Alert archive / Texas / Mesoscale Discussions in 2019

Mesoscale Discussion 908

May 30, 20197 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 30, 2019, 8:23 PM CDT for 7 counties in Texas. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued: May 30, 2019, 8:23 PM CDT (01:23 UTC)
Expired: May 30, 2019, 10:00 PM CDT
In force: 97 min
Issued by: the Storm Prediction Center

Counties Dimmit County, TX, Edwards County, TX, Kinney County, TX, Maverick County, TX, Real County, TX, Uvalde County, TX, Zavala County, TX

The radar

The Laughlin AFB radar (KDFX), 58 km from the middle of the area, began a volume at 01:23 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 (KDLF), launched 00:00Z, 1.4 hours before the alert went out and 66 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: 2182 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 1493 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 90 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.0

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
May 31, 1:11 PM CDT	Mesoscale Discussion	SPC	Austin, Brazos, Chambers, Fort Bend, Grimes, Hardin and 12 more	2 hr
May 31, 2:33 PM CDT	Mesoscale Discussion	SPC	Brewster, Culberson, Jeff Davis, Loving, Pecos, Reeves and 1 more	117 min
May 31, 3:28 PM CDT	Severe Thunderstorm Watch	SPC	Brewster, Culberson, Hudspeth, Jeff Davis, Loving, Pecos and 4 more	9 hr
May 31, 5:28 PM CDT	Mesoscale Discussion	SPC	Brewster, Jeff Davis, Pecos, Presidio, Terrell	92 min

Nearby

Mesoscale Discussions in Texas, 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.