Alert archive / South Dakota / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 21, NWS Rapid City, SD

June 2, 2019Custer County, Pennington County, South Dakota

NWS Rapid City, SD issued this severe thunderstorm warning at Jun 2, 2019, 1:28 PM MDT for Custer County, Pennington County, South Dakota. It was in force for 32 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 2, 2019, 1:28 PM MDT (19:28 UTC)
Expired: Jun 2, 2019, 2:00 PM MDT
In force: 32 min
Issued by: NWS Rapid City, SD
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Custer County, SD, Pennington County, SD

The radar

The Rapid City radar (KUDX), 40 km from the middle of the area, began a volume at 19:31 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

Rapid City, SD (KRAP), launched 12:00Z, 7.5 hours before the alert went out and 33 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: 18 J/kg
Mixed-layer CIN: -229 J/kg
Mixed-layer LCL: 1564 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 110 m²/s²
0-3 km storm-relative helicity: 108 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 Rapid City, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 2, 11:19 AM MDT, 2 hours 9 minutes earlier.

Area forecast discussion, Jun 2, 11:19 AM MDT, 2 hours 9 minutes before

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Hazardous weather outlook, Jun 2, 9:49 AM MDT, 3 hours 39 minutes before

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In the hours before

Local storm report, Jun 2, 12:46 PM MDT, 42 minutes before

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Local storm report, Jun 2, 1:02 PM MDT, 26 minutes before

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Local storm report, Jun 2, 1:05 PM MDT, 23 minutes before

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Local storm report, Jun 2, 1:08 PM MDT, 20 minutes before

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Local storm report, Jun 2, 1:14 PM MDT, 14 minutes before

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Local storm report, Jun 2, 1:25 PM MDT, 3 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 2, 10:33 AM MDT	Special Weather Statement	UNR	Lawrence	27 min
Jun 2, 11:00 AM MDT	Special Weather Statement	UNR	Lawrence	30 min
Jun 2, 11:14 AM MDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade, Pennington	46 min
Jun 2, 12:00 PM MDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	45 min
Jun 2, 12:17 PM MDT	Severe Thunderstorm Warning	UNR	Pennington	43 min
Jun 2, 12:58 PM MDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	62 min
Jun 2, 1:58 PM MDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	62 min
Jun 2, 2:26 PM MDT	Severe Thunderstorm Warning	UNR	Custer	20 min
Jun 2, 2:56 PM MDT	Severe Thunderstorm Warning	UNR	Custer, Fall River, Oglala Lakota	64 min
Jun 2, 3:48 PM MDT	Special Weather Statement	UNR	Jackson	27 min
Jun 2, 3:53 PM MDT	Special Weather Statement	UNR	Jackson	37 min
Jun 2, 3:59 PM MDT	Special Weather Statement	UNR	Oglala Lakota	31 min
Jun 2, 4:02 PM MDT	Special Weather Statement	UNR	Lawrence	28 min
Jun 2, 4:06 PM MDT	Severe Thunderstorm Warning	UNR	Jackson, Mellette	39 min
Jun 2, 4:27 PM MDT	Special Weather Statement	UNR	Oglala Lakota	48 min
Jun 2, 4:35 PM MDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson	40 min
Jun 2, 4:43 PM MDT	Severe Thunderstorm Warning	UNR	Jackson, Mellette	32 min
Jun 2, 4:48 PM MDT	Special Weather Statement	UNR	Oglala Lakota	27 min
Jun 2, 5:07 PM MDT	Severe Thunderstorm Warning	UNR	Jackson, Mellette	28 min
Jun 2, 5:15 PM MDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson	45 min
Jun 2, 5:58 PM MDT	Severe Thunderstorm Warning	UNR	Bennett, Todd	62 min
Jun 1, 7:39 PM MDT	Special Weather Statement	UNR	Weston	36 min
Jun 1, 7:50 PM MDT	Special Weather Statement	UNR	Weston	25 min
Jun 1, 7:58 PM MDT	Severe Thunderstorm Warning	UNR	Weston	32 min
Jun 1, 8:29 PM MDT	Special Weather Statement	UNR	Weston	31 min
Jun 1, 8:43 PM MDT	Severe Thunderstorm Warning	UNR	Weston	47 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2019 Every severe thunderstorm warning in 2019

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.