Alert archive / South Carolina / Mesoscale Discussions in 2016
Mesoscale Discussion 1620
The Storm Prediction Center issued this mesoscale discussion at Sep 2, 2016, 12:55 PM EDT for 9 counties in Georgia; 4 counties in North Carolina; 22 counties in South Carolina. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 2, 2016, 12:55 PM EDT (16:55 UTC)
- Expired
- Sep 2, 2016, 3:00 PM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 35 counties
Bryan County, GA, Bulloch County, GA, Chatham County, GA, Effingham County, GA, Evans County, GA, Liberty County, GA, Long County, GA, McIntosh County, GA, Screven County, GA, Bladen County, NC, Brunswick County, NC, Columbus County, NC, Robeson County, NC, Allendale 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, Florence County, SC, Georgetown County, SC, Hampton County, SC, Horry County, SC, Jasper County, SC, Lee County, SC, Marion County, SC, Orangeburg County, SC, Sumter County, SC, Williamsburg County, SC
The radar
The Charleston,SC radar (KCLX), 102 km from the middle of the area, began a volume at 16:58 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
Jacksonville, FL (KJAX), launched 12:00Z, 4.9 hours before the alert went out and 322 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
- 635 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 589 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 623 m²/s²
- 0-3 km storm-relative helicity
- 630 m²/s²
- Significant tornado parameter
- 2.1
- Supercell composite
- 13.0
The text
As transmitted.
<!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 |
|---|---|---|---|---|
| Sep 1, 10:01 PM EDT | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Berrien, Brantley, Bryan and 22 more | 2 hr |
| Sep 1, 10:47 PM EDT | Tornado Watch | SPC | Appling, Atkinson, Bacon, Berrien, Brantley, Brooks and 31 more | 9 hr |
| Sep 2, 12:45 AM EDT | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Ben Hill, Berrien, Brantley and 41 more | 4 hr |
| Sep 2, 5:05 AM EDT | Mesoscale Discussion | SPC | Bryan, Bulloch, Chatham, Effingham, Liberty | 2 hr |
| Sep 2, 7:51 AM EDT | Tornado Watch | SPC | Bryan, Bulloch, Candler, Chatham, Effingham, Evans and 6 more | 8 hr |
| Sep 2, 3:29 PM EDT | Mesoscale Discussion | SPC | Brunswick, Carteret, Columbus, Craven, Dare, Hyde and 5 more | 3 hr |
| Sep 2, 3:45 PM EDT | Tornado Watch | SPC | Brunswick, Carteret, Columbus, Craven, Dare, Hyde and 5 more | 11 hr |
Nearby
Mesoscale Discussions in South Carolina, 2016Mesoscale Discussions in Georgia, 2016Mesoscale Discussions in North Carolina, 2016Every mesoscale discussion in 2016
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.