Alert archive / Minnesota / Mesoscale Discussions in 2016

Mesoscale Discussion 1242

July 11, 201633 counties in Minnesota; Grant County, Roberts County, South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jul 11, 2016, 1:01 AM CDT for 33 counties in Minnesota; Grant County, Roberts County, South Dakota. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued
Jul 11, 2016, 1:01 AM CDT (06:01 UTC)
Expired
Jul 11, 2016, 2:30 AM CDT
In force
89 min
Issued by
the Storm Prediction Center
All 35 counties

Aitkin County, MN, Becker County, MN, Beltrami County, MN, Benton County, MN, Big Stone County, MN, Cass County, MN, Chippewa County, MN, Clay County, MN, Clearwater County, MN, Crow Wing County, MN, Douglas County, MN, Grant County, MN, Hubbard County, MN, Itasca County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Mahnomen County, MN, Marshall County, MN, Meeker County, MN, Morrison County, MN, Norman County, MN, Otter Tail County, MN, Pennington County, MN, Polk County, MN, Pope County, MN, Red Lake County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Traverse County, MN, Wadena County, MN, Wilkin County, MN, Grant County, SD, Roberts County, SD

The radar

The Fargo/Grand Forks radar (KMVX), 132 km from the middle of the area, began a volume at 06:05 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 watches that followed

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

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 6.0 hours before the alert went out and 275 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, Aberdeen, SD at 00:00Z on 2016-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1330 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, Aberdeen, SD at 00:00Z on 2016-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 180 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
1330 J/kg
Mixed-layer CIN
-355 J/kg
Mixed-layer LCL
1033 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
180 m²/s²
0-3 km storm-relative helicity
279 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

<!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 10, 10:16 PM CDTMesoscale DiscussionSPCBecker, Big Stone, Clay, Clearwater, Grant, Mahnomen and 8 more89 min
Jul 10, 10:40 PM CDTSevere Thunderstorm WatchSPCBecker, Big Stone, Clay, Grant, Mahnomen, Marshall and 7 more6 hr
Jul 11, 1:51 AM CDTSevere Thunderstorm WatchSPCAitkin, Beltrami, Benton, Cass, Clearwater, Crow Wing and 13 more5 hr
Jul 11, 3:22 AM CDTMesoscale DiscussionSPCAitkin, Benton, Carlton, Chisago, Crow Wing, Isanti and 5 more83 min
Jul 11, 4:06 AM CDTMesoscale DiscussionSPCBecker, Big Stone, Clay, Grant, Otter Tail, Traverse and 1 more84 min
Jul 11, 3:16 PM CDTMesoscale DiscussionSPCAnoka, Blue Earth, Brown, Carver, Cottonwood, Dakota and 28 more119 min
Jul 11, 3:48 PM CDTSevere Thunderstorm WatchSPCAnoka, Benton, Blue Earth, Brown, Carver, Chippewa and 36 more7 hr
Jul 11, 5:17 PM CDTMesoscale DiscussionSPCAnoka, Benton, Chisago, Hennepin, Isanti, Kandiyohi and 5 more58 min
Jul 11, 5:31 PM CDTTornado WatchSPCAnoka, Benton, Chisago, Isanti, Kanabec, Kandiyohi and 5 more4 hr
Jul 11, 6:03 PM CDTSevere Thunderstorm WatchSPCPine5 hr
Jul 10, 7:35 PM CDTMesoscale DiscussionSPCCampbell, Corson, Dewey, Edmunds, McPherson, Perkins and 1 more55 min
Jul 10, 7:54 PM CDTMesoscale DiscussionSPCBrule, Buffalo, Dewey, Faulk, Haakon, Hand and 12 more96 min
Jul 11, 1:32 AM CDTMesoscale DiscussionSPCCampbell, Corson, McPherson58 min
Jul 11, 4:03 PM CDTMesoscale DiscussionSPCCampbell, Corson, McPherson, Walworth117 min

Nearby

Mesoscale Discussions in Minnesota, 2016Mesoscale Discussions in South Dakota, 2016Every mesoscale discussion in 2016

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.