Alert archive / Missouri / Mesoscale Discussions in 2015

Mesoscale Discussion 198

April 3, 201514 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Apr 3, 2015, 4:37 AM CDT for 14 counties in Missouri. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued: Apr 3, 2015, 4:37 AM CDT (09:37 UTC)
Expired: Apr 3, 2015, 6:00 AM CDT
In force: 83 min
Issued by: the Storm Prediction Center

Counties Christian County, MO, Dent County, MO, Douglas County, MO, Howell County, MO, Laclede County, MO, Oregon County, MO, Ozark County, MO, Phelps County, MO, Pulaski County, MO, Shannon County, MO, Taney County, MO, Texas County, MO, Webster County, MO, Wright County, MO

The radar

The Springfield radar (KSGF), 95 km from the middle of the area, began a volume at 09:41 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

Springfield, MO (KSGF), launched 00:00Z, 9.6 hours before the alert went out and 128 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: 1838 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1146 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 149 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 5.0

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
Apr 2, 7:02 PM CDT	Tornado Watch	SPC	Barry, Barton, Cedar, Christian, Dade, Dallas and 21 more	8 hr
Apr 2, 7:32 PM CDT	Mesoscale Discussion	SPC	Bollinger, Cape Girardeau, Iron, Madison, Perry, Sainte Genevieve and 3 more	58 min
Apr 2, 10:12 PM CDT	Mesoscale Discussion	SPC	Barry, Christian, Douglas, Lawrence, McDonald, Newton and 3 more	93 min
Apr 2, 10:41 PM CDT	Severe Thunderstorm Watch	SPC	Bollinger, Butler, Cape Girardeau, Carter, Crawford, Iron and 13 more	6 hr
Apr 3, 1:16 AM CDT	Mesoscale Discussion	SPC	Barry, Barton, Butler, Carter, Cedar, Christian and 23 more	59 min
Apr 3, 1:35 AM CDT	Tornado Watch	SPC	Butler, Carter, Dunklin, Mississippi, New Madrid, Pemiscot and 2 more	6 hr
Apr 3, 1:52 AM CDT	Severe Thunderstorm Watch	SPC	Barry, Barton, Camden, Cedar, Christian, Dade and 24 more	4 hr
Apr 3, 3:39 AM CDT	Mesoscale Discussion	SPC	Scott	66 min
Apr 3, 5:43 AM CDT	Mesoscale Discussion	SPC	Dunklin, Pemiscot	2 hr
Apr 3, 11:56 AM CDT	Mesoscale Discussion	SPC	Mississippi, Pemiscot	94 min
Apr 3, 12:14 PM CDT	Tornado Watch	SPC	Mississippi, New Madrid, Pemiscot	8 hr

Nearby

Mesoscale Discussions in Missouri, 2015 Every 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.