Alert archive / Texas / Mesoscale Discussions in 2022

Mesoscale Discussion 413

April 5, 202219 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 5, 2022, 2:37 PM CDT for 19 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Apr 5, 2022, 2:37 PM CDT (19:37 UTC)
Expired: Apr 5, 2022, 5:00 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch unlikely
Chance of a watch: 20%

Counties Atascosa County, TX, Bee County, TX, Bexar County, TX, DeWitt County, TX, Dimmit County, TX, Duval County, TX, Frio County, TX, Goliad County, TX, Jim Wells County, TX, Karnes County, TX, La Salle County, TX, Live Oak County, TX, Maverick County, TX, McMullen County, TX, Medina County, TX, San Patricio County, TX, Webb County, TX, Wilson County, TX, Zavala County, TX

The radar

The Corpus Christi radar (KCRP), 148 km from the middle of the area, began a volume at 19:37 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

Corpus Christi, TX (KCRP), launched 12:00Z, 7.6 hours before the alert went out and 166 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: 1444 J/kg
Mixed-layer CIN: -207 J/kg
Mixed-layer LCL: 697 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: -10 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

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
Apr 4, 7:24 PM CDT	Tornado Watch	SPC	Collin, Dallas, Delta, Denton, Ellis, Fannin and 12 more	7 hr
Apr 4, 7:40 PM CDT	Mesoscale Discussion	SPC	Cooke, Wise	65 min
Apr 4, 9:18 PM CDT	Mesoscale Discussion	SPC	Collin, Delta, Hopkins, Hunt, Rains, Rockwall	117 min
Apr 4, 10:20 PM CDT	Mesoscale Discussion	SPC	Camp, Cass, Franklin, Gregg, Harrison, Marion and 5 more	55 min
Apr 4, 10:51 PM CDT	Tornado Watch	SPC	Bowie, Camp, Cass, Cherokee, Franklin, Gregg and 12 more	5 hr
Apr 4, 11:26 PM CDT	Mesoscale Discussion	SPC	Dallas, Ellis, Hopkins, Hunt, Johnson, Kaufman and 4 more	2 hr

Nearby

Mesoscale Discussions in Texas, 2022 Every mesoscale discussion in 2022

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.