Alert archive / North Dakota / Mesoscale Discussions in 2004

Mesoscale Discussion 1128

June 6, 20049 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 6, 2004, 11:36 PM CDT for 9 counties in North Dakota. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued: Jun 6, 2004, 11:36 PM CDT (04:36 UTC)
Expired: Jun 7, 2004, 1:00 AM CDT
In force: 84 min
Issued by: the Storm Prediction Center

Counties Benson County, ND, Eddy County, ND, Grand Forks County, ND, McHenry County, ND, Nelson County, ND, Pierce County, ND, Ramsey County, ND, Towner County, ND, Walsh County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 135 km from the middle of the area, began a volume at 04:39 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

Bismarck Municip, ND (KBIS), launched 00:00Z, 4.6 hours before the alert went out and 196 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: 1945 J/kg
Mixed-layer CIN: -123 J/kg
Mixed-layer LCL: 1573 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 129 m²/s²
0-3 km storm-relative helicity: 217 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 9.1

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
Jun 6, 7:12 PM CDT	Mesoscale Discussion	SPC	Renville, Ward	93 min
Jun 6, 8:10 PM CDT	Mesoscale Discussion	SPC	Ward	65 min
Jun 6, 8:50 PM CDT	Severe Thunderstorm Watch	SPC	Barnes, Benson, Bottineau, Burleigh, Cass, Cavalier and 20 more	6 hr
Jun 6, 10:12 PM CDT	Mesoscale Discussion	SPC	Benson, Eddy	63 min
Jun 7, 1:33 AM CDT	Mesoscale Discussion	SPC	Benson, Bottineau, Cavalier, Eddy, Foster, Grand Forks and 14 more	87 min

Nearby

Mesoscale Discussions in North Dakota, 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.