Alert archive / Minnesota / Mesoscale Discussions in 2005

Mesoscale Discussion 2184

September 13, 20054 counties in Iowa; 10 counties in Minnesota; 6 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Sep 13, 2005, 1:19 AM CDT for 4 counties in Iowa; 10 counties in Minnesota; 6 counties in Wisconsin. It was in force for 56 min.

The area

The outline as issued.

The facts

Issued: Sep 13, 2005, 1:19 AM CDT (06:19 UTC)
Expired: Sep 13, 2005, 2:15 AM CDT
In force: 56 min
Issued by: the Storm Prediction Center

Counties Howard County, IA, Mitchell County, IA, Winneshiek County, IA, Worth County, IA, Dodge County, MN, Fillmore County, MN, Freeborn County, MN, Goodhue County, MN, Houston County, MN, Mower County, MN, Olmsted County, MN, Steele County, MN, Wabasha County, MN, Winona County, MN, Buffalo County, WI, Jackson County, WI, La Crosse County, WI, Monroe County, WI, Trempealeau County, WI, Vernon County, WI

The radar

The La Crosse radar (KARX), 60 km from the middle of the area, began a volume at 06:22 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

Minneapolis, MN (KMPX), launched 00:00Z, 6.3 hours before the alert went out and 167 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: 968 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 851 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 94 m²/s²
0-3 km storm-relative helicity: 161 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 3.7

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
Sep 12, 7:45 PM CDT	Tornado Watch	SPC	Dickinson, Lyon, Osceola	6 hr
Sep 12, 9:36 PM CDT	Mesoscale Discussion	SPC	Dickinson, Emmet, Lyon, O'Brien, Osceola, Sioux and 1 more	84 min
Sep 13, 11:19 AM CDT	Mesoscale Discussion	SPC	Adair, Allamakee, Audubon, Benton, Black Hawk, Boone and 48 more	116 min
Sep 13, 11:55 AM CDT	Severe Thunderstorm Watch	SPC	Adair, Adams, Allamakee, Appanoose, Benton, Black Hawk and 51 more	5 hr
Sep 13, 3:25 PM CDT	Mesoscale Discussion	SPC	Allamakee, Bremer, Buchanan, Butler, Chickasaw, Clayton and 8 more	95 min
Sep 13, 1:55 PM CDT	Mesoscale Discussion	SPC	Fillmore, Houston, Winona	2 hr
Sep 13, 2:20 PM CDT	Severe Thunderstorm Watch	SPC	Fillmore, Houston, Winona	4 hr
Sep 13, 12:34 AM CDT	Mesoscale Discussion	SPC	Chippewa, Florence, Forest, Iron, Langlade, Lincoln and 10 more	26 min
Sep 13, 5:15 PM CDT	Severe Thunderstorm Watch	SPC	Brown, Calumet, Dodge, Fond du Lac, Green Lake, Jefferson and 13 more	2 hr

Nearby

Mesoscale Discussions in Minnesota, 2005 Mesoscale Discussions in Wisconsin, 2005 Mesoscale Discussions in Iowa, 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.