Alert archive / South Dakota / Special Weather Statements in 2017

Special Weather Statement, NWS Aberdeen, SD

August 5, 2017Corson County, South Dakota

NWS Aberdeen, SD issued this special weather statement at Aug 5, 2017, 7:19 PM MDT for Corson County, South Dakota. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 5, 2017, 7:19 PM MDT (01:19 UTC)
Expired: Aug 5, 2017, 7:45 PM MDT
In force: 26 min
Issued by: NWS Aberdeen, SD

County Corson County, SD

The radar

The Bismarck radar (KBIS), 157 km from the middle of the area, began a volume at 01:22 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

Aberdeen, SD (KABR), launched 00:00Z, 1.3 hours before the alert went out and 281 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1403 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 70 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 5, 5:30 PM MDT, 1 hour 49 minutes earlier.

Area forecast discussion, Aug 5, 5:30 PM MDT, 1 hour 49 minutes before

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<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>
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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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Hazardous weather outlook, Aug 5, 3:24 AM MDT, 15 hours 55 minutes before

Hazardous Weather Outlook
National Weather Service Aberdeen SD
424 AM CDT Sat Aug 5 2017

MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-060930-
Traverse-Big Stone-Corson-Campbell-McPherson-Brown-Marshall-
Roberts-Walworth-Edmunds-Day-Dewey-Potter-Faulk-Spink-Clark-
Codington-Grant-Hamlin-Deuel-Stanley-Sully-Hughes-Hyde-Hand-Jones-
Lyman-Buffalo-
424 AM CDT Sat Aug 5 2017 /324 AM MDT Sat Aug 5 2017/

This Hazardous Weather Outlook is for portions of west central
Minnesota, central South Dakota, north central South Dakota, and
northeast South Dakota.

.DAY ONE...Today and Tonight

Thunderstorms are possible today through tonight. Small hail and
gusty winds will accompany some thunderstorms.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Thunderstorms are possible Sunday and Sunday night. Lightning will
be the main threat.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated today.

SD

In the hours before

Special weather statement, Aug 5, 6:14 PM MDT, 1 hour 5 minutes before

Special Weather Statement
National Weather Service Aberdeen SD
614 PM MDT SAT AUG 5 2017

SDZ003-060100-
Corson SD-
614 PM MDT SAT AUG 5 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CORSON COUNTY UNTIL
700 PM MDT...

At 614 PM MDT, Doppler radar was tracking a strong thunderstorm near
Thunder Hawk, or 8 miles southeast of Lemmon, moving south at 25 mph.

Nickel size hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Thunder Hawk.

LAT...LON 4594 10200 4594 10196 4567 10170 4562 10200
TIME...MOT...LOC 0014Z 341DEG 21KT 4587 10203

Serr

Special weather statement, Aug 5, 7:19 PM MDT, 0 minutes before

Special Weather Statement
National Weather Service Aberdeen SD
719 PM MDT SAT AUG 5 2017

SDZ003-060145-
Corson SD-
719 PM MDT SAT AUG 5 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN CORSON COUNTY UNTIL
745 PM MDT...

At 719 PM MDT, Doppler radar was tracking a strong thunderstorm over
Shambo Ranch, or 31 miles southeast of Lemmon, moving south at 25
mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Shambo Ranch.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 4562 10200 4569 10178 4547 10149 4547 10200
TIME...MOT...LOC 0119Z 337DEG 24KT 4552 10188

Vipond

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 6:14 PM MDT	Special Weather Statement	ABR	Corson	46 min
Aug 5, 8:49 PM MDT	Special Weather Statement	ABR	Campbell	41 min
Aug 5, 9:21 PM MDT	Special Weather Statement	ABR	Walworth	39 min
Aug 5, 10:22 PM MDT	Special Weather Statement	ABR	Dewey	53 min
Aug 6, 7:44 AM MDT	Special Weather Statement	ABR	Stanley	46 min
Aug 6, 3:05 PM MDT	Special Weather Statement	ABR	Jones	40 min

Nearby

Special Weather Statements in South Dakota, 2017 Every special weather statement in 2017

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.