Alert archive / Colorado / Mesoscale Discussions in 2016

Mesoscale Discussion 1433

July 28, 201613 counties in Colorado; Greeley County, Hamilton County, Kansas

The Storm Prediction Center issued this mesoscale discussion at Jul 28, 2016, 10:39 PM MDT for 13 counties in Colorado; Greeley County, Hamilton County, Kansas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jul 28, 2016, 10:39 PM MDT (04:39 UTC)
Expired: Jul 29, 2016, 12:45 AM MDT
In force: 2 hr
Issued by: the Storm Prediction Center

Counties Baca County, CO, Bent County, CO, Cheyenne County, CO, Crowley County, CO, El Paso County, CO, Elbert County, CO, Huerfano County, CO, Kiowa County, CO, Las Animas County, CO, Lincoln County, CO, Otero County, CO, Prowers County, CO, Pueblo County, CO, Greeley County, KS, Hamilton County, KS

The radar

The Pueblo radar (KPUX), 75 km from the middle of the area, began a volume at 04:40 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

Denver, CO (KDEN), launched 00:00Z, 4.7 hours before the alert went out and 205 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: 1611 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 1861 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 261 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 8.4

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
Jul 28, 7:01 PM MDT	Mesoscale Discussion	SPC	Baca, Bent, Cheyenne, Crowley, El Paso, Kiowa and 5 more	59 min
Jul 28, 7:33 PM MDT	Severe Thunderstorm Watch	SPC	Baca, Bent, Cheyenne, Crowley, El Paso, Kiowa and 4 more	4 hr
Jul 29, 12:34 PM MDT	Mesoscale Discussion	SPC	Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 7 more	116 min
Jul 29, 1:08 PM MDT	Severe Thunderstorm Watch	SPC	Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 11 more	9 hr
Jul 29, 2:42 PM MDT	Mesoscale Discussion	SPC	Huerfano, Las Animas, Otero, Pueblo	2 hr
Jul 29, 5:27 PM MDT	Mesoscale Discussion	SPC	Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 13 more	108 min
Jul 28, 7:16 PM MDT	Mesoscale Discussion	SPC	Allen, Anderson, Butler, Chase, Chautauqua, Coffey and 23 more	89 min

Nearby

Mesoscale Discussions in Colorado, 2016 Mesoscale Discussions in Kansas, 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.