Alert archive / North Carolina / Mesoscale Discussions in 2004

Mesoscale Discussion 2532

December 10, 200437 counties in North Carolina; 8 counties in Virginia

The Storm Prediction Center issued this mesoscale discussion at Dec 10, 2004, 6:18 AM EST for 37 counties in North Carolina; 8 counties in Virginia. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued: Dec 10, 2004, 6:18 AM EST (11:18 UTC)
Expired: Dec 10, 2004, 8:15 AM EST
In force: 117 min
Issued by: the Storm Prediction Center

All 45 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, Edgecombe County, NC, Franklin County, NC, Gates County, NC, Greene County, NC, Halifax County, NC, Harnett County, NC, Hertford County, NC, Hoke County, NC, Hyde County, NC, Johnston County, NC, Jones County, NC, Lee County, NC, Lenoir County, NC, Martin County, NC, Nash County, NC, Northampton County, NC, Pamlico County, NC, Pasquotank County, NC, Perquimans County, NC, Pitt County, NC, Richmond County, NC, Sampson County, NC, Scotland County, NC, Tyrrell County, NC, Wake County, NC, Washington County, NC, Wayne County, NC, Wilson County, NC, City of Chesapeake, VA, City of Franklin, VA, City of Norfolk, VA, City of Portsmouth, VA, City of Suffolk, VA, City of Virginia Beach, VA, Isle of Wight County, VA, Southampton County, VA

The radar

The Morehead City radar (KMHX), 98 km from the middle of the area, began a volume at 11:20 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

Roanoke, VA (KRNK), launched 00:00Z, 11.3 hours before the alert went out and 287 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 441 m above ground
0-6 km bulk shear: 80 kt
0-1 km storm-relative helicity: 431 m²/s²
0-3 km storm-relative helicity: 469 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
Dec 10, 2:11 AM EST	Mesoscale Discussion	SPC	Beaufort, Bertie, Bladen, Brunswick, Chowan, Columbus and 21 more	64 min
Dec 10, 2:35 AM EST	Tornado Watch	SPC	Bladen, Brunswick, Columbus, Onslow, Pender, Robeson	6 hr
Dec 10, 3:20 AM EST	Tornado Watch	SPC	Beaufort, Bertie, Camden, Carteret, Chowan, Craven and 33 more	7 hr
Dec 10, 6:00 AM EST	Mesoscale Discussion	SPC	Bladen, Brunswick, Columbus, Onslow, Pender, Robeson	2 hr
Dec 10, 11:12 AM EST	Mesoscale Discussion	SPC	Alexander, Alleghany, Ashe, Avery, Buncombe, Burke and 22 more	33 min
Dec 10, 12:53 PM EST	Mesoscale Discussion	SPC	Cherokee, Clay, Graham, Swain	2 hr

Nearby

Mesoscale Discussions in North Carolina, 2004 Mesoscale Discussions in Virginia, 2004 Every 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.