Alert archive / Missouri / Mesoscale Discussions in 2013

Mesoscale Discussion 877

May 30, 20134 states

The Storm Prediction Center issued this mesoscale discussion at May 30, 2013, 11:44 AM CDT for 4 states. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued: May 30, 2013, 11:44 AM CDT (16:44 UTC)
Expired: May 30, 2013, 1:15 PM CDT
In force: 91 min
Issued by: the Storm Prediction Center
Chance of a watch: 95%

All 61 counties

Benton County, AR, Boone County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Johnson County, AR, Logan County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Scott County, AR, Sebastian County, AR, Washington County, AR, Bourbon County, KS, Cherokee County, KS, Crawford County, KS, Labette County, KS, Neosho County, KS, Barry County, MO, Barton County, MO, Benton County, MO, Camden County, MO, Cedar County, MO, Christian County, MO, Cole County, MO, Dade County, MO, Dallas County, MO, Douglas County, MO, Greene County, MO, Hickory County, MO, Jasper County, MO, Laclede County, MO, Lawrence County, MO, McDonald County, MO, Miller County, MO, Moniteau County, MO, Morgan County, MO, Newton County, MO, Ozark County, MO, Polk County, MO, Pulaski County, MO, St. Clair County, MO, Stone County, MO, Taney County, MO, Vernon County, MO, Webster County, MO, Wright County, MO, Adair County, OK, Cherokee County, OK, Craig County, OK, Delaware County, OK, Haskell County, OK, LeFlore County, OK, Mayes County, OK, Muskogee County, OK, Nowata County, OK, Ottawa County, OK, Rogers County, OK, Sequoyah County, OK, Wagoner County, OK, Washington County, OK

The radar

The Springfield radar (KSGF), 74 km from the middle of the area, began a volume at 16:45 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, 4.7 hours before the alert went out and 28 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1066 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 181 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.

Issued	Product	Office	Counties	Lasted
May 29, 10:44 PM CDT	Severe Thunderstorm Watch	SPC	Benton, Crawford, Sebastian, Washington	7 hr
May 30, 1:21 PM CDT	Tornado Watch	SPC	Baxter, Benton, Boone, Carroll, Clark, Cleburne and 30 more	8 hr
May 30, 2:35 PM CDT	Mesoscale Discussion	SPC	Benton, Crawford, Franklin, Garland, Howard, Logan and 9 more	55 min
May 30, 5:23 PM CDT	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Clark, Cleburne and 29 more	2 hr
May 29, 7:36 PM CDT	Mesoscale Discussion	SPC	Barber, Barton, Clark, Comanche, Edwards, Ellis and 20 more	84 min
May 29, 8:06 PM CDT	Mesoscale Discussion	SPC	Jewell, Mitchell, Osborne, Phillips, Rooks, Smith	54 min
May 30, 1:55 PM CDT	Mesoscale Discussion	SPC	Barber, Barton, Cheyenne, Clark, Comanche, Decatur and 35 more	2 hr
May 30, 11:29 AM CDT	Mesoscale Discussion	SPC	Bollinger, Cape Girardeau, Carter, Clark, Crawford, Dent and 23 more	61 min
May 30, 12:32 PM CDT	Tornado Watch	SPC	Audrain, Bollinger, Boone, Callaway, Cape Girardeau, Clark and 28 more	7 hr
May 30, 2:16 PM CDT	Mesoscale Discussion	SPC	Audrain, Bollinger, Callaway, Cape Girardeau, Clark, Crawford and 28 more	59 min
May 30, 3:52 PM CDT	Mesoscale Discussion	SPC	Audrain, Bollinger, Callaway, Cape Girardeau, Clark, Crawford and 28 more	113 min
May 29, 10:25 PM CDT	Mesoscale Discussion	SPC	Atoka, Canadian, Carter, Cleveland, Coal, Creek and 21 more	65 min
May 30, 3:18 AM CDT	Mesoscale Discussion	SPC	Atoka, Canadian, Carter, Cleveland, Coal, Creek and 21 more	87 min
May 30, 12:20 PM CDT	Mesoscale Discussion	SPC	Caddo, Canadian, Carter, Cleveland, Comanche, Cotton and 20 more	2 hr
May 30, 12:52 PM CDT	Tornado Watch	SPC	Atoka, Bryan, Caddo, Canadian, Carter, Cleveland and 38 more	10 hr
May 30, 5:52 PM CDT	Mesoscale Discussion	SPC	Atoka, Carter, Cherokee, Cleveland, Coal, Comanche and 29 more	113 min

Nearby

Mesoscale Discussions in Missouri, 2013 Mesoscale Discussions in Oklahoma, 2013 Mesoscale Discussions in Arkansas, 2013 Every mesoscale discussion in 2013

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.