Alert archive / Kansas / Mesoscale Discussions in 2018

Mesoscale Discussion 868

June 24, 201814 counties in Kansas; Beaver County, Cimarron County, Texas County, Oklahoma; 9 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 24, 2018, 7:06 PM CDT for 14 counties in Kansas; Beaver County, Cimarron County, Texas County, Oklahoma; 9 counties in Texas. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued: Jun 24, 2018, 7:06 PM CDT (00:06 UTC)
Expired: Jun 24, 2018, 8:30 PM CDT
In force: 84 min
Issued by: the Storm Prediction Center
Chance of a watch: 60%

All 26 counties

Clark County, KS, Finney County, KS, Ford County, KS, Grant County, KS, Gray County, KS, Haskell County, KS, Hodgeman County, KS, Kearny County, KS, Meade County, KS, Morton County, KS, Ness County, KS, Seward County, KS, Stanton County, KS, Stevens County, KS, Beaver County, OK, Cimarron County, OK, Texas County, OK, Dallam County, TX, Hansford County, TX, Hartley County, TX, Hutchinson County, TX, Moore County, TX, Ochiltree County, TX, Oldham County, TX, Roberts County, TX, Sherman County, TX

The radar

The Amarillo radar (KAMA), 180 km from the middle of the area, began a volume at 00:08 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

Amarillo Airport, TX (KAMA), launched 00:00Z, 0.1 hours before the alert went out and 181 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: 2234 J/kg
Mixed-layer CIN: -239 J/kg
Mixed-layer LCL: 1484 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 344 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.7

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 24, 7:51 PM CDT	Mesoscale Discussion	SPC	Ellis, Jewell, Osborne, Phillips, Rooks, Smith	84 min
Jun 24, 8:50 PM CDT	Severe Thunderstorm Watch	SPC	Clark, Ford, Hodgeman, Meade	7 hr
Jun 24, 9:49 PM CDT	Mesoscale Discussion	SPC	Barber, Clark, Comanche, Kiowa, Pratt	86 min
Jun 24, 10:08 PM CDT	Severe Thunderstorm Watch	SPC	Barber, Comanche, Kiowa, Pratt	6 hr
Jun 24, 11:53 PM CDT	Mesoscale Discussion	SPC	Barber, Harper, Kingman, Sedgwick, Sumner	67 min
Jun 25, 12:31 AM CDT	Severe Thunderstorm Watch	SPC	Chautauqua, Cowley, Elk, Harper, Montgomery, Sumner	5 hr
Jun 25, 3:34 AM CDT	Mesoscale Discussion	SPC	Chautauqua, Cherokee, Elk, Labette, Montgomery, Wilson	86 min
Jun 24, 7:48 PM CDT	Mesoscale Discussion	SPC	Bowie, Camp, Cass, Marion, Morris, Red River and 1 more	117 min

Nearby

Mesoscale Discussions in Kansas, 2018 Mesoscale Discussions in Texas, 2018 Mesoscale Discussions in Oklahoma, 2018 Every mesoscale discussion in 2018

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.