Alert archive / Texas / Mesoscale Discussions in 2019

Mesoscale Discussion 569

May 7, 20199 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 7, 2019, 1:39 PM CDT for 9 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 7, 2019, 1:39 PM CDT (18:39 UTC)
Expired
May 7, 2019, 3:45 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
Chance of a watch
60%

Counties Andrews County, TX, Crane County, TX, Ector County, TX, Howard County, TX, Martin County, TX, Midland County, TX, Pecos County, TX, Upton County, TX, Ward County, TX

The radar

The Midland/Odessa radar (KMAF), 76 km from the middle of the area, began a volume at 18:39 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 6.7 hours before the alert went out and 75 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, Midland Regional, TX at 12:00Z on 2019-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 534 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, Midland Regional, TX at 12:00Z on 2019-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -58 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
534 J/kg
Mixed-layer CIN
-293 J/kg
Mixed-layer LCL
1121 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-58 m²/s²
0-3 km storm-relative helicity
-11 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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.

IssuedProductOfficeCountiesLasted
May 7, 11:04 AM CDTMesoscale DiscussionSPCCarson, Dallam, Hansford, Hartley, Hutchinson, Lipscomb and 6 more116 min
May 7, 1:28 PM CDTTornado WatchSPCArmstrong, Carson, Collingsworth, Deaf Smith, Donley, Gray and 13 more9 hr
May 7, 2:22 PM CDTMesoscale DiscussionSPCBailey, Briscoe, Castro, Cochran, Crosby, Dawson and 12 more83 min
May 7, 3:00 PM CDTTornado WatchSPCAndrews, Bailey, Borden, Briscoe, Castro, Childress and 43 more8 hr
May 7, 3:41 PM CDTMesoscale DiscussionSPCArmstrong, Briscoe, Carson, Collingsworth, Donley, Gray and 11 more94 min
May 7, 4:47 PM CDTTornado WatchSPCDallam5 hr
May 7, 5:01 PM CDTMesoscale DiscussionSPCAndrews, Borden, Coke, Crane, Crockett, Dawson and 23 more89 min
May 7, 5:36 PM CDTMesoscale DiscussionSPCArmstrong, Briscoe, Carson, Castro, Childress, Collingsworth and 19 more54 min
May 7, 5:38 PM CDTTornado WatchSPCBaylor, Foard, Hardeman, Knox, Wilbarger4 hr

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.