Alert archive / Oklahoma / Mesoscale Discussions in 2013

Mesoscale Discussion 709

May 19, 2013Chautauqua County, Cowley County, Elk County, Kansas; 11 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at May 19, 2013, 6:27 PM CDT for Chautauqua County, Cowley County, Elk County, Kansas; 11 counties in Oklahoma. It was in force for 63 min.

The area

The outline as issued.

The facts

Issued: May 19, 2013, 6:27 PM CDT (23:27 UTC)
Expired: May 19, 2013, 7:30 PM CDT
In force: 63 min
Issued by: the Storm Prediction Center

Counties Chautauqua County, KS, Cowley County, KS, Elk County, KS, Creek County, OK, Kay County, OK, Lincoln County, OK, Noble County, OK, Okfuskee County, OK, Oklahoma County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Tulsa County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 97 km from the middle of the area, began a volume at 23:28 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

Lamont, OK (KLMN), launched 12:00Z, 11.5 hours before the alert went out and 82 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: 697 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 1033 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 194 m²/s²
0-3 km storm-relative helicity: 213 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.9

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
May 18, 7:29 PM CDT	Tornado Watch	SPC	Clay, Cloud, Dickinson, Geary, Jewell, Marshall and 7 more	5 hr
May 18, 7:40 PM CDT	Mesoscale Discussion	SPC	Barber, Barton, Comanche, Dickinson, Edwards, Ellsworth and 15 more	65 min
May 18, 10:00 PM CDT	Mesoscale Discussion	SPC	Anderson, Atchison, Brown, Coffey, Doniphan, Douglas and 14 more	30 min
May 18, 10:39 PM CDT	Tornado Watch	SPC	Anderson, Atchison, Brown, Coffey, Doniphan, Douglas and 11 more	3 hr
May 18, 11:40 PM CDT	Mesoscale Discussion	SPC	Clay, Geary, Marshall, Morris, Pottawatomie, Riley and 1 more	35 min
May 19, 5:25 AM CDT	Mesoscale Discussion	SPC	Allen, Bourbon, Cherokee, Crawford, Labette, Montgomery and 2 more	2 hr
May 19, 12:51 PM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Atchison, Brown, Butler, Chase and 41 more	114 min
May 19, 1:47 PM CDT	Tornado Watch	SPC	Allen, Anderson, Atchison, Barber, Brown, Butler and 53 more	10 hr
May 19, 4:57 PM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Atchison, Butler, Chase, Chautauqua and 22 more	63 min
May 19, 5:54 PM CDT	Mesoscale Discussion	SPC	Cherokee, Crawford	66 min
May 19, 6:25 PM CDT	Tornado Watch	SPC	Bourbon, Cherokee, Crawford	9 hr
May 18, 9:03 PM CDT	Mesoscale Discussion	SPC	Alfalfa, Beaver, Beckham, Blaine, Caddo, Canadian and 33 more	57 min
May 18, 10:44 PM CDT	Mesoscale Discussion	SPC	Cleveland, Creek, Garvin, Grady, Hughes, Lincoln and 14 more	31 min
May 18, 11:00 PM CDT	Severe Thunderstorm Watch	SPC	Carter, Cleveland, Coal, Comanche, Cotton, Craig and 24 more	4 hr
May 19, 1:45 PM CDT	Mesoscale Discussion	SPC	Alfalfa, Blaine, Caddo, Canadian, Carter, Cleveland and 26 more	60 min
May 19, 2:14 PM CDT	Tornado Watch	SPC	Adair, Atoka, Bryan, Caddo, Canadian, Carter and 50 more	9 hr
May 19, 3:27 PM CDT	Mesoscale Discussion	SPC	Alfalfa, Beaver, Ellis, Harper, Woods, Woodward	63 min
May 19, 4:37 PM CDT	Mesoscale Discussion	SPC	Cleveland, Lincoln, Oklahoma, Pottawatomie	53 min
May 19, 5:08 PM CDT	Mesoscale Discussion	SPC	Cleveland, Creek, Lincoln, Oklahoma, Pottawatomie	37 min

Nearby

Mesoscale Discussions in Oklahoma, 2013 Mesoscale Discussions in Kansas, 2013 Every mesoscale discussion in 2013

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.