Alert archive / South Dakota / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 4, NWS Aberdeen, SD

May 17, 2024Brown County, Edmunds County, McPherson County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at May 17, 2024, 9:08 PM CDT for Brown County, Edmunds County, McPherson County, South Dakota. It was in force for 52 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: May 17, 2024, 9:08 PM CDT (02:08 UTC)
Expired: May 17, 2024, 10:00 PM CDT
In force: 52 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Brown County, SD, Edmunds County, SD, McPherson County, SD

The radar

The Aberdeen radar (KABR), 43 km from the middle of the area, began a volume at 02:11 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 17, 5:33 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 2.1 hours before the alert went out and 189 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: 11 J/kg
Mixed-layer CIN: -200 J/kg
Mixed-layer LCL: 1852 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 165 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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.

In the hours before

Local storm report, May 17, 8:37 PM CDT, 31 minutes before

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Local storm report, May 17, 8:44 PM CDT, 24 minutes before

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Local storm report, May 17, 8:52 PM CDT, 16 minutes before

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Local storm report, May 17, 8:53 PM CDT, 15 minutes before

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      <div class="status" id="status">Temporary Notice</div>
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Local storm report, May 17, 8:56 PM CDT, 12 minutes before

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  <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.
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      <p id="message2">
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Local storm report, May 17, 8:59 PM CDT, 9 minutes before

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<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>
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The office that day

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

Issued	Product	Office	Counties	Lasted
May 17, 7:45 PM CDT	Special Weather Statement	ABR	Campbell, Walworth	45 min
May 17, 8:32 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Edmunds, McPherson, Walworth	58 min
May 17, 9:34 PM CDT	Special Weather Statement	ABR	Stanley	26 min
May 17, 9:49 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Day, Marshall	41 min
May 18, 12:21 AM CDT	Special Weather Statement	ABR	McPherson	24 min
May 18, 12:40 AM CDT	Severe Thunderstorm Warning	ABR	Edmunds, McPherson	35 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.