Alert archive / South Carolina / Mesoscale Discussions in 2004

Mesoscale Discussion 2182

September 7, 200421 counties in Georgia; 34 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Sep 7, 2004, 7:34 AM EDT for 21 counties in Georgia; 34 counties in South Carolina. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued
Sep 7, 2004, 7:34 AM EDT (11:34 UTC)
Expired
Sep 7, 2004, 9:30 AM EDT
In force
116 min
Issued by
the Storm Prediction Center
All 55 counties

Bryan County, GA, Bulloch County, GA, Burke County, GA, Candler County, GA, Chatham County, GA, Columbia County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Glascock County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Lincoln County, GA, McDuffie County, GA, Montgomery County, GA, Richmond County, GA, Screven County, GA, Tattnall County, GA, Toombs County, GA, Treutlen County, GA, Abbeville County, SC, Aiken County, SC, Allendale County, SC, Anderson County, SC, Bamberg County, SC, Barnwell County, SC, Beaufort County, SC, Berkeley County, SC, Calhoun County, SC, Charleston County, SC, Clarendon County, SC, Colleton County, SC, Darlington County, SC, Dillon County, SC, Dorchester County, SC, Edgefield County, SC, Fairfield County, SC, Florence County, SC, Georgetown County, SC, Greenwood County, SC, Hampton County, SC, Jasper County, SC, Kershaw County, SC, Laurens County, SC, Lee County, SC, Lexington County, SC, Marion County, SC, McCormick County, SC, Newberry County, SC, Orangeburg County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC, Williamsburg County, SC

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 11.6 hours before the alert went out and 121 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, Charleston AFB, SC at 00:00Z on 2004-09-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1460 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 00:00Z on 2004-09-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 205 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
1460 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
474 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
205 m²/s²
0-3 km storm-relative helicity
253 m²/s²
Significant tornado parameter
1.3
Supercell composite
6.5

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
Sep 7, 12:30 AM EDTMesoscale DiscussionSPCBrantley, Bryan, Bulloch, Camden, Chatham, Effingham and 7 more2 hr
Sep 7, 3:22 AM EDTMesoscale DiscussionSPCBrantley, Bryan, Bulloch, Camden, Charlton, Chatham and 8 more83 min
Sep 7, 4:00 AM EDTTornado WatchSPCBryan, Bulloch, Burke, Candler, Chatham, Columbia and 15 more10 hr
Sep 7, 5:30 AM EDTMesoscale DiscussionSPCFannin, Gilmer, Murray, Rabun, Towns, Union3 hr
Sep 7, 11:29 AM EDTMesoscale DiscussionSPCBryan, Bulloch, Burke, Candler, Columbia, Effingham and 28 more91 min
Sep 7, 11:55 AM EDTTornado WatchSPCBryan, Bulloch, Burke, Candler, Chatham, Columbia and 12 more7 hr
Sep 7, 3:19 PM EDTMesoscale DiscussionSPCAppling, Bryan, Bulloch, Burke, Candler, Chatham and 28 more116 min
Sep 7, 6:07 PM EDTMesoscale DiscussionSPCBryan, Bulloch, Burke, Columbia, Effingham, Jenkins and 4 more53 min
Sep 7, 6:40 PM EDTTornado WatchSPCBryan, Bulloch, Burke, Candler, Chatham, Columbia and 11 more6 hr
Sep 7, 1:45 PM EDTTornado WatchSPCHorry5 hr

Nearby

Mesoscale Discussions in South Carolina, 2004Mesoscale Discussions in Georgia, 2004Every mesoscale discussion in 2004

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.