Alert archive / South Dakota / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 177, NWS Aberdeen, SD

August 6, 2015Codington County, Deuel County, Hamlin County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Aug 6, 2015, 3:16 PM CDT for Codington County, Deuel County, Hamlin County, South Dakota. It was in force for 43 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 6, 2015, 3:16 PM CDT (20:16 UTC)
Expired: Aug 6, 2015, 3:59 PM CDT
In force: 43 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

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

The radar

The Aberdeen radar (KABR), 131 km from the middle of the area, began a volume at 20:20 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

Aberdeen, SD (KABR), launched 12:00Z, 8.3 hours before the alert went out and 110 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: 638 J/kg
Mixed-layer CIN: -199 J/kg
Mixed-layer LCL: 862 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 25 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 6, 1:05 PM CDT, 2 hours 11 minutes earlier.

Area forecast discussion, Aug 6, 1:05 PM CDT, 2 hours 11 minutes before

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Hazardous weather outlook, Aug 6, 4:35 AM CDT, 10 hours 41 minutes before

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In the hours before

Local storm report, Aug 6, 9:22 AM CDT, 5 hours 54 minutes before

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Local storm report, Aug 6, 9:24 AM CDT, 5 hours 52 minutes before

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Local storm report, Aug 6, 9:49 AM CDT, 5 hours 27 minutes before

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Local storm report, Aug 6, 3:16 PM CDT, 0 minutes before

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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 5, 11:42 PM CDT	Special Weather Statement	ABR	Brown	48 min
Aug 6, 12:02 AM CDT	Severe Thunderstorm Warning	ABR	Brown	26 min
Aug 6, 12:31 AM CDT	Special Weather Statement	ABR	Brown	59 min
Aug 6, 12:51 AM CDT	Severe Thunderstorm Warning	ABR	Brown	39 min
Aug 6, 1:30 AM CDT	Severe Thunderstorm Warning	ABR	Brown, Day, Marshall	60 min
Aug 6, 2:28 AM CDT	Special Weather Statement	ABR	Day	62 min
Aug 6, 3:21 AM CDT	Flash Flood Warning	ABR	Brown	6 hr
Aug 6, 9:26 AM CDT	Areal Flood Warning	ABR	Brown	24 hr
Aug 6, 11:07 AM CDT	Flash Flood Watch	ABR	Brown, Day, Edmunds, McPherson, Marshall, Roberts	7 hr
Aug 6, 2:49 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Hamlin	56 min
Aug 6, 4:39 PM CDT	Special Weather Statement	ABR	Deuel	21 min
Aug 6, 5:10 PM CDT	Areal Flood Warning	ABR	Deuel	6 hr

Nearby

Severe Thunderstorm Warnings in South Dakota, 2015 Every severe thunderstorm warning in 2015

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.