN: -144 J/kg
Mixed-layer LCL: 871 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 144 m²/s²
0-3 km storm-relative helicity: 106 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

<!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 Nov 10, 11:17 PM CST, 4 hours 16 minutes earlier.

Area forecast discussion, Nov 10, 11:17 PM CST, 4 hours 16 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, Nov 10, 3:18 PM CST, 12 hours 15 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>

In the hours before

Special weather statement, Nov 11, 3:33 AM CST, 0 minutes before

Special Weather Statement
National Weather Service Lake Charles LA
333 AM CST Thu Nov 11 2021

LAZ027-028-TXZ180-259-260-111030-
Vernon LA-Rapides LA-Northern Newton TX-Northern Jasper TX-Tyler TX-
333 AM CST Thu Nov 11 2021

...Strong thunderstorms will impact portions of western Rapides and
Vernon Parishes, Tyler, northern Newton and northern Jasper Counties
through 430 AM CST...

At 331 AM CST, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles northeast of Natchitoches to near
Hornbeck to near Pineland to 11 miles southeast of Huntington.
Movement was south at 15 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Jasper, Leesville, Woodville, Newton, Rosepine, Boyce, Anacoco,
Colmesneil, Chester, Fort Polk, Rockland, Town Bluff, Slagle, Toledo
Bend Dam, Ebenezer, Hineston, Lena, Burkeville, New Llano and
Hornbeck.

This includes Interstate 49 between mile markers 99 and 109.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with the stronger storms and
may lead to some localized flooding. Do not drive your vehicle
through flooded roadways.

Cloud to ground lightning is occurring with these storms. Lightning
can strike 10 miles away from a thunderstorm. Seek a safe shelter
inside a building or vehicle.

&&

LAT...LON 3149 9270 3140 9269 3139 9265 3102 9263
      3088 9354 3063 9456 3099 9465 3106 9455
      3103 9447 3116 9390 3117 9358 3128 9352
      3128 9343 3136 9338 3135 9295 3152 9272
TIME...MOT...LOC 0931Z 352DEG 14KT 3177 9299 3135 9343 3123 9403 3119
9441

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

K. Kuyper

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 11, 4:40 AM CST	Special Weather Statement	LCH	Avoyelles, Beauregard, Rapides, Vernon	65 min
Nov 11, 5:31 AM CST	Special Weather Statement	LCH	Allen, Avoyelles, Beauregard, Calcasieu, Evangeline, Rapides	59 min
Nov 11, 6:32 AM CST	Special Weather Statement	LCH	Acadia, Allen, Beauregard, Calcasieu, Cameron, Evangeline and 3 more	58 min
Nov 11, 6:38 AM CST	Special Marine Warning	LCH		52 min
Nov 11, 7:31 AM CST	Special Marine Warning	LCH		44 min
Nov 11, 7:05 AM CST	Severe Thunderstorm Warning	LCH	Hardin, Jefferson	40 min

Nearby

Special Weather Statements in Louisiana, 2021 Special Weather Statements in Texas, 2021 Every special weather statement in 2021

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.