Alert archive / Missouri / Mesoscale Discussions in 2011

Mesoscale Discussion 1178

June 10, 20114 states

The Storm Prediction Center issued this mesoscale discussion at Jun 10, 2011, 10:56 PM CDT for 4 states. It was in force for 94 min.

The area

The outline as issued.

The facts

Issued
Jun 10, 2011, 10:56 PM CDT (03:56 UTC)
Expired
Jun 11, 2011, 12:30 AM CDT
In force
94 min
Issued by
the Storm Prediction Center
All 73 counties

Bond County, IL, Calhoun County, IL, Champaign County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Effingham County, IL, Fayette County, IL, Greene County, IL, Jasper County, IL, Jefferson County, IL, Jersey County, IL, Macon County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Montgomery County, IL, Moultrie County, IL, Perry County, IL, Piatt County, IL, Randolph County, IL, Saint Clair County, IL, Shelby County, IL, Vermilion County, IL, Washington County, IL, Fountain County, IN, Vermillion County, IN, Vigo County, IN, Cherokee County, KS, Crawford County, KS, Barton County, MO, Camden County, MO, Cedar County, MO, City of Saint Louis, MO, Cole County, MO, Crawford County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Franklin County, MO, Gasconade County, MO, Greene County, MO, Hickory County, MO, Iron County, MO, Jasper County, MO, Jefferson County, MO, Laclede County, MO, Lawrence County, MO, Lincoln County, MO, Maries County, MO, Miller County, MO, Osage County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, St. Clair County, MO, Texas County, MO, Vernon County, MO, Warren County, MO, Washington County, MO, Webster County, MO, Wright County, MO

The radar

The St Louis radar (KLSX), 39 km from the middle of the area, began a volume at 03:59 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 nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 3.9 hours before the alert went out and 202 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, Lincoln, IL at 00:00Z on 2011-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1004 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, Lincoln, IL at 00:00Z on 2011-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 square meters per square second.19395878Sfc1 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
1004 J/kg
Mixed-layer CIN
-91 J/kg
Mixed-layer LCL
1475 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
113 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 10, 7:34 PM CDTMesoscale DiscussionSPCClay, Crawford, Edwards, Effingham, Hamilton, Jasper and 7 more56 min
Jun 10, 7:47 PM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Greene, Jersey, McDonough and 3 more58 min
Jun 11, 12:40 AM CDTMesoscale DiscussionSPCClark, Clay, Crawford, Cumberland, Edwards, Effingham and 5 more2 hr
Jun 11, 12:44 PM CDTMesoscale DiscussionSPCGrant, Hamilton, Haskell, Kearny, Morton, Seward and 2 more91 min
Jun 11, 3:39 PM CDTSevere Thunderstorm WatchSPCBarber, Clark, Comanche, Finney, Ford, Grant and 11 more9 hr
Jun 11, 4:35 PM CDTSevere Thunderstorm WatchSPCCheyenne, Greeley, Logan, Rawlins, Sherman, Thomas and 2 more6 hr
Jun 11, 5:43 PM CDTMesoscale DiscussionSPCBarber, Clark, Comanche, Grant, Gray, Hamilton and 7 more62 min
Jun 11, 4:57 PM CDTMesoscale DiscussionSPCButler, Dunklin, New Madrid, Pemiscot, Ripley63 min

Nearby

Mesoscale Discussions in Missouri, 2011Mesoscale Discussions in Illinois, 2011Mesoscale Discussions in Indiana, 2011Every 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.