Alert archive / South Dakota / Mesoscale Discussions in 2014

Mesoscale Discussion 958

June 11, 201412 counties in Minnesota; 7 counties in North Dakota; 16 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 11, 2014, 3:36 PM CDT for 12 counties in Minnesota; 7 counties in North Dakota; 16 counties in South Dakota. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued: Jun 11, 2014, 3:36 PM CDT (20:36 UTC)
Expired: Jun 11, 2014, 5:00 PM CDT
In force: 84 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

All 35 counties

Big Stone County, MN, Chippewa County, MN, Douglas County, MN, Grant County, MN, Lac qui Parle County, MN, Pope County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Traverse County, MN, Wilkin County, MN, Yellow Medicine County, MN, Dickey County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Brookings County, SD, Brown County, SD, Clark County, SD, Codington County, SD, Day County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Hanson County, SD, Kingsbury County, SD, Lake County, SD, Marshall County, SD, McPherson County, SD, Miner County, SD, Roberts County, SD, Sanborn County, SD

The radar

The Aberdeen radar (KABR), 56 km from the middle of the area, began a volume at 20:38 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

Aberdeen, SD (KABR), launched 12:00Z, 8.6 hours before the alert went out and 56 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: 2 J/kg
Mixed-layer CIN: -107 J/kg
Mixed-layer LCL: 810 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 281 m²/s²
0-3 km storm-relative helicity: 490 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
Jun 10, 9:41 PM CDT	Mesoscale Discussion	SPC	Campbell, Corson, Dewey, Hughes, Jones, Lyman and 8 more	94 min

Nearby

Mesoscale Discussions in South Dakota, 2014 Mesoscale Discussions in Minnesota, 2014 Mesoscale Discussions in North Dakota, 2014 Every mesoscale discussion in 2014

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.