Alert archive / Texas / Mesoscale Discussions in 2019

Mesoscale Discussion 1850

August 24, 2019Beaver County, Cimarron County, Texas County, Oklahoma; 10 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Aug 24, 2019, 9:09 PM CDT for Beaver County, Cimarron County, Texas County, Oklahoma; 10 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Aug 24, 2019, 9:09 PM CDT (02:09 UTC)
Expired: Aug 24, 2019, 11:15 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

Counties Beaver County, OK, Cimarron County, OK, Texas County, OK, Dallam County, TX, Hansford County, TX, Hartley County, TX, Hemphill County, TX, Hutchinson County, TX, Lipscomb County, TX, Moore County, TX, Ochiltree County, TX, Roberts County, TX, Sherman County, TX

The radar

The Amarillo radar (KAMA), 129 km from the middle of the area, began a volume at 02:09 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

Dodge City, (KDDC), launched 00:00Z, 2.2 hours before the alert went out and 227 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: 1331 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 1409 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 216 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.2

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, 10:45 PM CDT	Mesoscale Discussion	SPC	Alfalfa, Garfield, Harper, Major, Woods, Woodward	2 hr
Aug 24, 11:04 PM CDT	Mesoscale Discussion	SPC	Kay	116 min
Aug 25, 1:32 AM CDT	Mesoscale Discussion	SPC	Alfalfa, Garfield, Grant, Kay, Major, Noble and 5 more	88 min
Aug 25, 3:20 AM CDT	Mesoscale Discussion	SPC	Alfalfa, Garfield, Grant, Kay, Noble, Osage and 1 more	55 min
Aug 25, 4:40 AM CDT	Mesoscale Discussion	SPC	Alfalfa, Grant, Kay, Osage, Woods	65 min
Aug 25, 6:36 AM CDT	Mesoscale Discussion	SPC	Blaine, Caddo, Canadian, Custer, Dewey, Garfield and 5 more	114 min

Nearby

Mesoscale Discussions in Texas, 2019 Mesoscale Discussions in Oklahoma, 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.