Alert archive / South Carolina / Mesoscale Discussions in 2004
Mesoscale Discussion 1420
The Storm Prediction Center issued this mesoscale discussion at Jun 25, 2004, 4:43 PM EDT for Burke County, Columbia County, Richmond County, Georgia; Hoke County, Robeson County, Scotland County, North Carolina; 18 counties in South Carolina. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 25, 2004, 4:43 PM EDT (20:43 UTC)
- Expired
- Jun 25, 2004, 6:45 PM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 24 counties
Burke County, GA, Columbia County, GA, Richmond County, GA, Hoke County, NC, Robeson County, NC, Scotland County, NC, Aiken County, SC, Barnwell County, SC, Calhoun County, SC, Chesterfield County, SC, Clarendon County, SC, Darlington County, SC, Dillon County, SC, Edgefield County, SC, Fairfield County, SC, Florence County, SC, Kershaw County, SC, Lee County, SC, Lexington County, SC, Marlboro County, SC, Orangeburg County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC
The radar
The Columbia radar (KCAE), 18 km from the middle of the area, began a volume at 20:45 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 8.7 hours before the alert went out and 145 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.
- Mixed-layer CAPE
- 139 J/kg
- Mixed-layer CIN
- -151 J/kg
- Mixed-layer LCL
- 1396 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Jun 25, 5:35 PM EDT | Severe Thunderstorm Watch | SPC | Bryan, Bulloch, Burke, Candler, Chatham, Effingham and 7 more | 5 hr |
| Jun 25, 7:14 PM EDT | Mesoscale Discussion | SPC | Bryan, Chatham, Effingham, Liberty, McIntosh | 61 min |
| Jun 25, 12:34 PM EDT | Mesoscale Discussion | SPC | Bertie, Camden, Chowan, Currituck, Gates, Halifax and 5 more | 116 min |
Nearby
Mesoscale Discussions in South Carolina, 2004Mesoscale Discussions in Georgia, 2004Mesoscale Discussions in North Carolina, 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; radar from the NEXRAD Level II archive.