Alert archive / Louisiana / Mesoscale Discussions in 2003

Mesoscale Discussion 1368

June 13, 20039 parishes in Louisiana; 6 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 13, 2003, 12:16 PM CDT for 9 parishes in Louisiana; 6 counties in Texas. It was in force for 119 min.

The area

The outline as issued.

The facts

Issued
Jun 13, 2003, 12:16 PM CDT (17:16 UTC)
Expired
Jun 13, 2003, 2:15 PM CDT
In force
119 min
Issued by
the Storm Prediction Center

Counties Allen Parish, LA, Beauregard Parish, LA, Calcasieu Parish, LA, Grant Parish, LA, LaSalle Parish, LA, Natchitoches Parish, LA, Rapides Parish, LA, Sabine Parish, LA, Vernon Parish, LA, Hardin County, TX, Jasper County, TX, Newton County, TX, Orange County, TX, Sabine County, TX, Tyler County, TX

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 5.3 hours before the alert went out and 100 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 2003-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1830 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 2003-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 square meters per square second.193958Sfc1 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
1830 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
816 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
133 m²/s²
Significant tornado parameter
0.6
Supercell composite
5.3

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>

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 12, 8:00 PM CDTSevere Thunderstorm WatchSPCBeauregard, Calcasieu, Cameron, Vernon5 hr
Jun 12, 9:51 PM CDTMesoscale DiscussionSPCBeauregard, Calcasieu, Cameron, Vernon54 min
Jun 13, 3:20 PM CDTSevere Thunderstorm WatchSPCAcadia, Allen, Ascension, Avoyelles, Beauregard, Calcasieu and 21 more5 hr
Jun 13, 6:13 PM CDTMesoscale DiscussionSPCAcadia, Allen, Ascension, Avoyelles, Beauregard, Calcasieu and 21 more92 min
Jun 12, 7:13 PM CDTMesoscale DiscussionSPCArcher, Baylor, Bosque, Brown, Callahan, Childress and 29 more92 min
Jun 13, 12:02 AM CDTMesoscale DiscussionSPCArcher, Baylor, Clay, Collin, Cooke, Dallas and 20 more88 min
Jun 13, 1:10 AM CDTSevere Thunderstorm WatchSPCArcher, Armstrong, Baylor, Briscoe, Carson, Childress and 18 more5 hr
Jun 13, 5:11 AM CDTMesoscale DiscussionSPCArcher, Baylor, Clay, Cooke, Denton, Hardeman and 7 more64 min
Jun 13, 10:26 AM CDTMesoscale DiscussionSPCCoke, Concho, Crockett, Irion, McCulloch, Menard and 3 more94 min
Jun 13, 12:15 PM CDTSevere Thunderstorm WatchSPCAndrews, Borden, Brown, Burnet, Callahan, Coke and 31 more6 hr
Jun 13, 2:21 PM CDTMesoscale DiscussionSPCBastrop, Brazos, Burleson, Grimes, Hardin, Harris and 14 more54 min
Jun 13, 2:56 PM CDTMesoscale DiscussionSPCAndrews, Borden, Brown, Callahan, Coke, Coleman and 20 more2 hr
Jun 13, 3:00 PM CDTSevere Thunderstorm WatchSPCAustin, Bandera, Bastrop, Bexar, Blanco, Brazos and 40 more5 hr
Jun 13, 3:20 PM CDTMesoscale DiscussionSPCArmstrong, Briscoe, Carson, Castro, Childress, Collingsworth and 21 more85 min
Jun 13, 3:40 PM CDTSevere Thunderstorm WatchSPCArmstrong, Carson, Childress, Collingsworth, Dallam, Deaf Smith and 15 more5 hr
Jun 13, 4:54 PM CDTMesoscale DiscussionSPCAustin, Bandera, Bastrop, Bexar, Blanco, Brazos and 42 more96 min
Jun 13, 5:13 PM CDTMesoscale DiscussionSPCAndrews, Bailey, Cochran, Crane, Dawson, Ector and 11 more62 min
Jun 13, 5:40 PM CDTSevere Thunderstorm WatchSPCAndrews, Bailey, Borden, Castro, Cochran, Coke and 29 more5 hr
Jun 13, 6:55 PM CDTSevere Thunderstorm WatchSPCAransas, Atascosa, Bee, Calhoun, DeWitt, Duval and 15 more5 hr

Nearby

Mesoscale Discussions in Louisiana, 2003Mesoscale Discussions in Texas, 2003Every mesoscale discussion in 2003

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.