Alert archive / Kansas / Mesoscale Discussions in 2017

Mesoscale Discussion 1115

June 21, 201715 counties in Kansas; 11 counties in Nebraska; Beaver County, Texas County, Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Jun 21, 2017, 8:31 PM CDT for 15 counties in Kansas; 11 counties in Nebraska; Beaver County, Texas County, Oklahoma. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued: Jun 21, 2017, 8:31 PM CDT (01:31 UTC)
Expired: Jun 21, 2017, 10:00 PM CDT
In force: 89 min
Issued by: the Storm Prediction Center

All 28 counties

Clark County, KS, Ellis County, KS, Ford County, KS, Graham County, KS, Hodgeman County, KS, Meade County, KS, Ness County, KS, Norton County, KS, Osborne County, KS, Phillips County, KS, Rooks County, KS, Rush County, KS, Seward County, KS, Smith County, KS, Trego County, KS, Buffalo County, NE, Custer County, NE, Dawson County, NE, Franklin County, NE, Furnas County, NE, Gosper County, NE, Harlan County, NE, Kearney County, NE, Phelps County, NE, Sherman County, NE, Valley County, NE, Beaver County, OK, Texas County, OK

The radar

The Dodge City radar (KDDC), 85 km from the middle of the area, began a volume at 01:34 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 nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 1.5 hours before the alert went out and 85 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: 2529 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 1997 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 306 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

<!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 22, 3:54 PM CDT	Mesoscale Discussion	SPC	Barton, Cloud, Ellis, Finney, Ford, Grant and 26 more	3 hr

Nearby

Mesoscale Discussions in Kansas, 2017 Mesoscale Discussions in Nebraska, 2017 Mesoscale Discussions in Oklahoma, 2017 Every mesoscale discussion in 2017

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.