Alert archive / South Dakota / Tornado Warnings in 2024

Tornado Warning 7, NWS Rapid City, SD

July 29, 2024Mellette County, South Dakota

NWS Rapid City, SD issued this tornado warning at Jul 29, 2024, 6:04 PM CDT for Mellette County, South Dakota. It was in force for 41 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 29, 2024, 6:04 PM CDT (23:04 UTC)
Expired: Jul 29, 2024, 6:45 PM CDT
In force: 41 min
Issued by: NWS Rapid City, SD
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 2.75 in

County Mellette County, SD

The radar

The Rapid City radar (KUDX), 177 km from the middle of the area, began a volume at 23:06 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 29, 4:26 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Rapid City, SD (KUNR), launched 12:00Z, 11.1 hours before the alert went out and 179 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: 123 J/kg
Mixed-layer CIN: -321 J/kg
Mixed-layer LCL: 2021 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: 68 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Rapid City, SD wrote its last area forecast discussion before this tornado warning went out at Jul 28, 6:18 PM CDT, 23 hours 46 minutes earlier.

Area forecast discussion, Jul 28, 6:18 PM CDT, 23 hours 46 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 7:23 PM CDT	Special Weather Statement	UNR	Meade	37 min
Jul 28, 7:31 PM CDT	Special Weather Statement	UNR	Lawrence	29 min
Jul 28, 7:35 PM CDT	Special Weather Statement	UNR	Pennington	25 min
Jul 28, 8:07 PM CDT	Special Weather Statement	UNR	Pennington	23 min
Jul 28, 8:24 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade	36 min
Jul 28, 8:44 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	46 min
Jul 28, 9:32 PM CDT	Special Weather Statement	UNR	Tripp	28 min
Jul 28, 10:27 PM CDT	Special Weather Statement	UNR	Bennett	33 min
Jul 28, 10:43 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson	47 min
Jul 28, 11:14 PM CDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Bennett, Todd	31 min
Jul 28, 11:38 PM CDT	Special Weather Statement	UNR	Mellette	37 min
Jul 28, 11:56 PM CDT	Special Weather Statement	UNR	Mellette	34 min
Jul 29, 12:14 AM CDT	Special Weather Statement	UNR	Todd	46 min
Jul 29, 12:32 AM CDT	Severe Thunderstorm Warning	UNR	Todd, Tripp	43 min
Jul 29, 12:57 AM CDT	Special Weather Statement	UNR	Tripp	48 min
Jul 29, 1:44 PM CDT	Heat Advisory	UNR	Mellette, Tripp	30 hr
Jul 29, 2:35 PM CDT	Red Flag Warning	UNR	Bennett, Custer, Fall River, Jackson, Meade, Oglala Lakota and 1 more	6 hr
Jul 29, 4:14 PM CDT	Special Weather Statement	UNR	Haakon	31 min
Jul 29, 4:22 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson	68 min
Jul 29, 4:48 PM CDT	Special Weather Statement	UNR	Meade	27 min
Jul 29, 5:02 PM CDT	Special Weather Statement	UNR	Harding	28 min
Jul 29, 5:27 PM CDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Haakon, Jackson	18 min
Jul 29, 5:34 PM CDT	Special Weather Statement	UNR	Perkins	26 min
Jul 29, 5:51 PM CDT	Severe Thunderstorm Warning Destructive damage threat	UNR	Mellette	84 min
Jul 29, 5:52 PM CDT	Severe Thunderstorm Warning	UNR	Todd	68 min
Jul 29, 6:01 PM CDT	Severe Thunderstorm Warning	UNR	Perkins	59 min
Jul 29, 6:54 PM CDT	Severe Thunderstorm Warning Destructive damage threat	UNR	Tripp	63 min
Jul 29, 6:56 PM CDT	Severe Thunderstorm Warning	UNR	Ziebach	64 min

Nearby

Tornado Warnings in South Dakota, 2024 Every tornado warning in 2024 Tornadoes 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.