Alert archive / Texas / Mesoscale Discussions in 2024

Mesoscale Discussion 620

May 3, 202411 counties in Oklahoma; 21 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 3, 2024, 7:27 PM CDT for 11 counties in Oklahoma; 21 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 3, 2024, 7:27 PM CDT (00:27 UTC)
Expired
May 3, 2024, 9:30 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
Concerning
Severe potential...watch possible
Chance of a watch
40%
All 32 counties

Carter County, OK, Comanche County, OK, Cotton County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Jefferson County, OK, Kiowa County, OK, Love County, OK, Stephens County, OK, Tillman County, OK, Archer County, TX, Baylor County, TX, Childress County, TX, Clay County, TX, Cooke County, TX, Cottle County, TX, Foard County, TX, Hall County, TX, Hardeman County, TX, Jack County, TX, King County, TX, Knox County, TX, Montague County, TX, Motley County, TX, Palo Pinto County, TX, Parker County, TX, Throckmorton County, TX, Wichita County, TX, Wilbarger County, TX, Wise County, TX, Young County, TX

The radar

The Altus AFB radar (KFDR), 38 km from the middle of the area, began a volume at 00:27 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

Amarillo Airport, TX (KAMA), launched 00:00Z, 0.5 hours before the alert went out and 294 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, Amarillo Airport, TX at 00:00Z on 2024-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1049 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, Amarillo Airport, TX at 00:00Z on 2024-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 141 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
1049 J/kg
Mixed-layer CIN
-233 J/kg
Mixed-layer LCL
1051 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
141 m²/s²
0-3 km storm-relative helicity
293 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.2

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 3, 8:28 PM CDTMesoscale DiscussionSPCBeaver, Harper, Texas2 hr
May 3, 9:26 PM CDTMesoscale DiscussionSPCAlfalfa, Dewey, Ellis, Roger Mills, Woods, Woodward2 hr
May 3, 9:47 PM CDTSevere Thunderstorm WatchSPCAlfalfa, Blaine, Canadian, Custer, Dewey, Ellis and 10 more6 hr
May 3, 11:41 PM CDTMesoscale DiscussionSPCAlfalfa, Blaine, Custer, Dewey, Kingfisher, Major and 1 more94 min
May 4, 10:49 AM CDTMesoscale DiscussionSPCAdair, Atoka, Cherokee, Choctaw, Coal, Haskell and 11 more116 min
May 4, 3:53 PM CDTMesoscale DiscussionSPCAdair, Atoka, Cherokee, Coal, Haskell, Hughes and 8 more97 min
May 3, 9:38 PM CDTMesoscale DiscussionSPCKerr, Kimble, Real2 hr
May 4, 12:36 PM CDTMesoscale DiscussionSPCAndrews, Borden, Brewster, Callahan, Coke, Coleman and 38 more2 hr
May 4, 1:34 PM CDTSevere Thunderstorm WatchSPCAndrews, Borden, Brown, Callahan, Coke, Coleman and 26 more10 hr
May 4, 2:32 PM CDTTornado WatchSPCBrewster, Concho, Crane, Crockett, Irion, McCulloch and 11 more9 hr
May 4, 3:47 PM CDTMesoscale DiscussionSPCAndrews, Brown, Callahan, Coke, Coleman, Concho and 27 more118 min
May 4, 6:31 PM CDTMesoscale DiscussionSPCBandera, Bell, Blanco, Brown, Burnet, Caldwell and 37 more119 min

Nearby

Mesoscale Discussions in Texas, 2024Mesoscale Discussions in Oklahoma, 2024Every mesoscale discussion in 2024

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.