Alert archive / South Dakota / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 222, NWS Sioux Falls, SD

October 3, 20234 counties in South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Oct 3, 2023, 6:00 PM CDT for 4 counties in South Dakota. It was in force for 45 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
Oct 3, 2023, 6:00 PM CDT (23:00 UTC)
Expired
Oct 3, 2023, 6:45 PM CDT
In force
45 min
Issued by
NWS Sioux Falls, SD
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Bon Homme County, SD, Hutchinson County, SD, Turner County, SD, Yankton County, SD

The radar

The Sioux Falls radar (KFSD), 81 km from the middle of the area, began a volume at 23:02 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
Oct 3, 5:03 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 11.0 hours before the alert went out and 205 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-pSkew-T log-p diagram, Aberdeen, SD at 12:00Z on 2023-10-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 16 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 12:00Z on 2023-10-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 175 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
16 J/kg
Mixed-layer CIN
-304 J/kg
Mixed-layer LCL
1503 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
175 m²/s²
0-3 km storm-relative helicity
266 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

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 Oct 3, 2:52 PM CDT, 3 hours 8 minutes earlier.

Area forecast discussion, Oct 3, 2:52 PM CDT, 3 hours 8 minutes before
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Hazardous weather outlook, Oct 3, 5:08 AM CDT, 12 hours 52 minutes before
Hazardous Weather Outlook
National Weather Service Sioux Falls SD
508 AM CDT Tue Oct 3 2023

IAZ001-012-020-031-MNZ071-097-098-NEZ013-014-SDZ038>040-050-052>071-
041015-
Lyon-Sioux-Plymouth-Woodbury-Lincoln-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-Clay-Union-
508 AM CDT Tue Oct 3 2023

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.

Spotty showers or an isolated thunderstorm are possible through
midday.

The chance for storms will increase by mid-late afternoon and
continue into the early evening. Initial storms in the afternoon may
be capable of large hail up to half dollar size and perhaps an
isolated tornado. As storms evolve into a line in the late afternoon
and evening, the primary threat will transition to damaging winds up
to 70 mph. Brief heavy rainfall is also possible.

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

Much cooler air settles into the region late this week, bringing the
potential for our first frost by Friday night and/or Saturday night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

IAZ002-003-013-014-021-022-032-MNZ072-080-081-089-090-041015-
Osceola-Dickinson-O'Brien-Clay-Cherokee-Buena Vista-Ida-Lyon-Murray-
Cottonwood-Nobles-Jackson-
508 AM CDT Tue Oct 3 2023

This Hazardous Weather Outlook is for northwest Iowa, west central
Iowa and southwest Minnesota.

.DAY ONE...Today and tonight.

Spotty showers or an isolated thunderstorm are possible into the
early afternoon.

The chance for thunderstorms will increase late afternoon into this
evening. Initial storms in the afternoon may be capable of hail up
to quarter size, but the greater threat will be damaging winds up to
70 mph as storms evolve into a line. Brief heavy rainfall is also
possible.

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

Much cooler air settles into the region late this week, bringing the
potential for our first frost by Friday night and/or Saturday night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 3, 6:44 PM CDTTornado WarningFSDHutchinson, McCook, Minnehaha, Turner31 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2023Every severe thunderstorm warning in 2023

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.