Alert archive / Iowa / Mesoscale Discussions in 2014

Mesoscale Discussion 1053

June 17, 201417 counties in Iowa; 11 counties in Minnesota; 6 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2014, 11:23 PM CDT for 17 counties in Iowa; 11 counties in Minnesota; 6 counties in South Dakota. It was in force for 37 min.

The area

The outline as issued.

The facts

Issued
Jun 17, 2014, 11:23 PM CDT (04:23 UTC)
Expired
Jun 18, 2014, 12:00 AM CDT
In force
37 min
Issued by
the Storm Prediction Center
All 34 counties

Buena Vista County, IA, Cherokee County, IA, Clay County, IA, Dickinson County, IA, Emmet County, IA, Hancock County, IA, Humboldt County, IA, Kossuth County, IA, Lyon County, IA, O'Brien County, IA, Osceola County, IA, Palo Alto County, IA, Plymouth County, IA, Pocahontas County, IA, Sioux County, IA, Winnebago County, IA, Wright County, IA, Blue Earth County, MN, Cottonwood County, MN, Faribault County, MN, Jackson County, MN, Martin County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN, Rock County, MN, Waseca County, MN, Watonwan County, MN, Clay County, SD, Lake County, SD, Lincoln County, SD, Minnehaha County, SD, Moody County, SD, Union County, SD

The radar

The Sioux Falls radar (KFSD), 151 km from the middle of the area, began a volume at 04:22 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 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 00:00Z, 4.4 hours before the alert went out and 212 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 00:00Z on 2014-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 901 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 00:00Z on 2014-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -31 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
901 J/kg
Mixed-layer CIN
-172 J/kg
Mixed-layer LCL
1176 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
-31 m²/s²
0-3 km storm-relative helicity
71 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.6

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
Jun 17, 7:44 PM CDTMesoscale DiscussionSPCAllamakee, Howard, Winneshiek2 hr
Jun 17, 9:38 PM CDTMesoscale DiscussionSPCClinton, Jackson97 min
Jun 17, 10:13 PM CDTSevere Thunderstorm WatchSPCAllamakee, Buchanan, Chickasaw, Clayton, Clinton, Delaware and 8 more6 hr
Jun 17, 10:18 PM CDTMesoscale DiscussionSPCCherokee, Clay, Dickinson, Ida, Lyon, O'Brien and 4 more57 min
Jun 17, 11:01 PM CDTMesoscale DiscussionSPCPlymouth, Sioux29 min
Jun 17, 11:39 PM CDTTornado WatchSPCBlack Hawk, Bremer, Buena Vista, Butler, Calhoun, Cerro Gordo and 25 more5 hr
Jun 18, 1:52 AM CDTMesoscale DiscussionSPCBoone, Buena Vista, Calhoun, Carroll, Cerro Gordo, Cherokee and 27 more83 min
Jun 18, 3:07 AM CDTMesoscale DiscussionSPCAllamakee, Black Hawk, Bremer, Buchanan, Butler, Chickasaw and 11 more53 min
Jun 18, 3:47 AM CDTSevere Thunderstorm WatchSPCAllamakee, Black Hawk, Bremer, Butler, Calhoun, Cerro Gordo and 16 more4 hr
Jun 18, 5:36 AM CDTMesoscale DiscussionSPCAllamakee, Black Hawk, Bremer, Buchanan, Butler, Clayton and 12 more54 min
Jun 18, 3:29 PM CDTMesoscale DiscussionSPCLyon, Plymouth, Sioux91 min
Jun 18, 6:23 PM CDTTornado WatchSPCLyon, Plymouth, Sioux, Woodbury5 hr
Jun 17, 10:36 PM CDTMesoscale DiscussionSPCAnoka, Blue Earth, Brown, Carver, Chisago, Dakota and 16 more84 min
Jun 17, 7:33 PM CDTMesoscale DiscussionSPCButte, Harding27 min
Jun 17, 8:58 PM CDTSevere Thunderstorm WatchSPCButte, Custer, Fall River, Haakon, Harding, Lawrence and 4 more5 hr
Jun 18, 1:19 AM CDTMesoscale DiscussionSPCButte, Corson, Custer, Dewey, Haakon, Lawrence and 4 more56 min
Jun 18, 4:45 AM CDTMesoscale DiscussionSPCCampbell, Corson, Dewey, Haakon, Hughes, Hyde and 10 more90 min
Jun 18, 1:13 PM CDTMesoscale DiscussionSPCBeadle, Brown, Campbell, Corson, Dewey, Edmunds and 10 more92 min
Jun 18, 1:28 PM CDTTornado WatchSPCBuffalo, Campbell, Corson, Dewey, Edmunds, Faulk and 13 more9 hr
Jun 18, 5:23 PM CDTMesoscale DiscussionSPCBrown, Campbell, Edmunds, McPherson, Marshall, Walworth97 min

Nearby

Mesoscale Discussions in Iowa, 2014Mesoscale Discussions in Minnesota, 2014Mesoscale Discussions in South Dakota, 2014Every mesoscale discussion in 2014

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.