Alert archive / South Dakota / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 6, NWS Aberdeen, SD

May 12, 2009Dewey County, Potter County, Walworth County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at May 12, 2009, 6:34 PM MDT for Dewey County, Potter County, Walworth County, South Dakota. It was in force for 41 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: May 12, 2009, 6:34 PM MDT (00:34 UTC)
Expired: May 12, 2009, 7:15 PM MDT
In force: 41 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon

Counties Dewey County, SD, Potter County, SD, Walworth County, SD

The radar

The Aberdeen radar (KABR), 149 km from the middle of the area, began a volume at 00:36 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
May 12, 2:36 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
May 12, 6:08 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

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.

In the hours before

Local storm report, May 12, 6:18 PM MDT, 16 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
May 12, 6:58 PM MDT	Severe Thunderstorm Warning	ABR	Lyman	32 min
May 12, 7:30 PM MDT	Severe Thunderstorm Warning	ABR	Buffalo, Lyman	45 min
May 12, 7:41 PM MDT	Severe Thunderstorm Warning	ABR	Faulk, Potter	49 min
May 12, 8:20 PM MDT	Severe Thunderstorm Warning	ABR	Faulk, Hand, Hughes, Hyde, Potter, Sully	11 min
May 12, 8:54 PM MDT	Severe Thunderstorm Warning	ABR	Spink	13 min
May 13, 2:27 AM MDT	High Wind Warning	ABR	Corson, Dewey, Hughes, Stanley, Sully	18 hr

Nearby

Severe Thunderstorm Warnings in South Dakota, 2009 Every severe thunderstorm warning in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.