Alert archive / South Dakota / Tornado Warnings in 2025

Tornado Warning 9, NWS Rapid City, SD

July 20, 2025Todd County, South Dakota

NWS Rapid City, SD issued this tornado warning at Jul 20, 2025, 7:22 PM CDT for Todd County, South Dakota. It was in force for 23 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 20, 2025, 7:22 PM CDT (00:22 UTC)
Expired: Jul 20, 2025, 7:45 PM CDT
In force: 23 min
Issued by: NWS Rapid City, SD
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 2.75 in

County Todd County, SD

The radar

The North Platte radar (KLNX), 138 km from the middle of the area, began a volume at 00:23 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.

Issued	Product	Office	Lasted
Jul 20, 5:24 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Rapid City, SD (KUNR), launched 00:00Z, 0.4 hours before the alert went out and 199 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: 1882 J/kg
Mixed-layer CIN: -110 J/kg
Mixed-layer LCL: 1104 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: -10 m²/s²
0-3 km storm-relative helicity: 181 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.7

Open this sounding in Storm Lab

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 7:00 PM CDT	Severe Thunderstorm Warning Destructive damage threat	UNR	Todd	60 min
Jul 20, 7:27 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson, Mellette	63 min
Jul 20, 7:41 PM CDT	Tornado Warning	UNR	Todd	19 min
Jul 20, 7:43 PM CDT	Severe Thunderstorm Warning Destructive damage threat	UNR	Todd	34 min
Jul 20, 9:03 PM CDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Harding	57 min
Jul 20, 9:52 PM CDT	Severe Thunderstorm Warning	UNR	Harding, Perkins	68 min
Jul 21, 4:35 PM CDT	Special Weather Statement	UNR		25 min
Jul 21, 5:28 PM CDT	Special Weather Statement	UNR	Bennett	32 min
Jul 21, 6:20 PM CDT	Special Weather Statement	UNR	Bennett	25 min
Jul 21, 6:37 PM CDT	Special Weather Statement	UNR	Oglala Lakota	38 min
Jul 21, 6:40 PM CDT	Severe Thunderstorm Warning	UNR	Fall River, Oglala Lakota	35 min
Jul 21, 4:04 PM CDT	Severe Thunderstorm Warning	UNR	Campbell	41 min
Jul 21, 4:44 PM CDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Campbell, Crook	53 min
Jul 21, 4:46 PM CDT	Severe Thunderstorm Warning	UNR	Campbell, Crook, Weston	45 min
Jul 21, 5:57 PM CDT	Severe Thunderstorm Warning	UNR	Crook	43 min

Nearby

Tornado Warnings in South Dakota, 2025 Every tornado warning in 2025 Tornadoes in 2025

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.