Alert archive / Minnesota / Mesoscale Discussions in 2003

Mesoscale Discussion 1661

July 6, 200320 counties in Minnesota; 7 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jul 6, 2003, 6:54 PM CDT for 20 counties in Minnesota; 7 counties in Wisconsin. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Jul 6, 2003, 6:54 PM CDT (23:54 UTC)
Expired
Jul 6, 2003, 11:00 PM CDT
In force
4 hr
Issued by
the Storm Prediction Center
All 27 counties

Anoka County, MN, Benton County, MN, Carlton County, MN, Chisago County, MN, Cook County, MN, Douglas County, MN, Grant County, MN, Isanti County, MN, Kanabec County, MN, Kandiyohi County, MN, Lake County, MN, Meeker County, MN, Mille Lacs County, MN, Pine County, MN, Pope County, MN, Sherburne County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Wright County, MN, Ashland County, WI, Barron County, WI, Bayfield County, WI, Burnett County, WI, Douglas County, WI, Polk County, WI, Washburn County, WI

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.9 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2003-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 735 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2003-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -24 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
735 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
1169 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-24 m²/s²
0-3 km storm-relative helicity
-10 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.

IssuedProductOfficeCountiesLasted
Jul 5, 8:04 PM CDTMesoscale DiscussionSPCBrown, Chippewa, Cottonwood, Jackson, Lac qui Parle, Lincoln and 9 more86 min
Jul 6, 4:08 AM CDTMesoscale DiscussionSPCBeltrami, Clearwater, Koochiching, Pennington, Polk, Red Lake2 hr
Jul 6, 5:17 AM CDTMesoscale DiscussionSPCDodge, Goodhue, Houston, Olmsted, Wabasha, Winona118 min
Jul 6, 12:56 PM CDTMesoscale DiscussionSPCAitkin, Carlton, Itasca, Koochiching, Lake of the Woods, Saint Louis109 min
Jul 6, 1:40 PM CDTMesoscale DiscussionSPCBecker, Beltrami, Clay, Clearwater, Mahnomen, Marshall and 4 more3 hr
Jul 6, 2:20 PM CDTTornado WatchSPCAitkin, Becker, Beltrami, Cass, Clay, Clearwater and 11 more8 hr
Jul 6, 4:56 PM CDTMesoscale DiscussionSPCBenton, Big Stone, Chippewa, Kanabec, Kandiyohi, Lac qui Parle and 15 more2 hr
Jul 6, 5:29 PM CDTMesoscale DiscussionSPCAitkin, Becker, Beltrami, Cass, Clay, Clearwater and 11 more2 hr
Jul 6, 7:45 AM CDTMesoscale DiscussionSPCDodge, Fond du Lac, Jefferson, Kenosha, Milwaukee, Ozaukee and 6 more2 hr
Jul 6, 9:48 AM CDTMesoscale DiscussionSPCDane, Green, Iowa, Jefferson, Lafayette, Rock and 1 more117 min
Jul 6, 11:45 AM CDTTornado WatchSPCColumbia, Crawford, Dane, Dodge, Grant, Green and 11 more6 hr
Jul 6, 2:00 PM CDTMesoscale DiscussionSPCKenosha, Milwaukee, Racine, Walworth, Waukesha2 hr
Jul 6, 5:28 PM CDTMesoscale DiscussionSPCCrawford, Dane, Dodge, Grant, Green, Iowa and 10 more62 min

Nearby

Mesoscale Discussions in Minnesota, 2003Mesoscale Discussions in Wisconsin, 2003Every mesoscale discussion in 2003

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.