Alert archive / North Carolina / Mesoscale Discussions in 2003

Mesoscale Discussion 1580

July 2, 200324 counties in North Carolina; 5 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Jul 2, 2003, 2:26 PM EDT for 24 counties in North Carolina; 5 counties in South Carolina. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jul 2, 2003, 2:26 PM EDT (18:26 UTC)
Expired
Jul 2, 2003, 4:30 PM EDT
In force
2 hr
Issued by
the Storm Prediction Center
All 29 counties

Anson County, NC, Bladen County, NC, Brunswick County, NC, Chatham County, NC, Columbus County, NC, Cumberland County, NC, Duplin County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Jones County, NC, Lee County, NC, Lenoir County, NC, Montgomery County, NC, Moore County, NC, New Hanover County, NC, Onslow County, NC, Pender County, NC, Richmond County, NC, Robeson County, NC, Sampson County, NC, Scotland County, NC, Wake County, NC, Wayne County, NC, Chesterfield County, SC, Darlington County, SC, Dillon County, SC, Florence County, SC, Marlboro County, SC

The radar

The Wilmington radar (KLTX), 107 km from the middle of the area, began a volume at 18:28 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 6.4 hours before the alert went out and 163 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-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 12:00Z on 2003-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2003-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 324 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
573 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
324 m²/s²
0-3 km storm-relative helicity
511 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.

IssuedProductOfficeCountiesLasted
Jul 2, 2:20 AM EDTTornado WatchSPCBladen, Brunswick, Columbus, Craven, Cumberland, Duplin and 10 more7 hr
Jul 2, 5:32 AM EDTMesoscale DiscussionSPCBladen, Brunswick, Columbus, Craven, Cumberland, Duplin and 10 more58 min
Jul 2, 7:52 AM EDTMesoscale DiscussionSPCBeaufort, Bertie, Bladen, Brunswick, Carteret, Chowan and 23 more53 min
Jul 2, 8:15 AM EDTTornado WatchSPCBeaufort, Bertie, Bladen, Brunswick, Chowan, Columbus and 18 more6 hr
Jul 2, 10:49 AM EDTMesoscale DiscussionSPCColumbus, Jones, Pender116 min
Jul 2, 2:55 PM EDTTornado WatchSPCBladen, Brunswick, Columbus, Craven, Cumberland, Duplin and 19 more5 hr
Jul 2, 6:22 PM EDTMesoscale DiscussionSPCAnson, Beaufort, Bladen, Brunswick, Carteret, Columbus and 27 more53 min
Jul 2, 7:50 PM EDTTornado WatchSPCBeaufort, Bertie, Bladen, Camden, Carteret, Chowan and 31 more5 hr
Jul 1, 8:12 PM EDTMesoscale DiscussionSPCAiken, Allendale, Bamberg, Barnwell, Beaufort, Berkeley and 12 more2 hr
Jul 1, 9:55 PM EDTTornado WatchSPCAiken, Allendale, Bamberg, Barnwell, Beaufort, Berkeley and 18 more6 hr
Jul 2, 12:25 AM EDTMesoscale DiscussionSPCAiken, Allendale, Bamberg, Barnwell, Beaufort, Berkeley and 20 more2 hr

Nearby

Mesoscale Discussions in North Carolina, 2003Mesoscale Discussions in South Carolina, 2003Every mesoscale discussion in 2003

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.