Alert archive / Wisconsin / Mesoscale Discussions in 2006

Mesoscale Discussion 1464

July 9, 20069 counties in Illinois; Allamakee County, Iowa; 14 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jul 9, 2006, 4:01 PM CDT for 9 counties in Illinois; Allamakee County, Iowa; 14 counties in Wisconsin. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued: Jul 9, 2006, 4:01 PM CDT (21:01 UTC)
Expired: Jul 9, 2006, 5:30 PM CDT
In force: 89 min
Issued by: the Storm Prediction Center

All 24 counties

Allamakee County, IA, Boone County, IL, Carroll County, IL, DeKalb County, IL, Jo Daviess County, IL, Kane County, IL, McHenry County, IL, Ogle County, IL, Stephenson County, IL, Winnebago County, IL, Columbia County, WI, Crawford County, WI, Dane County, WI, Dodge County, WI, Grant County, WI, Green County, WI, Iowa County, WI, Jefferson County, WI, Lafayette County, WI, Richland County, WI, Rock County, WI, Sauk County, WI, Vernon County, WI, Walworth County, WI

The radar

The Milwaukee radar (KMKX), 112 km from the middle of the area, began a volume at 21:03 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

Davenport, (KDVN), launched 12:00Z, 9.0 hours before the alert went out and 138 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: 1434 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 92 m²/s²
0-3 km storm-relative helicity: 104 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
Jul 9, 6:27 PM CDT	Mesoscale Discussion	SPC	Boone, Carroll, Jo Daviess, Lake, McHenry, Ogle and 2 more	63 min
Jul 9, 1:21 PM CDT	Mesoscale Discussion	SPC	Brown, Calumet, Columbia, Dane, Dodge, Door and 11 more	84 min
Jul 9, 1:49 PM CDT	Severe Thunderstorm Watch	SPC	Brown, Calumet, Dodge, Door, Fond du Lac, Green Lake and 12 more	6 hr

Nearby

Mesoscale Discussions in Wisconsin, 2006 Mesoscale Discussions in Illinois, 2006 Mesoscale Discussions in Iowa, 2006 Every mesoscale discussion in 2006

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.