Alert archive / Louisiana / Mesoscale Discussions in 2006

Mesoscale Discussion 95

February 1, 200616 parishes in Louisiana; 6 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Feb 1, 2006, 6:48 PM CST for 16 parishes in Louisiana; 6 counties in Texas. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued: Feb 1, 2006, 6:48 PM CST (00:48 UTC)
Expired: Feb 1, 2006, 8:15 PM CST
In force: 87 min
Issued by: the Storm Prediction Center

All 22 counties

Acadia Parish, LA, Allen Parish, LA, Beauregard Parish, LA, Calcasieu Parish, LA, Cameron Parish, LA, Evangeline Parish, LA, Iberia Parish, LA, Iberville Parish, LA, Jefferson Davis Parish, LA, Lafayette Parish, LA, Pointe Coupee Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA, St. Mary Parish, LA, Vermilion Parish, LA, West Baton Rouge Parish, LA, Chambers County, TX, Galveston County, TX, Hardin County, TX, Jefferson County, TX, Liberty County, TX, Orange County, TX

The watches that followed

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

Tornado Watch 25Feb 1, 8:15 PM CST

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 0.8 hours before the alert went out and 30 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: 258 J/kg
Mixed-layer CIN: -101 J/kg
Mixed-layer LCL: 689 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 175 m²/s²
0-3 km storm-relative helicity: 239 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.4

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.

Issued	Product	Office	Counties	Lasted
Feb 1, 8:15 PM CST	Tornado Watch	SPC	Acadia, Allen, Ascension, Assumption, Beauregard, Calcasieu and 13 more	6 hr
Feb 1, 11:44 PM CST	Mesoscale Discussion	SPC	Acadia, Ascension, Assumption, East Baton Rouge, Iberia, Iberville and 13 more	91 min
Feb 2, 1:52 AM CST	Mesoscale Discussion	SPC	Orleans, Saint Bernard, Saint Tammany	83 min
Feb 2, 2:10 AM CST	Tornado Watch	SPC	Ascension, Jefferson, Lafourche, Livingston, Orleans, Plaquemines and 9 more	8 hr
Feb 2, 3:05 AM CST	Mesoscale Discussion	SPC	Bienville, Caldwell, Catahoula, East Carroll, Franklin, Grant and 16 more	85 min
Feb 2, 4:09 AM CST	Mesoscale Discussion	SPC	Jefferson, Lafourche, Orleans, Saint Bernard, Saint Charles, Saint John the Baptist and 3 more	96 min

Nearby

Mesoscale Discussions in Louisiana, 2006 Mesoscale Discussions in Texas, 2006 Every mesoscale discussion in 2006

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.