Alert archive / Tennessee / Mesoscale Discussions in 2003

Mesoscale Discussion 2010

July 28, 20034 states

The Storm Prediction Center issued this mesoscale discussion at Jul 28, 2003, 10:12 PM CDT for 4 states. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Jul 28, 2003, 10:12 PM CDT (03:12 UTC)
Expired: Jul 29, 2003, 1:15 AM CDT
In force: 3 hr
Issued by: the Storm Prediction Center

All 21 counties

Mississippi County, AR, Dunklin County, MO, Pemiscot County, MO, Alcorn County, MS, Benton County, MS, Marshall County, MS, Prentiss County, MS, Tippah County, MS, Tishomingo County, MS, Chester County, TN, Crockett County, TN, Fayette County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Lauderdale County, TN, Madison County, TN, McNairy County, TN, Shelby County, TN, Tipton County, TN, Wayne County, TN

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 3.2 hours before the alert went out and 74 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: 2121 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1620 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 95 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Jul 29, 10:42 AM CDT	Mesoscale Discussion	SPC	Chicot, Desha, Drew	2 hr
Jul 29, 3:36 PM CDT	Mesoscale Discussion	SPC	Clark, Columbia, Dallas, Garland, Grant, Hempstead and 13 more	2 hr
Jul 29, 5:38 PM CDT	Mesoscale Discussion	SPC	Mississippi	2 hr

Nearby

Mesoscale Discussions in Tennessee, 2003 Mesoscale Discussions in Mississippi, 2003 Mesoscale Discussions in Missouri, 2003 Every 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.