Alert archive / Missouri / Mesoscale Discussions in 2011

Mesoscale Discussion 1411

June 26, 201135 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Jun 26, 2011, 10:06 PM CDT for 35 counties in Missouri. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued: Jun 26, 2011, 10:06 PM CDT (03:06 UTC)
Expired: Jun 26, 2011, 11:30 PM CDT
In force: 84 min
Issued by: the Storm Prediction Center

All 35 counties

Adair County, MO, Andrew County, MO, Audrain County, MO, Boone County, MO, Buchanan County, MO, Caldwell County, MO, Callaway County, MO, Carroll County, MO, Chariton County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Howard County, MO, Lincoln County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Mercer County, MO, Monroe County, MO, Montgomery County, MO, Nodaway County, MO, Pike County, MO, Ralls County, MO, Randolph County, MO, Ray County, MO, Saint Charles County, MO, Saline County, MO, Shelby County, MO, Sullivan County, MO, Warren County, MO, Worth County, MO

The radar

The Pleasant Hill radar (KEAX), 129 km from the middle of the area, began a volume at 03:09 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.

Severe Thunderstorm Watch 565Jun 27, 1:35 AM CDT

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 3.1 hours before the alert went out and 216 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: 3777 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 1305 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 307 m²/s²
Significant tornado parameter: 2.0
Supercell composite: 17.0

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
Jun 26, 7:12 PM CDT	Severe Thunderstorm Watch	SPC	Clark, Knox, Lewis, Marion, Scotland	6 hr
Jun 26, 10:02 PM CDT	Severe Thunderstorm Watch	SPC	Clark, Scotland	5 hr
Jun 27, 12:58 AM CDT	Mesoscale Discussion	SPC	Audrain, Benton, Boone, Buchanan, Caldwell, Callaway and 38 more	92 min
Jun 27, 1:32 AM CDT	Severe Thunderstorm Watch	SPC	Audrain, Bates, Benton, Boone, Buchanan, Caldwell and 46 more	7 hr
Jun 27, 3:14 AM CDT	Mesoscale Discussion	SPC	Bollinger, Cape Girardeau, Iron, Madison, Perry, Sainte Genevieve and 2 more	91 min
Jun 27, 5:38 AM CDT	Mesoscale Discussion	SPC	Andrew, Audrain, Bates, Benton, Boone, Buchanan and 43 more	97 min
Jun 27, 11:30 AM CDT	Mesoscale Discussion	SPC	Dunklin, Mississippi, New Madrid, Pemiscot	90 min
Jun 27, 3:54 PM CDT	Mesoscale Discussion	SPC	Barry, Barton, Camden, Cedar, Christian, Dade and 21 more	2 hr

Nearby

Mesoscale Discussions in Missouri, 2011 Every mesoscale discussion in 2011

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.