Alert archive / Texas / Mesoscale Discussions in 2015

Mesoscale Discussion 514

May 5, 201529 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 5, 2015, 9:56 PM CDT for 29 counties in Texas. It was in force for 94 min.

The area

The outline as issued.

The facts

Issued: May 5, 2015, 9:56 PM CDT (02:56 UTC)
Expired: May 5, 2015, 11:30 PM CDT
In force: 94 min
Issued by: the Storm Prediction Center

All 29 counties

Borden County, TX, Callahan County, TX, Coke County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Fisher County, TX, Floyd County, TX, Foard County, TX, Garza County, TX, Glasscock County, TX, Hall County, TX, Hardeman County, TX, Haskell County, TX, Howard County, TX, Jones County, TX, Kent County, TX, King County, TX, Knox County, TX, Mitchell County, TX, Motley County, TX, Nolan County, TX, Runnels County, TX, Scurry County, TX, Shackelford County, TX, Sterling County, TX, Stonewall County, TX, Taylor County, TX, Tom Green County, TX

The radar

The Lubbock radar (KLBB), 124 km from the middle of the area, began a volume at 02:59 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

Midland Regional, TX (KMAF), launched 00:00Z, 2.9 hours before the alert went out and 211 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: 20 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 2898 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 119 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
May 5, 7:41 PM CDT	Mesoscale Discussion	SPC	Borden, Briscoe, Childress, Cottle, Crosby, Dickens and 15 more	2 hr
May 5, 8:07 PM CDT	Tornado Watch	SPC	Coke, Cottle, Crosby, Dickens, Fisher, Foard and 14 more	4 hr
May 6, 1:03 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Childress, Clay, Cottle, Dickens and 17 more	117 min
May 6, 1:23 PM CDT	Tornado Watch	SPC	Archer, Baylor, Callahan, Clay, Eastland, Foard and 16 more	8 hr
May 6, 1:46 PM CDT	Mesoscale Discussion	SPC	Brown, Callahan, Coke, Coleman, Concho, Crockett and 22 more	119 min
May 6, 3:00 PM CDT	Tornado Watch	SPC	Brown, Coke, Coleman, Concho, Crockett, Fisher and 12 more	7 hr
May 6, 3:27 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Clay, Foard, Hardeman, Haskell and 8 more	2 hr
May 6, 5:25 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Clay, Foard, Hardeman, Haskell and 13 more	2 hr
May 6, 6:34 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Clay, Cooke, Foard, Hardeman and 13 more	86 min

Nearby

Mesoscale Discussions in Texas, 2015 Every mesoscale discussion in 2015

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.