Alert archive / Missouri / Mesoscale Discussions in 2012

Mesoscale Discussion 1119

June 11, 20124 states

The Storm Prediction Center issued this mesoscale discussion at Jun 11, 2012, 9:31 AM CDT for 4 states. It was in force for 59 min.

The area

The outline as issued.

The facts

Issued
Jun 11, 2012, 9:31 AM CDT (14:31 UTC)
Expired
Jun 11, 2012, 10:30 AM CDT
In force
59 min
Issued by
the Storm Prediction Center
Chance of a watch
95%
All 58 counties

Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Clay County, AR, Cleburne County, AR, Fulton County, AR, Greene County, AR, Independence County, AR, Izard County, AR, Johnson County, AR, Lawrence County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Pope County, AR, Randolph County, AR, Searcy County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, Washington County, AR, Cherokee County, KS, Barry County, MO, Bollinger County, MO, Butler County, MO, Carter County, MO, Christian County, MO, Crawford County, MO, Dent County, MO, Douglas County, MO, Franklin County, MO, Greene County, MO, Howell County, MO, Iron County, MO, Jasper County, MO, Jefferson County, MO, Lawrence County, MO, Madison County, MO, McDonald County, MO, Newton County, MO, Oregon County, MO, Ozark County, MO, Phelps County, MO, Reynolds County, MO, Ripley County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Shannon County, MO, Stoddard County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Washington County, MO, Wayne County, MO, Webster County, MO, Wright County, MO, Ottawa County, OK

The radar

The Springfield radar (KSGF), 150 km from the middle of the area, began a volume at 14:34 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

Springfield, MO (KSGF), launched 12:00Z, 2.5 hours before the alert went out and 184 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, Springfield, MO at 12:00Z on 2012-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2246 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, Springfield, MO at 12:00Z on 2012-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 287 square meters per square second.1939Sfc1 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
2246 J/kg
Mixed-layer CIN
-60 J/kg
Mixed-layer LCL
805 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
287 m²/s²
0-3 km storm-relative helicity
283 m²/s²
Significant tornado parameter
0.0
Supercell composite
12.3

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 11, 9:45 AM CDTSevere Thunderstorm WatchSPCBaxter, Benton, Boone, Carroll, Clay, Cleburne and 23 more6 hr
Jun 11, 1:12 PM CDTMesoscale DiscussionSPCArkansas, Craighead, Crittenden, Cross, Faulkner, Garland and 17 more93 min
Jun 11, 1:28 PM CDTSevere Thunderstorm WatchSPCArkansas, Cleveland, Crittenden, Cross, Dallas, Faulkner and 19 more7 hr
Jun 11, 3:29 PM CDTMesoscale DiscussionSPCArkansas, Cleveland, Crittenden, Cross, Dallas, Garland and 14 more2 hr
Jun 11, 3:59 PM CDTMesoscale DiscussionSPCCrawford, Polk, Scott, Sebastian, Washington91 min
Jun 11, 5:05 PM CDTMesoscale DiscussionSPCArkansas, Calhoun, Cleburne, Cleveland, Conway, Craighead and 27 more55 min
Jun 11, 5:17 PM CDTSevere Thunderstorm WatchSPCAshley, Chicot6 hr
Jun 10, 8:03 PM CDTSevere Thunderstorm WatchSPCButler, Chase, Chautauqua, Cowley, Elk, Greenwood and 9 more2 hr
Jun 10, 10:22 PM CDTMesoscale DiscussionSPCAtchison, Brown, Butler, Chase, Clay, Cowley and 27 more53 min

Nearby

Mesoscale Discussions in Missouri, 2012Mesoscale Discussions in Arkansas, 2012Mesoscale Discussions in Kansas, 2012Every mesoscale discussion in 2012

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.