Alert archive / Minnesota / Mesoscale Discussions in 2004

Mesoscale Discussion 1133

June 7, 200411 counties in Minnesota

The Storm Prediction Center issued this mesoscale discussion at Jun 7, 2004, 4:37 PM CDT for 11 counties in Minnesota. It was in force for 113 min.

The area

The outline as issued.

The facts

Issued: Jun 7, 2004, 4:37 PM CDT (21:37 UTC)
Expired: Jun 7, 2004, 6:30 PM CDT
In force: 113 min
Issued by: the Storm Prediction Center

Counties Aitkin County, MN, Carlton County, MN, Cass County, MN, Crow Wing County, MN, Itasca County, MN, Lake County, MN, Mille Lacs County, MN, Morrison County, MN, Pine County, MN, Saint Louis County, MN, Todd County, MN

The radar

The Duluth radar (KDLH), 85 km from the middle of the area, began a volume at 21:40 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 406Jun 7, 4:50 PM CDT

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 9.6 hours before the alert went out and 199 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: 502 m above ground
0-6 km bulk shear: 72 kt
0-1 km storm-relative helicity: 461 m²/s²
0-3 km storm-relative helicity: 648 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

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, 8:50 PM CDT	Severe Thunderstorm Watch	SPC	Kittson, Marshall, Norman, Polk	6 hr
Jun 7, 1:33 AM CDT	Mesoscale Discussion	SPC	Kittson, Marshall, Norman, Polk	87 min
Jun 7, 4:50 PM CDT	Tornado Watch	SPC	Aitkin, Benton, Carlton, Cass, Crow Wing, Isanti and 9 more	7 hr

Nearby

Mesoscale Discussions in Minnesota, 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.