Alert archive / North Carolina / Mesoscale Discussions in 2013

Mesoscale Discussion 2049

November 26, 201314 counties in North Carolina; 5 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Nov 26, 2013, 9:16 PM EST for 14 counties in North Carolina; 5 counties in South Carolina. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued: Nov 26, 2013, 9:16 PM EST (02:16 UTC)
Expired: Nov 26, 2013, 10:45 PM EST
In force: 89 min
Issued by: the Storm Prediction Center

Counties Beaufort County, NC, Bladen County, NC, Brunswick County, NC, Carteret County, NC, Columbus County, NC, Craven County, NC, Dare County, NC, Duplin County, NC, Hyde County, NC, Jones County, NC, New Hanover County, NC, Onslow County, NC, Pamlico County, NC, Pender County, NC, Berkeley County, SC, Charleston County, SC, Georgetown County, SC, Horry County, SC, Williamsburg County, SC

The radar

The Wilmington radar (KLTX), 70 km from the middle of the area, began a volume at 02:19 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Tornado Watch 578Nov 26, 9:50 PM EST

The nearest sounding before it

Newport, NC (KMHX), launched 00:00Z, 2.3 hours before the alert went out and 97 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 36 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 536 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 366 m²/s²
0-3 km storm-relative helicity: 437 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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.

Issued	Product	Office	Counties	Lasted
Nov 26, 7:48 PM EST	Mesoscale Discussion	SPC	Brunswick, Columbus	87 min
Nov 26, 9:48 PM EST	Tornado Watch	SPC	Beaufort, Carteret, Craven, Dare, Duplin, Greene and 9 more	10 hr
Nov 26, 11:29 PM EST	Mesoscale Discussion	SPC	Beaufort, Brunswick, Carteret, Craven, Dare, Hyde and 7 more	91 min
Nov 27, 2:26 AM EST	Mesoscale Discussion	SPC	Carteret, Craven, Dare, Hyde, Jones, Onslow and 1 more	94 min
Nov 27, 8:07 AM EST	Mesoscale Discussion	SPC	Carteret, Dare, Hyde, Pamlico	83 min

Nearby

Mesoscale Discussions in North Carolina, 2013 Mesoscale Discussions in South Carolina, 2013 Every mesoscale discussion in 2013

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.