Alert archive / Ohio / Mesoscale Discussions in 2019

Mesoscale Discussion 844

May 28, 201911 counties in Ohio; 5 counties in West Virginia

The Storm Prediction Center issued this mesoscale discussion at May 28, 2019, 2:03 AM EDT for 11 counties in Ohio; 5 counties in West Virginia. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued: May 28, 2019, 2:03 AM EDT (06:03 UTC)
Expired: May 28, 2019, 4:00 AM EDT
In force: 117 min
Issued by: the Storm Prediction Center

Counties Athens County, OH, Belmont County, OH, Guernsey County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Vinton County, OH, Washington County, OH, Pleasants County, WV, Ritchie County, WV, Tyler County, WV, Wirt County, WV, Wood County, WV

The radar

The Charleston,WV radar (KRLX), 119 km from the middle of the area, began a volume at 06:07 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 6.1 hours before the alert went out and 163 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: 594 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 1244 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 146 m²/s²
0-3 km storm-relative helicity: 197 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.9

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
May 27, 8:20 PM EDT	Tornado Watch	SPC	Allen, Auglaize, Champaign, Clark, Crawford, Darke and 26 more	6 hr
May 27, 9:08 PM EDT	Mesoscale Discussion	SPC	Allen, Auglaize, Champaign, Clark, Darke, Delaware and 15 more	97 min
May 27, 11:32 PM EDT	Mesoscale Discussion	SPC	Athens, Champaign, Clark, Clinton, Coshocton, Delaware and 26 more	88 min
May 28, 12:08 AM EDT	Tornado Watch	SPC	Athens, Belmont, Guernsey, Meigs, Monroe, Morgan and 5 more	4 hr
May 28, 12:16 PM EDT	Mesoscale Discussion	SPC	Allen, Ashland, Auglaize, Carroll, Champaign, Columbiana and 48 more	119 min
May 28, 1:22 PM EDT	Severe Thunderstorm Watch	SPC	Allen, Ashland, Ashtabula, Auglaize, Champaign, Crawford and 38 more	7 hr
May 28, 1:48 PM EDT	Tornado Watch	SPC	Carroll, Columbiana, Harrison, Jefferson, Tuscarawas	8 hr
May 28, 3:24 PM EDT	Mesoscale Discussion	SPC	Allen, Ashland, Ashtabula, Auglaize, Carroll, Champaign and 41 more	2 hr
May 28, 7:13 PM EDT	Mesoscale Discussion	SPC	Allen, Ashland, Auglaize, Columbiana, Crawford, Cuyahoga and 31 more	92 min
May 28, 1:02 PM EDT	Mesoscale Discussion	SPC	Berkeley, Morgan	118 min
May 28, 4:43 PM EDT	Mesoscale Discussion	SPC	Brooke, Hancock	2 hr

Nearby

Mesoscale Discussions in Ohio, 2019 Mesoscale Discussions in West Virginia, 2019 Every mesoscale discussion in 2019

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.