Alert archive / South Dakota / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 1, NWS Sioux Falls, SD

April 16, 2024Clay County, Turner County, Yankton County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Apr 16, 2024, 9:50 AM CDT for Clay County, Turner County, Yankton County, South Dakota. It was in force for 25 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: Apr 16, 2024, 9:50 AM CDT (14:50 UTC)
Expired: Apr 16, 2024, 10:15 AM CDT
In force: 25 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Clay County, SD, Turner County, SD, Yankton County, SD

The radar

The Sioux Falls radar (KFSD), 67 km from the middle of the area, began a volume at 14:51 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

Omaha, NE (KOAX), launched 12:00Z, 2.8 hours before the alert went out and 206 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: 852 J/kg
Mixed-layer CIN: -86 J/kg
Mixed-layer LCL: 1959 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 211 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.0

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 Sioux Falls, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 16, 9:05 AM CDT, 45 minutes earlier.

Area forecast discussion, Apr 16, 9:05 AM CDT, 45 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, Apr 16, 4:22 AM CDT, 5 hours 28 minutes before

Hazardous Weather Outlook
National Weather Service Sioux Falls SD
422 AM CDT Tue Apr 16 2024

IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097-
098-NEZ013-014-SDZ038>040-050-052>071-170930-
Lyon-Osceola-Dickinson-Sioux-O'Brien-Clay-Plymouth-Cherokee-
Buena Vista-Woodbury-Ida-Lincoln-Murray-Cottonwood-Nobles-Jackson-
Pipestone-Rock-Dixon-Dakota-Beadle-Kingsbury-Brookings-Gregory-
Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-Davison-Hanson-McCook-
Minnehaha-Charles Mix-Douglas-Hutchinson-Turner-Bon Homme-Yankton-
Union-
422 AM CDT Tue Apr 16 2024

This Hazardous Weather Outlook is for northwest Iowa, west central
Iowa, southwest Minnesota, northeast Nebraska, central South
Dakota, east central South Dakota, south central South Dakota and
southeast South Dakota.

.DAY ONE...Today and tonight.

A strong low pressure system is bringing showers and thunderstorms
to the region. Some of these storms may be strong to severe, with the
greatest threat being large hail up to half dollar and damaging wind
gusts. Rain rates of 1 to 2 inches per hour are possible under
stronger storms, which may result in brief urban flash flooding and
ponding in low laying areas. Showers and thunderstorms continue
through Tuesday afternoon before a brief lull when the dry slot
passes over the region. Lighter showers will redevelop on the
backside of the low pressure and continue through early Wednesday
morning.

In addition, strong easterly winds sustained at 20-30 mph with gusts
45-55 mph are occurring and will continue through Tuesday afternoon.
A Wind Advisory is in effect until 7 pm tonight.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Rain tapers off but winds remain strong through Wednesday afternoon.
Thursday brings another chance for rain, but confidence is low on
exact timing due to high variance in guidance. Cooler and dry for
the weekend.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Apr 16, 8:48 AM CDT, 1 hour 2 minutes before

Preliminary Local Storm Report
National Weather Service Sioux Falls SD
848 AM CDT Tue Apr 16 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 AM     Rain             Remsen                  42.81N 95.98W
04/16/2024  M2.66 Inch       Plymouth           IA   CO-OP Observer

            CO-OP Observer station RMSI4 Remsen.
            Rainfall so far for this event.

0818 AM     Rain             2 E Dixon               43.39N 99.44W
04/16/2024  M2.41 Inch       Gregory            SD   Mesonet

            Mesonet station 283 SD RWIS Dixon.
            Rainfall so far for this event.

0700 AM     Rain             3 W North Sioux City    42.53N 96.57W
04/16/2024  M2.37 Inch       Union              SD   Cocorahs

            Cocorahs station SD-UN-14 Jefferson 4.9 S.
            Rainfall so far for this event.

0700 AM     Rain             4 S Concord             42.32N 96.98W
04/16/2024  M2.34 Inch       Dixon              NE   Cocorahs

            Cocorahs station DIXO4219 Concord 4.23 S.
            Rainfall so far for this event.

0817 AM     Rain             3 SE Jefferson          42.57N 96.53W
04/16/2024  M2.24 Inch       Union              SD   Mesonet

            Mesonet station 53 SD RWIS North Sioux City.
            Rainfall so far for this event.

0700 AM     Rain             9 S Dallas              43.11N 99.50W
04/16/2024  M2.14 Inch       Gregory            SD   Cocorahs

            Cocorahs station SD-GY-1 Dallas 8.8 S.
            Rainfall so far for this event.

0809 AM     Rain             Rock Valley             43.20N 96.30W
04/16/2024  M2.00 Inch       Sioux              IA   Public

            Report via social media.
            Rainfall so far for this event.

&&

Local storm report, Apr 16, 9:46 AM CDT, 4 minutes before

Preliminary Local Storm Report
National Weather Service Sioux Falls SD
946 AM CDT Tue Apr 16 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0900 AM     Rain             3 NNW Wakefield         42.30N 96.90W
04/16/2024  M4.05 Inch       Dixon              NE   CO-OP Observer

            Rainfall so far for this event.

0923 AM     Rain             2 WSW Gayville          42.88N 97.22W
04/16/2024  M2.62 Inch       Yankton            SD   Mesonet

            Mesonet station 197 SD RWIS Gayville.
            Rainfall so far for this event.

0700 AM     Rain             3 SSW Hubbard           42.35N 96.62W
04/16/2024  M2.44 Inch       Dakota             NE   Cocorahs

            Cocorahs station DAKO002 Hubbard 3.1 SW.
            Rainfall so far for this event.

0715 AM     Rain             Le Mars                 42.79N 96.17W
04/16/2024  M2.35 Inch       Plymouth           IA   Public

            Report via social media.
            Rainfall so far for this event.

0922 AM     Rain             4 E Irene               43.08N 97.08W
04/16/2024  M2.17 Inch       Turner             SD   Mesonet

            Mesonet station 320 SD RWIS IRENE.
            Rainfall so far for this event.

&&

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 16, 2:56 AM CDT	Wind Advisory	FSD	Aurora, Beadle, Bon Homme, Brookings, Clay, Davison and 15 more	16 hr
Apr 16, 3:46 AM CDT	High Wind Warning	FSD	Beadle	74 min
Apr 16, 1:36 PM CDT	Tornado Warning	FSD	Union	24 min
Apr 16, 1:46 PM CDT	Tornado Warning	FSD	Plymouth, Woodbury	29 min
Apr 16, 1:58 PM CDT	Tornado Warning Tornado observed	FSD	Plymouth, Sioux	32 min
Apr 16, 2:15 PM CDT	Tornado Warning	FSD	Plymouth, Sioux	30 min
Apr 16, 2:22 PM CDT	Tornado Warning	FSD	Sioux	23 min
Apr 16, 2:38 PM CDT	Tornado Warning Tornado observed	FSD	Lyon, Sioux	22 min
Apr 16, 2:49 PM CDT	Tornado Warning	FSD	Lyon, Sioux	11 min
Apr 16, 2:59 PM CDT	Tornado Warning	FSD	Lyon, Osceola, Sioux	31 min
Apr 16, 3:10 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	35 min
Apr 16, 4:07 PM CDT	Tornado Warning	FSD	Clay, Dickinson	23 min
Apr 16, 4:02 PM CDT	Tornado Warning	FSD	Nobles	13 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.