Alert archive / Minnesota / Mesoscale Discussions in 2005

Mesoscale Discussion 1926

August 3, 20054 counties in Minnesota

The Storm Prediction Center issued this mesoscale discussion at Aug 3, 2005, 1:29 PM CDT for 4 counties in Minnesota. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Aug 3, 2005, 1:29 PM CDT (18:29 UTC)
Expired: Aug 3, 2005, 3:30 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

Counties Cook County, MN, Itasca County, MN, Lake County, MN, Saint Louis County, MN

The radar

The Duluth radar (KDLH), 105 km from the middle of the area, began a volume at 18:29 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

International Fa, MN (KINL), launched 12:00Z, 6.5 hours before the alert went out and 173 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: 911 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 864 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 54 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
Aug 3, 1:58 AM CDT	Mesoscale Discussion	SPC	Aitkin, Becker, Big Stone, Cass, Crow Wing, Douglas and 12 more	92 min
Aug 3, 3:16 PM CDT	Mesoscale Discussion	SPC	Houston	89 min
Aug 3, 5:45 PM CDT	Mesoscale Discussion	SPC	Lincoln, Pipestone	90 min

Nearby

Mesoscale Discussions in Minnesota, 2005 Every mesoscale discussion in 2005

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.