Alert archive / Texas / Mesoscale Discussions in 2019

Mesoscale Discussion 1239

June 24, 201927 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 24, 2019, 6:47 PM CDT for 27 counties in Texas. It was in force for 58 min.

The area

The outline as issued.

The facts

Issued
Jun 24, 2019, 6:47 PM CDT (23:47 UTC)
Expired
Jun 24, 2019, 7:45 PM CDT
In force
58 min
Issued by
the Storm Prediction Center
All 27 counties

Atascosa County, TX, Bee County, TX, Bexar County, TX, Brooks County, TX, Cameron County, TX, Dimmit County, TX, Duval County, TX, Frio County, TX, Goliad County, TX, Hidalgo County, TX, Jim Hogg County, TX, Jim Wells County, TX, Karnes County, TX, Kenedy County, TX, Kleberg County, TX, La Salle County, TX, Live Oak County, TX, McMullen County, TX, Medina County, TX, Nueces County, TX, San Patricio County, TX, Starr County, TX, Webb County, TX, Willacy County, TX, Wilson County, TX, Zapata County, TX, Zavala County, TX

The radar

The Corpus Christi radar (KCRP), 66 km from the middle of the area, began a volume at 23:50 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, 11.8 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-pSkew-T log-p diagram, Corpus Christi, TX at 12:00Z on 2019-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3165 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 12:00Z on 2019-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 50 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
3165 J/kg
Mixed-layer CIN
-52 J/kg
Mixed-layer LCL
671 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
50 m²/s²
0-3 km storm-relative helicity
152 m²/s²
Significant tornado parameter
1.5
Supercell composite
8.9

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.

IssuedProductOfficeCountiesLasted
Jun 23, 7:23 PM CDTMesoscale DiscussionSPCArcher, Brown, Callahan, Clay, Coleman, Collin and 23 more97 min
Jun 23, 9:41 PM CDTSevere Thunderstorm WatchSPCAnderson, Bell, Bosque, Brazos, Brown, Burleson and 38 more6 hr
Jun 24, 1:32 AM CDTMesoscale DiscussionSPCAnderson, Bell, Bosque, Brazos, Burnet, Coryell and 15 more88 min
Jun 24, 2:53 PM CDTMesoscale DiscussionSPCBorden, Callahan, Coke, Coleman, Concho, Crockett and 24 more2 hr
Jun 24, 3:13 PM CDTSevere Thunderstorm WatchSPCBorden, Brown, Callahan, Coke, Coleman, Concho and 36 more8 hr
Jun 24, 5:24 PM CDTMesoscale DiscussionSPCAtascosa, Bee, Bexar, Brooks, Cameron, Dimmit and 21 more66 min

Nearby

Mesoscale Discussions in Texas, 2019Every 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.