Alert archive / Texas / Mesoscale Discussions in 2008

Mesoscale Discussion 805

May 6, 200810 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 6, 2008, 11:35 PM CDT for 10 counties in Texas. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued: May 6, 2008, 11:35 PM CDT (04:35 UTC)
Expired: May 7, 2008, 1:00 AM CDT
In force: 85 min
Issued by: the Storm Prediction Center

Counties Bandera County, TX, Edwards County, TX, Gillespie County, TX, Kerr County, TX, Kinney County, TX, Maverick County, TX, Medina County, TX, Real County, TX, Uvalde County, TX, Zavala County, TX

The radar

The Laughlin AFB radar (KDFX), 43 km from the middle of the area, began a volume at 04:34 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

Del Rio, TX (KDRT), launched 00:00Z, 4.6 hours before the alert went out and 84 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: 1867 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 1375 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 193 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 8.0

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 6, 8:50 PM CDT	Mesoscale Discussion	SPC	Andrews, Armstrong, Bailey, Baylor, Borden, Briscoe and 84 more	85 min
May 6, 9:51 PM CDT	Severe Thunderstorm Watch	SPC	Andrews, Armstrong, Bailey, Baylor, Borden, Briscoe and 58 more	7 hr
May 7, 12:04 AM CDT	Mesoscale Discussion	SPC	Andrews, Armstrong, Bailey, Baylor, Borden, Briscoe and 56 more	86 min
May 7, 2:47 AM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Briscoe, Childress, Clay, Collingsworth and 21 more	58 min
May 7, 11:59 AM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Borden, Callahan, Cottle, Crosby and 29 more	91 min
May 7, 1:17 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Borden, Callahan, Cottle, Crosby and 29 more	88 min
May 7, 1:33 PM CDT	Tornado Watch	SPC	Clay, Collin, Cooke, Dallas, Delta, Denton and 13 more	6 hr
May 7, 3:13 PM CDT	Mesoscale Discussion	SPC	Anderson, Bastrop, Bell, Bosque, Collin, Cooke and 35 more	2 hr
May 7, 3:42 PM CDT	Tornado Watch	SPC	Anderson, Bell, Ellis, Falls, Freestone, Henderson and 9 more	6 hr
May 7, 4:47 PM CDT	Mesoscale Discussion	SPC	Angelina, Bowie, Camp, Cass, Cherokee, Gregg and 14 more	88 min
May 7, 5:28 PM CDT	Tornado Watch	SPC	Angelina, Bowie, Camp, Cass, Cherokee, Franklin and 18 more	8 hr
May 7, 6:35 PM CDT	Mesoscale Discussion	SPC	Anderson, Brazos, Delta, Fannin, Freestone, Grayson and 12 more	55 min

Nearby

Mesoscale Discussions in Texas, 2008 Every mesoscale discussion in 2008

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.