Alert archive / Kansas / Mesoscale Discussions in 2018

Mesoscale Discussion 622

June 2, 20184 states

The Storm Prediction Center issued this mesoscale discussion at Jun 2, 2018, 12:50 AM CDT for 4 states. It was in force for 55 min.

The area

The outline as issued.

The facts

Issued: Jun 2, 2018, 12:50 AM CDT (05:50 UTC)
Expired: Jun 2, 2018, 1:45 AM CDT
In force: 55 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

All 47 counties

Fremont County, IA, Mills County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Taylor County, IA, Anderson County, KS, Atchison County, KS, Brown County, KS, Doniphan County, KS, Douglas County, KS, Franklin County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Marshall County, KS, Miami County, KS, Nemaha County, KS, Osage County, KS, Pottawatomie County, KS, Shawnee County, KS, Wabaunsee County, KS, Wyandotte County, KS, Andrew County, MO, Atchison County, MO, Bates County, MO, Buchanan County, MO, Cass County, MO, Clay County, MO, Clinton County, MO, DeKalb County, MO, Gentry County, MO, Holt County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Nodaway County, MO, Platte County, MO, Ray County, MO, Gage County, NE, Johnson County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE

The radar

The Topeka radar (KTWX), 93 km from the middle of the area, began a volume at 05:49 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

Topeka, KS (KFOE), launched 00:00Z, 5.8 hours before the alert went out and 77 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: 2011 J/kg
Mixed-layer CIN: -211 J/kg
Mixed-layer LCL: 1778 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 152 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

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 1, 10:05 PM CDT	Severe Thunderstorm Watch	SPC	Buena Vista, Cherokee, Harrison, Ida, Mills, Monona and 5 more	5 hr
Jun 2, 5:48 AM CDT	Severe Thunderstorm Watch	SPC	Allen, Anderson, Bourbon, Cherokee, Coffey, Crawford and 8 more	4 hr
Jun 2, 9:12 AM CDT	Mesoscale Discussion	SPC	Benton, Callaway, Camden, Cape Girardeau, Cedar, Cole and 27 more	2 hr
Jun 2, 1:33 PM CDT	Mesoscale Discussion	SPC	Howell, Oregon, Ozark, Ripley	117 min
Jun 2, 2:19 PM CDT	Severe Thunderstorm Watch	SPC	Butler, Carter, Douglas, Dunklin, Howell, Mississippi and 11 more	10 hr
Jun 2, 3:42 PM CDT	Mesoscale Discussion	SPC	Bollinger, Butler, Cape Girardeau, Carter, Dent, Douglas and 22 more	2 hr
Jun 2, 6:31 PM CDT	Mesoscale Discussion	SPC	Butler, Carter, Dunklin, Howell, New Madrid, Oregon and 6 more	89 min
Jun 1, 7:08 PM CDT	Mesoscale Discussion	SPC	Adams, Boyd, Buffalo, Clay, Garfield, Greeley and 12 more	2 hr
Jun 1, 9:32 PM CDT	Mesoscale Discussion	SPC	Adams, Antelope, Boone, Buffalo, Butler, Clay and 32 more	118 min

Nearby

Mesoscale Discussions in Kansas, 2018 Mesoscale Discussions in Missouri, 2018 Mesoscale Discussions in Iowa, 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.