Alert archive / Utah / Mesoscale Discussions in 2012

Mesoscale Discussion 1070

June 5, 2012Bear Lake County, Idaho; 8 counties in Utah; Lincoln County, Uinta County, Wyoming

The Storm Prediction Center issued this mesoscale discussion at Jun 5, 2012, 11:46 AM MDT for Bear Lake County, Idaho; 8 counties in Utah; Lincoln County, Uinta County, Wyoming. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jun 5, 2012, 11:46 AM MDT (17:46 UTC)
Expired: Jun 5, 2012, 2:15 PM MDT
In force: 2 hr
Issued by: the Storm Prediction Center
Chance of a watch: 5%

Counties Bear Lake County, ID, Cache County, UT, Morgan County, UT, Rich County, UT, Salt Lake County, UT, Summit County, UT, Utah County, UT, Wasatch County, UT, Weber County, UT, Lincoln County, WY, Uinta County, WY

The radar

The Salt Lake City radar (KMTX), 133 km from the middle of the area, began a volume at 17:46 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

Riverton, WY (KRIW), launched 12:00Z, 5.8 hours before the alert went out and 274 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: 19 J/kg
Mixed-layer CIN: -401 J/kg
Mixed-layer LCL: 2836 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 120 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Jun 4, 7:42 PM MDT	Mesoscale Discussion	SPC	Adams, Benewah, Boise, Bonner, Boundary, Clearwater and 9 more	93 min
Jun 4, 10:08 PM MDT	Mesoscale Discussion	SPC	Clearwater, Idaho, Shoshone	67 min
Jun 5, 12:54 PM MDT	Mesoscale Discussion	SPC	Fremont, Teton	2 hr

Nearby

Mesoscale Discussions in Utah, 2012 Mesoscale Discussions in Wyoming, 2012 Mesoscale Discussions in Idaho, 2012 Every mesoscale discussion in 2012

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.