Alert archive / South Dakota / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 75, NWS Aberdeen, SD

June 18, 2024Codington County, Hamlin County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 18, 2024, 4:06 PM CDT for Codington County, Hamlin County, South Dakota. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 18, 2024, 4:06 PM CDT (21:06 UTC)
Expired: Jun 18, 2024, 4:45 PM CDT
In force: 39 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Codington County, SD, Hamlin County, SD

The radar

The Aberdeen radar (KABR), 119 km from the middle of the area, began a volume at 21:09 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

Minneapolis, MN (KMPX), launched 12:00Z, 9.1 hours before the alert went out and 283 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: 1493 J/kg
Mixed-layer CIN: -220 J/kg
Mixed-layer LCL: 885 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 308 m²/s²
0-3 km storm-relative helicity: 317 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Aberdeen, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 18, 2:19 PM CDT, 1 hour 47 minutes earlier.

Area forecast discussion, Jun 18, 2:19 PM CDT, 1 hour 47 minutes before

<!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>

Hazardous weather outlook, Jun 18, 2:25 PM CDT, 1 hour 41 minutes before

<!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>

The office that day

Everything else NWS Aberdeen, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 17, 11:30 PM CDT	Severe Thunderstorm Warning	ABR	Dewey	60 min
Jun 17, 11:47 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Stanley	58 min
Jun 18, 12:09 AM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson	25 min
Jun 18, 12:36 AM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Dewey	34 min
Jun 18, 12:51 AM CDT	Special Weather Statement	ABR	Stanley	39 min
Jun 18, 12:54 AM CDT	Special Weather Statement	ABR	Dewey, Walworth	51 min
Jun 18, 2:04 AM CDT	Special Weather Statement	ABR	Brown, Campbell, Edmunds, Faulk, McPherson, Potter and 1 more	71 min
Jun 18, 2:12 AM CDT	Flash Flood Warning	ABR	Stanley	4 hr
Jun 18, 3:16 AM CDT	Special Weather Statement	ABR	Clark, Day, Marshall, Spink	59 min
Jun 18, 4:17 AM CDT	Special Weather Statement	ABR	Roberts	28 min
Jun 18, 4:33 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Grant	30 min
Jun 18, 5:02 PM CDT	Special Weather Statement	ABR	Big Stone	43 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2024 Every severe thunderstorm warning 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.