Alert archive / North Carolina / Mesoscale Discussions in 2014
Mesoscale Discussion 454
The Storm Prediction Center issued this mesoscale discussion at Apr 28, 2014, 2:15 PM EDT for 40 counties in North Carolina; 15 counties in South Carolina. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 28, 2014, 2:15 PM EDT (18:15 UTC)
- Expired
- Apr 28, 2014, 4:15 PM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 55 counties
Anson County, NC, Bladen County, NC, Brunswick County, NC, Cabarrus County, NC, Catawba County, NC, Chatham County, NC, Cleveland County, NC, Columbus County, NC, Craven County, NC, Cumberland County, NC, Davidson County, NC, Davie County, NC, Duplin County, NC, Gaston County, NC, Greene County, NC, Harnett County, NC, Hoke County, NC, Iredell County, NC, Johnston County, NC, Jones County, NC, Lee County, NC, Lenoir County, NC, Lincoln County, NC, Mecklenburg County, NC, Montgomery County, NC, Moore County, NC, New Hanover County, NC, Onslow County, NC, Pender County, NC, Randolph County, NC, Richmond County, NC, Robeson County, NC, Rowan County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Union County, NC, Wake County, NC, Wayne County, NC, Wilson County, NC, Berkeley County, SC, Charleston County, SC, Chesterfield County, SC, Clarendon County, SC, Darlington County, SC, Dillon County, SC, Dorchester County, SC, Florence County, SC, Georgetown County, SC, Horry County, SC, Lee County, SC, Marion County, SC, Marlboro County, SC, Williamsburg County, SC, York County, SC
The radar
The Wilmington radar (KLTX), 81 km from the middle of the area, began a volume at 18:19 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
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 6.3 hours before the alert went out and 201 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 864 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 206 m²/s²
- 0-3 km storm-relative helicity
- 153 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 |
|---|---|---|---|---|
| Apr 28, 4:12 PM EDT | Mesoscale Discussion | SPC | Ashe, Avery, Graham, Haywood, Madison, Mitchell and 3 more | 63 min |
| Apr 28, 6:37 PM EDT | Tornado Watch | SPC | Cherokee, Clay | 6 hr |
Nearby
Mesoscale Discussions in North Carolina, 2014Mesoscale Discussions in South Carolina, 2014Every mesoscale discussion in 2014
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.