Alert archive / South Dakota / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 166, NWS Rapid City, SD

July 14, 2016Perkins County, South Dakota

NWS Rapid City, SD issued this severe thunderstorm warning at Jul 14, 2016, 7:38 PM MDT for Perkins County, South Dakota. It was in force for 25 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 14, 2016, 7:38 PM MDT (01:38 UTC)
Expired: Jul 14, 2016, 8:03 PM MDT
In force: 25 min
Issued by: NWS Rapid City, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Perkins County, SD

The radar

The Rapid City radar (KUDX), 154 km from the middle of the area, began a volume at 01:40 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

Bismarck Municip, ND (KBIS), launched 00:00Z, 1.6 hours before the alert went out and 197 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: 4 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1444 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: 26 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 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 Jul 14, 5:16 PM MDT, 2 hours 22 minutes earlier.

Area forecast discussion, Jul 14, 5:16 PM MDT, 2 hours 22 minutes before

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Hazardous weather outlook, Jul 14, 2:07 PM MDT, 5 hours 31 minutes before

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In the hours before

Local storm report, Jul 14, 6:46 PM MDT, 52 minutes before

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Special weather statement, Jul 14, 6:56 PM MDT, 42 minutes before

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Local storm report, Jul 14, 7:04 PM MDT, 34 minutes before

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Local storm report, Jul 14, 7:17 PM MDT, 21 minutes before

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Local storm report, Jul 14, 7:28 PM MDT, 10 minutes before

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Local storm report, Jul 14, 7:32 PM MDT, 6 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 14, 6:22 PM MDT	Severe Thunderstorm Warning	UNR	Perkins	38 min
Jul 14, 6:37 PM MDT	Severe Thunderstorm Warning	UNR	Harding	53 min
Jul 14, 6:56 PM MDT	Special Weather Statement	UNR	Perkins	49 min
Jul 14, 7:14 PM MDT	Severe Thunderstorm Warning	UNR	Perkins	50 min
Jul 14, 7:52 PM MDT	Severe Thunderstorm Warning	UNR	Perkins	38 min
Jul 14, 8:20 PM MDT	Severe Thunderstorm Warning	UNR	Meade, Perkins	55 min
Jul 14, 9:03 PM MDT	Severe Thunderstorm Warning	UNR	Meade, Ziebach	42 min
Jul 14, 9:29 PM MDT	Severe Thunderstorm Warning	UNR	Haakon	46 min
Jul 14, 10:41 PM MDT	Special Weather Statement	UNR	Butte	34 min
Jul 15, 12:51 AM MDT	Special Weather Statement	UNR	Bennett	39 min
Jul 15, 2:10 AM MDT	Special Weather Statement	UNR	Bennett, Jackson	65 min
Jul 15, 7:40 AM MDT	Special Weather Statement	UNR	Oglala Lakota	65 min
Jul 15, 2:31 PM MDT	Special Weather Statement	UNR	Custer	44 min
Jul 15, 3:16 PM MDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	48 min
Jul 15, 3:47 PM MDT	Flash Flood Warning	UNR	Pennington	118 min
Jul 15, 4:06 PM MDT	Special Weather Statement	UNR	Pennington	39 min
Jul 15, 4:12 PM MDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	33 min
Jul 15, 4:48 PM MDT	Special Weather Statement	UNR	Pennington	27 min
Jul 15, 5:17 PM MDT	Severe Thunderstorm Warning	UNR	Pennington	28 min
Jul 15, 5:21 PM MDT	Areal Flood Advisory	UNR	Pennington	114 min
Jul 15, 5:46 PM MDT	Special Weather Statement	UNR	Pennington	29 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2016 Every severe thunderstorm warning in 2016

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.