Alert archive / South Dakota / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 119, NWS Sioux Falls, SD

July 30, 2024Davison County, Hanson County, McCook County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 30, 2024, 7:41 AM CDT for Davison County, Hanson County, McCook County, South Dakota. It was in force for 34 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: Jul 30, 2024, 7:41 AM CDT (12:41 UTC)
Expired: Jul 30, 2024, 8:15 AM CDT
In force: 34 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Davison County, SD, Hanson County, SD, McCook County, SD

The radar

The Sioux Falls radar (KFSD), 84 km from the middle of the area, began a volume at 12:42 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

Minneapolis, MN (KMPX), launched 12:00Z, 0.7 hours before the alert went out and 357 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: 2197 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 808 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 114 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 3.5

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 Jul 30, 7:12 AM CDT, 29 minutes earlier.

Area forecast discussion, Jul 30, 7:12 AM CDT, 29 minutes before

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Hazardous weather outlook, Jul 30, 5:18 AM CDT, 2 hours 23 minutes before

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In the hours before

Local storm report, Jul 30, 6:34 AM CDT, 1 hour 7 minutes before

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Local storm report, Jul 30, 6:42 AM CDT, 59 minutes before

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Local storm report, Jul 30, 6:57 AM CDT, 44 minutes before

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Local storm report, Jul 30, 7:13 AM CDT, 28 minutes before

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Local storm report, Jul 30, 7:14 AM CDT, 27 minutes before

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Local storm report, Jul 30, 7:25 AM CDT, 16 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 7:44 PM CDT	Severe Thunderstorm Warning Destructive damage threat	FSD	Gregory	46 min
Jul 29, 8:22 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Brule, Charles Mix, Davison, Douglas	38 min
Jul 29, 8:55 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Charles Mix, Davison, Douglas, Hutchinson	50 min
Jul 29, 9:16 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Bon Homme, Charles Mix, Davison, Hanson, Hutchinson, Yankton	44 min
Jul 29, 9:19 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix, Gregory	41 min
Jul 29, 9:46 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Hutchinson, Turner, Yankton	44 min
Jul 29, 9:53 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix, Clay, Yankton	52 min
Jul 29, 10:44 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	46 min
Jul 29, 11:18 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	42 min
Jul 29, 11:28 PM CDT	Severe Thunderstorm Warning	FSD	Union	32 min
Jul 30, 3:05 AM CDT	Severe Thunderstorm Warning	FSD	Hanson, Lake, McCook, Miner, Minnehaha	40 min
Jul 30, 4:36 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln, McCook, Minnehaha, Turner	39 min
Jul 30, 5:09 AM CDT	Severe Thunderstorm Warning	FSD	Clay, Lincoln, Turner, Union	51 min
Jul 30, 6:15 AM CDT	Severe Thunderstorm Warning	FSD	Brule	45 min
Jul 30, 6:48 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Brule, Jerauld	42 min
Jul 30, 7:14 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison, Sanborn	46 min
Jul 30, 8:14 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Union	28 min
Jul 29, 11:49 PM CDT	Severe Thunderstorm Warning	FSD	Cherokee, Ida, Plymouth, Woodbury	41 min
Jul 30, 12:20 AM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Buena Vista, Cherokee, Ida, Woodbury	55 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.