Alert archive / North Carolina / Mesoscale Discussions in 2004
Mesoscale Discussion 1399
The Storm Prediction Center issued this mesoscale discussion at Jun 23, 2004, 6:30 PM EDT for 33 counties in North Carolina; Marlboro County, South Carolina; City of Chesapeake, Virginia. It was in force for 90 min.
The area
The outline as issued.
The facts
- Issued
- Jun 23, 2004, 6:30 PM EDT (22:30 UTC)
- Expired
- Jun 23, 2004, 8:00 PM EDT
- In force
- 90 min
- Issued by
- the Storm Prediction Center
All 35 counties
Beaufort County, NC, Bertie County, NC, Camden County, NC, Chowan County, NC, Craven County, NC, Cumberland County, NC, Currituck County, NC, Dare County, NC, Duplin County, NC, Gates County, NC, Greene County, NC, Harnett County, NC, Hoke County, NC, Hyde County, NC, Johnston County, NC, Jones County, NC, Lee County, NC, Lenoir County, NC, Martin County, NC, Montgomery County, NC, Moore County, NC, Pamlico County, NC, Pasquotank County, NC, Perquimans County, NC, Pitt County, NC, Richmond County, NC, Robeson County, NC, Sampson County, NC, Scotland County, NC, Tyrrell County, NC, Washington County, NC, Wayne County, NC, Wilson County, NC, Marlboro County, SC, City of Chesapeake, VA
The radar
The Raleigh/Durham radar (KRAX), 58 km from the middle of the area, began a volume at 22:31 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 nearest sounding before it
Newport, NC (KMHX), launched 12:00Z, 10.5 hours before the alert went out and 123 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
- 405 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 1047 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 29 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 23, 12:55 PM EDT | Mesoscale Discussion | SPC | Alamance, Anson, Beaufort, Bertie, Bladen, Brunswick and 57 more | 2 hr |
| Jun 23, 2:20 PM EDT | Severe Thunderstorm Watch | SPC | Alamance, Bertie, Camden, Caswell, Chatham, Chowan and 20 more | 7 hr |
| Jun 23, 4:03 PM EDT | Mesoscale Discussion | SPC | Alamance, Anson, Beaufort, Bertie, Bladen, Camden and 51 more | 87 min |
| Jun 23, 4:25 PM EDT | Severe Thunderstorm Watch | SPC | Anson, Beaufort, Carteret, Craven, Cumberland, Dare and 19 more | 5 hr |
| Jun 23, 5:12 PM EDT | Mesoscale Discussion | SPC | Beaufort, Jasper | 93 min |
Nearby
Mesoscale Discussions in North Carolina, 2004Mesoscale Discussions in South Carolina, 2004Mesoscale Discussions in Virginia, 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.