Alert archive / South Dakota / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 1, NWS Aberdeen, SD

March 28, 2007Corson County, Dewey County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Mar 28, 2007, 7:37 PM MDT for Corson County, Dewey County, South Dakota. It was in force for 38 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: Mar 28, 2007, 7:37 PM MDT (01:37 UTC)
Expired: Mar 28, 2007, 8:15 PM MDT
In force: 38 min
Issued by: NWS Aberdeen, SD
Area: Counties, with a storm outline in the text

Counties Corson County, SD, Dewey County, SD

The radar

The Bismarck radar (KBIS), 150 km from the middle of the area, began a volume at 01:37 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

Rapid City, SD (KUNR), launched 00:00Z, 1.6 hours before the alert went out and 210 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: 733 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: 93 m²/s²
0-3 km storm-relative helicity: 201 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 Mar 28, 2:46 PM MDT, 4 hours 51 minutes earlier.

Area forecast discussion, Mar 28, 2:46 PM MDT, 4 hours 51 minutes before

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Hazardous weather outlook, Mar 28, 2:32 PM MDT, 5 hours 5 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
Mar 29, 11:01 AM MDT	Wind Advisory	ABR	Campbell, Corson, Dewey, Edmunds, McPherson, Potter and 3 more	9 hr
Mar 29, 2:58 PM MDT	Winter Weather Advisory	ABR	Corson, Dewey	21 hr

Nearby

Severe Thunderstorm Warnings in South Dakota, 2007 Every severe thunderstorm warning in 2007

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.