Alert archive / Ohio / Mesoscale Discussions in 2016

Mesoscale Discussion 1587

August 24, 2016Delaware County, Randolph County, Indiana; 12 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Aug 24, 2016, 10:48 PM EDT for Delaware County, Randolph County, Indiana; 12 counties in Ohio. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued: Aug 24, 2016, 10:48 PM EDT (02:48 UTC)
Expired: Aug 25, 2016, 12:45 AM EDT
In force: 117 min
Issued by: the Storm Prediction Center
Chance of a watch: 5%

Counties Delaware County, IN, Randolph County, IN, Auglaize County, OH, Champaign County, OH, Darke County, OH, Hardin County, OH, Logan County, OH, Marion County, OH, Miami County, OH, Sandusky County, OH, Seneca County, OH, Shelby County, OH, Union County, OH, Wyandot County, OH

The radar

The Cincinnati radar (KILN), 129 km from the middle of the area, began a volume at 02:49 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

Detroit, MI (KDTX), launched 00:00Z, 2.8 hours before the alert went out and 243 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: 983 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 724 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 126 m²/s²
0-3 km storm-relative helicity: 185 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.6

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
Aug 24, 8:18 PM EDT	Mesoscale Discussion	SPC	Adams, Allen, Bartholomew, Blackford, Boone, Brown and 27 more	57 min
Aug 25, 5:42 PM EDT	Mesoscale Discussion	SPC	Ashland, Ashtabula, Belmont, Carroll, Columbiana, Coshocton and 26 more	93 min

Nearby

Mesoscale Discussions in Ohio, 2016 Mesoscale Discussions in Indiana, 2016 Every mesoscale discussion in 2016

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.