Alert archive / Texas / Mesoscale Discussions in 2017

Mesoscale Discussion 1022

June 13, 201710 counties in Kansas; 9 counties in Oklahoma; 16 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 13, 2017, 8:55 PM CDT for 10 counties in Kansas; 9 counties in Oklahoma; 16 counties in Texas. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued: Jun 13, 2017, 8:55 PM CDT (01:55 UTC)
Expired: Jun 13, 2017, 10:00 PM CDT
In force: 65 min
Issued by: the Storm Prediction Center

All 35 counties

Barber County, KS, Clark County, KS, Comanche County, KS, Edwards County, KS, Ford County, KS, Kiowa County, KS, Pawnee County, KS, Pratt County, KS, Rush County, KS, Stafford County, KS, Beckham County, OK, Dewey County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Roger Mills County, OK, Woods County, OK, Woodward County, OK, Briscoe County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Donley County, TX, Garza County, TX, Gray County, TX, Hall County, TX, Hemphill County, TX, Kent County, TX, King County, TX, Motley County, TX, Stonewall County, TX, Wheeler County, TX

The radar

The Vance AFB radar (KVNX), 173 km from the middle of the area, began a volume at 01:56 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

Amarillo Airport, TX (KAMA), launched 00:00Z, 1.9 hours before the alert went out and 190 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: 42 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 4102 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 77 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

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 13, 7:48 PM CDT	Mesoscale Discussion	SPC	Barton, Clay, Cloud, Ellsworth, Jewell, Lincoln and 8 more	87 min
Jun 13, 9:36 PM CDT	Mesoscale Discussion	SPC	Clay, Cloud, Ellsworth, Jewell, Lincoln, Mitchell and 8 more	54 min
Jun 14, 3:37 PM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Butler, Chase, Chautauqua, Coffey and 28 more	2 hr
Jun 14, 6:11 PM CDT	Mesoscale Discussion	SPC	Anderson, Bourbon, Johnson, Linn, Miami, Wyandotte	64 min
Jun 14, 3:33 PM CDT	Mesoscale Discussion	SPC	Harmon	2 hr
Jun 14, 6:02 PM CDT	Severe Thunderstorm Watch	SPC	Beckham, Greer, Harmon, Jackson, Kiowa, Tillman and 1 more	6 hr
Jun 14, 1:57 PM CDT	Mesoscale Discussion	SPC	Pecos, Terrell	3 hr

Nearby

Mesoscale Discussions in Texas, 2017 Mesoscale Discussions in Kansas, 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.