Alert archive / South Dakota / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 159, NWS Aberdeen, SD

August 15, 20194 counties in South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Aug 15, 2019, 6:28 PM CDT for 4 counties in South Dakota. It was in force for 47 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: Aug 15, 2019, 6:28 PM CDT (23:28 UTC)
Expired: Aug 15, 2019, 7:15 PM CDT
In force: 47 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Codington County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD

The radar

The Aberdeen radar (KABR), 130 km from the middle of the area, began a volume at 23:31 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 15, 3:09 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 11.5 hours before the alert went out and 114 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1279 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 75 m²/s²
0-3 km storm-relative helicity: 113 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 Aberdeen, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 15, 6:27 PM CDT, 1 minute earlier.

Area forecast discussion, Aug 15, 6:27 PM CDT, 1 minute before

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Hazardous weather outlook, Aug 15, 4:34 PM CDT, 1 hour 54 minutes before

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In the hours before

Local storm report, Aug 15, 5:39 PM CDT, 49 minutes before

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Local storm report, Aug 15, 5:59 PM CDT, 29 minutes before

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Local storm report, Aug 15, 6:12 PM CDT, 16 minutes before

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Local storm report, Aug 15, 6:15 PM CDT, 13 minutes before

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Local storm report, Aug 15, 6:18 PM CDT, 10 minutes before

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Local storm report, Aug 15, 6:21 PM CDT, 7 minutes before

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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 15, 12:26 PM CDT	Special Weather Statement	ABR	Corson	49 min
Aug 15, 1:39 PM CDT	Special Weather Statement	ABR	Campbell	36 min
Aug 15, 2:51 PM CDT	Severe Thunderstorm Warning	ABR	Jones	17 min
Aug 15, 3:39 PM CDT	Severe Thunderstorm Warning	ABR	Jones, Lyman, Stanley	36 min
Aug 15, 3:49 PM CDT	Special Weather Statement	ABR	Brown	41 min
Aug 15, 4:10 PM CDT	Severe Thunderstorm Warning	ABR	Lyman	20 min
Aug 15, 4:24 PM CDT	Special Weather Statement	ABR	Brown	51 min
Aug 15, 4:43 PM CDT	Special Weather Statement	ABR	Spink	47 min
Aug 15, 5:12 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Day, Marshall	48 min
Aug 15, 5:24 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Hamlin	51 min
Aug 15, 5:30 PM CDT	Severe Thunderstorm Warning	ABR	Day, Marshall, Roberts	45 min
Aug 15, 5:46 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Day, Grant, Roberts	44 min
Aug 15, 5:56 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Deuel, Grant, Hamlin	49 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.