Alert archive / South Dakota / Tornado Warnings in 2022

Tornado Warning 5, NWS Rapid City, SD

June 20, 2022Jackson County, Mellette County, South Dakota

NWS Rapid City, SD issued this tornado warning at Jun 20, 2022, 5:21 PM MDT for Jackson County, Mellette County, South Dakota. It was in force for 24 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: Jun 20, 2022, 5:21 PM MDT (23:21 UTC)
Expired: Jun 20, 2022, 5:45 PM MDT
In force: 24 min
Issued by: NWS Rapid City, SD
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Jackson County, SD, Mellette County, SD

The radar

The Rapid City radar (KUDX), 142 km from the middle of the area, began a volume at 23:19 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
Jun 20, 12:37 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Rapid City, SD (KUNR), launched 12:00Z, 11.4 hours before the alert went out and 143 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: 7 J/kg
Mixed-layer CIN: -379 J/kg
Mixed-layer LCL: 1196 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 38 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 Jun 20, 5:09 PM MDT, 12 minutes earlier.

Area forecast discussion, Jun 20, 5:09 PM MDT, 12 minutes before

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Hazardous weather outlook, Jun 20, 2:41 AM MDT, 14 hours 40 minutes before

Hazardous Weather Outlook
National Weather Service Rapid City SD
241 AM MDT Mon Jun 20 2022

SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058-
071-211300-
Harding-Perkins-Butte-Northern Meade Co Plains-Ziebach-
Northern Black Hills-Northern Foot Hills-Rapid City-
Southern Foot Hills-Central Black Hills-Southern Black Hills-
Custer Co Plains-Pennington Co Plains-Haakon-Fall River-
Oglala Lakota-Jackson-Bennett-Mellette-Todd-Tripp-
Sturgis/Piedmont Foot Hills-Southern Meade Co Plains-
Hermosa Foot Hills-Northern Campbell-Southern Campbell-
Western Crook-Wyoming Black Hills-Weston-Northeastern Crook-
241 AM MDT Mon Jun 20 2022 /341 AM CDT Mon Jun 20 2022/

This Hazardous Weather Outlook is for portions of western South
Dakota and northeastern Wyoming.

.DAY ONE...Today and Tonight

There is a slight risk (level 2 of 5) of severe thunderstorms
today, meaning that scattered severe storms are possible. Primary
hazards include wind gusts to 65 mph and golf ball size hail.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed today.

&&

Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity

In the hours before

Local storm report, Jun 20, 3:32 PM MDT, 1 hour 49 minutes before

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Local storm report, Jun 20, 3:42 PM MDT, 1 hour 39 minutes before

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Local storm report, Jun 20, 4:26 PM MDT, 55 minutes before

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Local storm report, Jun 20, 4:46 PM MDT, 35 minutes before

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Local storm report, Jun 20, 5:12 PM MDT, 9 minutes before

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Local storm report, Jun 20, 5:13 PM MDT, 8 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
Jun 19, 6:04 PM MDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson	56 min
Jun 19, 6:45 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Harding	60 min
Jun 19, 6:55 PM MDT	Special Weather Statement	UNR	Haakon	35 min
Jun 19, 7:41 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Harding, Perkins	94 min
Jun 19, 7:45 PM MDT	Special Weather Statement	UNR	Butte	45 min
Jun 19, 8:07 PM MDT	Severe Thunderstorm Warning	UNR	Butte	41 min
Jun 19, 8:55 PM MDT	Special Weather Statement	UNR	Perkins	35 min
Jun 19, 9:12 PM MDT	Special Weather Statement	UNR	Perkins	33 min
Jun 19, 9:47 PM MDT	Severe Thunderstorm Warning	UNR	Meade, Perkins	29 min
Jun 20, 11:05 AM MDT	Special Weather Statement	UNR	Ziebach	25 min
Jun 20, 11:23 AM MDT	Special Weather Statement	UNR	Haakon	52 min
Jun 20, 2:30 PM MDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	60 min
Jun 20, 3:03 PM MDT	Severe Thunderstorm Warning	UNR	Fall River, Oglala Lakota	72 min
Jun 20, 3:10 PM MDT	Severe Thunderstorm Warning	UNR	Custer, Lawrence, Meade, Pennington	51 min
Jun 20, 4:00 PM MDT	Areal Flood Advisory	UNR	Pennington	2 hr
Jun 20, 4:08 PM MDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson, Oglala Lakota, Pennington	67 min
Jun 20, 4:56 PM MDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson, Mellette	64 min
Jun 20, 5:30 PM MDT	Special Weather Statement	UNR	Meade	30 min
Jun 20, 2:28 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	44 min
Jun 20, 2:56 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	49 min

Nearby

Tornado Warnings in South Dakota, 2022 Every tornado warning in 2022 Tornadoes in 2022

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.