Alert archive / Texas / Mesoscale Discussions in 2023

Mesoscale Discussion 929

June 2, 202313 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 2, 2023, 11:42 PM CDT for 13 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jun 2, 2023, 11:42 PM CDT (04:42 UTC)
Expired: Jun 3, 2023, 1:45 AM CDT
In force: 2 hr
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 257

Counties Atascosa County, TX, Bexar County, TX, DeWitt County, TX, Frio County, TX, Goliad County, TX, Gonzales County, TX, Guadalupe County, TX, Karnes County, TX, La Salle County, TX, Live Oak County, TX, McMullen County, TX, Wilson County, TX, Zavala County, TX

The radar

The Austin/San Antonio radar (KEWX), 97 km from the middle of the area, began a volume at 04:43 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, 4.7 hours before the alert went out and 215 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: 2764 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1216 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 263 m²/s²
Significant tornado parameter: 3.6
Supercell composite: 16.3

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
Jun 2, 8:21 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Callahan, Clay, Haskell, Jones and 8 more	114 min
Jun 2, 9:16 PM CDT	Mesoscale Discussion	SPC	Edwards, Kinney, Real, Uvalde, Val Verde	59 min
Jun 2, 10:23 PM CDT	Severe Thunderstorm Watch	SPC	Atascosa, Bandera, Bexar, Comal, Dimmit, Frio and 7 more	4 hr
Jun 3, 1:11 PM CDT	Mesoscale Discussion	SPC	Anderson, Angelina, Bowie, Camp, Cass, Cherokee and 31 more	2 hr
Jun 3, 3:21 PM CDT	Mesoscale Discussion	SPC	Andrews, Brewster, Cochran, Coke, Concho, Crane and 35 more	114 min
Jun 3, 6:18 PM CDT	Mesoscale Discussion	SPC	Brooks, Dimmit, Duval, Hidalgo, Jim Hogg, Jim Wells and 9 more	117 min
Jun 3, 6:59 PM CDT	Severe Thunderstorm Watch	SPC	Brooks, Dimmit, Duval, Hidalgo, Jim Hogg, Jim Wells and 5 more	3 hr

Nearby

Mesoscale Discussions in Texas, 2023 Every mesoscale discussion in 2023

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.