Alert archive / Arkansas / Mesoscale Discussions in 2026

Mesoscale Discussion 461

April 15, 20266 counties in Arkansas

The Storm Prediction Center issued this mesoscale discussion at Apr 15, 2026, 10:44 PM CDT for 6 counties in Arkansas. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued: Apr 15, 2026, 10:44 PM CDT (03:44 UTC)
Expired: Apr 16, 2026, 12:15 AM CDT
In force: 91 min
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 126

Counties Conway County, AR, Perry County, AR, Pope County, AR, Searcy County, AR, Van Buren County, AR, Yell County, AR

The radar

The Little Rock radar (KLZK), 87 km from the middle of the area, began a volume at 03:44 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

Springfield, MO (KSGF), launched 00:00Z, 3.7 hours before the alert went out and 184 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: 825 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 668 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 333 m²/s²
0-3 km storm-relative helicity: 372 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 11.3

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
Apr 15, 8:34 PM CDT	Mesoscale Discussion	SPC	Boone, Carroll, Crawford, Franklin, Johnson, Logan and 4 more	86 min
Apr 15, 10:02 PM CDT	Severe Thunderstorm Watch	SPC	Conway, Johnson, Logan, Newton, Perry, Pope and 4 more	2 hr
Apr 16, 11:11 AM CDT	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Clay, Cleburne and 27 more	94 min
Apr 16, 2:03 PM CDT	Severe Thunderstorm Watch	SPC	Baxter, Boone, Carroll, Clay, Cleburne, Conway and 31 more	7 hr
Apr 16, 3:22 PM CDT	Mesoscale Discussion	SPC	Baxter, Boone, Carroll, Clay, Fulton, Greene and 7 more	113 min
Apr 16, 3:40 PM CDT	Mesoscale Discussion	SPC	Conway, Crawford, Franklin, Garland, Hot Spring, Howard and 14 more	2 hr

Nearby

Mesoscale Discussions in Arkansas, 2026 Every mesoscale discussion in 2026

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.