Alert archive / South Dakota / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 32, NWS Aberdeen, SD

June 12, 20135 counties in South Dakota; Big Stone County, Traverse County, Minnesota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 12, 2013, 5:17 AM CDT for 5 counties in South Dakota; Big Stone County, Traverse County, Minnesota. 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: Jun 12, 2013, 5:17 AM CDT (10:17 UTC)
Expired: Jun 12, 2013, 6:00 AM CDT
In force: 43 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Big Stone County, MN, Traverse County, MN, Codington County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Roberts County, SD

The radar

The Aberdeen radar (KABR), 129 km from the middle of the area, began a volume at 10:17 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 00:00Z, 10.3 hours before the alert went out and 130 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: 3031 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: 194 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

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 Aberdeen, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 12, 4:14 AM CDT, 1 hour 3 minutes earlier.

Area forecast discussion, Jun 12, 4:14 AM CDT, 1 hour 3 minutes before

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Hazardous weather outlook, Jun 12, 4:37 AM CDT, 40 minutes before

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In the hours before

Local storm report, Jun 12, 4:13 AM CDT, 1 hour 4 minutes before

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Local storm report, Jun 12, 4:17 AM CDT, 1 hour before

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Local storm report, Jun 12, 4:42 AM CDT, 35 minutes before

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Local storm report, Jun 12, 4:51 AM CDT, 26 minutes before

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Local storm report, Jun 12, 4:52 AM CDT, 25 minutes before

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Local storm report, Jun 12, 5:02 AM CDT, 15 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
Jun 12, 2:24 AM CDT	Severe Thunderstorm Warning	ABR	Campbell, Edmunds, Faulk, Hand, Hyde, McPherson and 2 more	51 min
Jun 12, 4:03 AM CDT	Severe Thunderstorm Warning	ABR	Day	42 min
Jun 12, 4:24 AM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Day, Deuel, Grant, Hamlin and 2 more	51 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2013 Severe Thunderstorm Warnings in Minnesota, 2013 Every severe thunderstorm warning in 2013

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.