Alert archive / Iowa / Mesoscale Discussions in 2015

Mesoscale Discussion 1116

June 22, 20154 states

The Storm Prediction Center issued this mesoscale discussion at Jun 22, 2015, 7:42 AM CDT for 4 states. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued
Jun 22, 2015, 7:42 AM CDT (12:42 UTC)
Expired
Jun 22, 2015, 9:15 AM CDT
In force
93 min
Issued by
the Storm Prediction Center
All 88 counties

Allamakee County, IA, Benton County, IA, Black Hawk County, IA, Boone County, IA, Bremer County, IA, Buchanan County, IA, Buena Vista County, IA, Butler County, IA, Calhoun County, IA, Cedar County, IA, Cerro Gordo County, IA, Chickasaw County, IA, Clayton County, IA, Clinton County, IA, Delaware County, IA, Dubuque County, IA, Fayette County, IA, Floyd County, IA, Franklin County, IA, Grundy County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Howard County, IA, Humboldt County, IA, Iowa County, IA, Jackson County, IA, Johnson County, IA, Jones County, IA, Kossuth County, IA, Linn County, IA, Marshall County, IA, Mitchell County, IA, Pocahontas County, IA, Scott County, IA, Story County, IA, Tama County, IA, Webster County, IA, Winnebago County, IA, Winneshiek County, IA, Worth County, IA, Wright County, IA, Carroll County, IL, Jo Daviess County, IL, Stephenson County, IL, Whiteside County, IL, Blue Earth County, MN, Carver County, MN, Dakota County, MN, Dodge County, MN, Faribault County, MN, Fillmore County, MN, Freeborn County, MN, Goodhue County, MN, Houston County, MN, Le Sueur County, MN, Mower County, MN, Nicollet County, MN, Olmsted County, MN, Ramsey County, MN, Rice County, MN, Scott County, MN, Sibley County, MN, Steele County, MN, Wabasha County, MN, Waseca County, MN, Washington County, MN, Winona County, MN, Buffalo County, WI, Clark County, WI, Crawford County, WI, Dunn County, WI, Eau Claire County, WI, Grant County, WI, Green County, WI, Iowa County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Lafayette County, WI, Monroe County, WI, Pepin County, WI, Pierce County, WI, Richland County, WI, Saint Croix County, WI, Sauk County, WI, Trempealeau County, WI, Vernon County, WI

The radar

The La Crosse radar (KARX), 164 km from the middle of the area, began a volume at 12:46 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 12:00Z, 0.7 hours before the alert went out and 193 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 2015-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 156 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 2015-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 83 square meters per square second.1939587897Sfc1 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
156 J/kg
Mixed-layer CIN
-219 J/kg
Mixed-layer LCL
1177 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
83 m²/s²
0-3 km storm-relative helicity
126 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
Jun 21, 7:08 PM CDTMesoscale DiscussionSPCFranklin, Gallatin, Hamilton, Hardin, Jackson, Jefferson and 6 more67 min
Jun 22, 8:08 AM CDTSevere Thunderstorm WatchSPCCarroll, Jo Daviess, Stephenson4 hr
Jun 22, 9:14 AM CDTMesoscale DiscussionSPCBoone, Bureau, Cook, DeKalb, DuPage, Grundy and 11 more61 min
Jun 22, 9:39 AM CDTSevere Thunderstorm WatchSPCBoone, Bureau, Cook, DeKalb, DuPage, Ford and 19 more3 hr
Jun 22, 11:00 AM CDTMesoscale DiscussionSPCBureau, Cook, DeKalb, DuPage, Grundy, Henry and 11 more2 hr
Jun 22, 1:22 PM CDTMesoscale DiscussionSPCAdams, Brown, Bureau, Carroll, Cass, Fulton and 21 more113 min
Jun 22, 3:56 PM CDTTornado WatchSPCBureau, Carroll, Cass, Champaign, Coles, DeKalb and 34 more9 hr
Jun 22, 6:08 PM CDTMesoscale DiscussionSPCBureau, DeWitt, Fulton, Grundy, Hancock, Henderson and 21 more67 min
Jun 22, 2:25 AM CDTSevere Thunderstorm WatchSPCClay, Dickinson, Lyon, O'Brien, Osceola, Sioux6 hr
Jun 22, 3:10 AM CDTMesoscale DiscussionSPCBenton, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 16 more95 min
Jun 22, 4:53 AM CDTMesoscale DiscussionSPCAllamakee, Cerro Gordo, Chickasaw, Clay, Clayton, Dickinson and 15 more2 hr
Jun 22, 5:33 AM CDTSevere Thunderstorm WatchSPCBlack Hawk, Boone, Bremer, Butler, Cerro Gordo, Emmet and 15 more6 hr
Jun 22, 6:03 AM CDTSevere Thunderstorm WatchSPCAllamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more4 hr
Jun 21, 10:41 PM CDTSevere Thunderstorm WatchSPCBecker, Big Stone, Clay, Grant, Norman, Otter Tail and 3 more6 hr
Jun 21, 11:25 PM CDTMesoscale DiscussionSPCBecker, Big Stone, Clay, Douglas, Grant, Otter Tail and 5 more95 min
Jun 22, 1:17 AM CDTMesoscale DiscussionSPCBig Stone, Blue Earth, Brown, Carver, Chippewa, Cottonwood and 32 more58 min
Jun 22, 3:16 AM CDTMesoscale DiscussionSPCBig Stone, Grant, Lac qui Parle, Lincoln, Pipestone, Rock and 1 more89 min
Jun 22, 2:50 PM CDTMesoscale DiscussionSPCAitkin, Anoka, Benton, Carlton, Carver, Chisago and 10 more55 min
Jun 22, 4:48 PM CDTSevere Thunderstorm WatchSPCAshland, Bayfield, Burnett, Douglas, Florence, Forest and 7 more4 hr

Nearby

Mesoscale Discussions in Iowa, 2015Mesoscale Discussions in Minnesota, 2015Mesoscale Discussions in Wisconsin, 2015Every mesoscale discussion in 2015

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.