Alert archive / Wisconsin / Mesoscale Discussions in 2008

Mesoscale Discussion 1397

June 15, 200811 counties in Illinois; 25 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jun 15, 2008, 1:08 PM CDT for 11 counties in Illinois; 25 counties in Wisconsin. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued: Jun 15, 2008, 1:08 PM CDT (18:08 UTC)
Expired: Jun 15, 2008, 2:45 PM CDT
In force: 97 min
Issued by: the Storm Prediction Center

All 36 counties

Boone County, IL, Carroll County, IL, DeKalb County, IL, DuPage County, IL, Jo Daviess County, IL, Kane County, IL, Lee County, IL, McHenry County, IL, Ogle County, IL, Stephenson County, IL, Winnebago County, IL, Adams County, WI, Calumet County, WI, Columbia County, WI, Crawford County, WI, Dane County, WI, Dodge County, WI, Fond du Lac County, WI, Grant County, WI, Green County, WI, Green Lake County, WI, Iowa County, WI, Jefferson County, WI, Juneau County, WI, Kenosha County, WI, Lafayette County, WI, Marquette County, WI, Ozaukee County, WI, Richland County, WI, Rock County, WI, Sauk County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI, Waushara County, WI, Winnebago County, WI

The radar

The Milwaukee radar (KMKX), 69 km from the middle of the area, began a volume at 18:09 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 6.1 hours before the alert went out and 155 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: 62 J/kg
Mixed-layer CIN: -212 J/kg
Mixed-layer LCL: 1665 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 162 m²/s²
0-3 km storm-relative helicity: 198 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 15, 2:01 AM CDT	Severe Thunderstorm Watch	SPC	Jo Daviess, Rock Island	5 hr
Jun 15, 3:35 AM CDT	Mesoscale Discussion	SPC	Carroll, Jo Daviess	55 min
Jun 15, 5:10 AM CDT	Severe Thunderstorm Watch	SPC	Boone, Bureau, Carroll, Champaign, Coles, Cook and 39 more	5 hr
Jun 15, 11:17 AM CDT	Mesoscale Discussion	SPC	Adams, Hancock, Pike	88 min
Jun 15, 11:42 AM CDT	Severe Thunderstorm Watch	SPC	Adams, Bond, Brown, Bureau, Calhoun, Cass and 67 more	7 hr
Jun 15, 5:00 PM CDT	Mesoscale Discussion	SPC	Clark, Clay, Coles, Crawford, Cumberland, Douglas and 8 more	90 min
Jun 14, 9:48 PM CDT	Mesoscale Discussion	SPC	Barron, Bayfield, Buffalo, Burnett, Chippewa, Douglas and 11 more	87 min
Jun 14, 11:36 PM CDT	Mesoscale Discussion	SPC	Barron, Bayfield, Burnett, Chippewa, Douglas, Dunn and 6 more	54 min
Jun 15, 5:56 PM CDT	Mesoscale Discussion	SPC	Florence, Forest, Iron, Langlade, Lincoln, Marathon and 11 more	2 hr

Nearby

Mesoscale Discussions in Wisconsin, 2008 Mesoscale Discussions in Illinois, 2008 Every mesoscale discussion in 2008

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.