Alert archive / South Dakota / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 209, NWS Aberdeen, SD

August 9, 2020Clark County, Codington County, Hamlin County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Aug 9, 2020, 2:00 AM CDT for Clark County, Codington County, Hamlin County, South Dakota. It was in force for 17 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
Aug 9, 2020, 2:00 AM CDT (07:00 UTC)
Expired
Aug 9, 2020, 2:17 AM CDT
In force
17 min
Issued by
NWS Aberdeen, SD
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Clark County, SD, Codington County, SD, Hamlin County, SD

The radar

The Aberdeen radar (KABR), 107 km from the middle of the area, began a volume at 07:00 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.

IssuedProductOfficeLasted
Aug 8, 10:10 PM CDTSevere Thunderstorm WatchSPC6 hr

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 Aug 8, 8:18 PM CDT, 5 hours 42 minutes earlier.

Area forecast discussion, Aug 8, 8:18 PM CDT, 5 hours 42 minutes before
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Hazardous weather outlook, Aug 8, 12:41 PM CDT, 13 hours 19 minutes before
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In the hours before

Special weather statement, Aug 8, 10:20 PM CDT, 3 hours 40 minutes before
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Special weather statement, Aug 9, 12:01 AM CDT, 1 hour 59 minutes before
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<body>
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    <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">
        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Aug 9, 1:06 AM CDT, 54 minutes before
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      <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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Local storm report, Aug 9, 1:21 AM CDT, 39 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.

IssuedProductOfficeCountiesLasted
Aug 8, 10:20 PM CDTSpecial Weather StatementABRJones40 min
Aug 8, 11:22 PM CDTSevere Thunderstorm WarningABRLyman38 min
Aug 9, 12:01 AM CDTSpecial Weather StatementABRBuffalo29 min
Aug 9, 12:29 AM CDTSevere Thunderstorm WarningABRBuffalo, Hand, Hughes, Hyde, Lyman46 min
Aug 9, 1:07 AM CDTSevere Thunderstorm WarningABRBuffalo, Hand, Hyde38 min
Aug 9, 1:46 AM CDTSevere Thunderstorm WarningABRHand, Spink24 min
Aug 9, 2:49 AM CDTSpecial Weather StatementABRDeuel, Grant, Hamlin41 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2020Every severe thunderstorm warning in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.