Alert archive / South Dakota / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 154, NWS Aberdeen, SD

July 17, 2008Dewey County, Potter County, Sully County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 17, 2008, 2:12 AM MDT for Dewey County, Potter County, Sully County, South Dakota. It was in force for 48 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: Jul 17, 2008, 2:12 AM MDT (08:12 UTC)
Expired: Jul 17, 2008, 3:00 AM MDT
In force: 48 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon

Counties Dewey County, SD, Potter County, SD, Sully County, SD

The radar

The Aberdeen radar (KABR), 159 km from the middle of the area, began a volume at 07:58 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, 8.2 hours before the alert went out and 151 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: 153 J/kg
Mixed-layer CIN: -188 J/kg
Mixed-layer LCL: 2300 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 111 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 Jul 16, 7:22 PM MDT, 6 hours 50 minutes earlier.

Area forecast discussion, Jul 16, 7:22 PM MDT, 6 hours 50 minutes before

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In the hours before

Local storm report, Jul 16, 8:17 PM MDT, 5 hours 55 minutes before

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Local storm report, Jul 16, 8:22 PM MDT, 5 hours 50 minutes before

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Local storm report, Jul 16, 8:34 PM MDT, 5 hours 38 minutes before

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Local storm report, Jul 16, 9:27 PM MDT, 4 hours 45 minutes before

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Local storm report, Jul 16, 10:08 PM MDT, 4 hours 4 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
Jul 16, 6:54 PM MDT	Severe Thunderstorm Warning	ABR	Hughes, Hyde, Sully	51 min
Jul 16, 7:01 PM MDT	Severe Thunderstorm Warning	ABR	Jones, Lyman	44 min
Jul 16, 7:25 PM MDT	Severe Thunderstorm Warning	ABR	Hughes, Lyman, Stanley	50 min
Jul 16, 7:39 PM MDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Hughes, Hyde, Lyman	66 min
Jul 16, 7:43 PM MDT	Severe Thunderstorm Warning	ABR	Buffalo, Hughes, Lyman	32 min
Jul 16, 7:46 PM MDT	Severe Thunderstorm Warning	ABR	Lyman	24 min
Jul 16, 7:49 PM MDT	Severe Thunderstorm Warning	ABR	Hughes, Hyde, Sully	41 min
Jul 16, 8:18 PM MDT	Severe Thunderstorm Warning	ABR	Faulk, Hand, Hyde	42 min
Jul 16, 8:18 PM MDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Hughes, Hyde, Spink	31 min
Jul 16, 8:43 PM MDT	Severe Thunderstorm Warning	ABR	Buffalo, Lyman	47 min
Jul 16, 8:50 PM MDT	Severe Thunderstorm Warning	ABR	Faulk, Hand, Hyde, Spink	55 min
Jul 16, 9:21 PM MDT	Severe Thunderstorm Warning	ABR	Hand	23 min
Jul 16, 9:29 PM MDT	Severe Thunderstorm Warning	ABR	Buffalo	31 min
Jul 16, 9:44 PM MDT	Severe Thunderstorm Warning	ABR	Spink	61 min
Jul 16, 10:31 PM MDT	Severe Thunderstorm Warning	ABR	Brown, Clark, Day, Spink	44 min
Jul 17, 2:56 AM MDT	Severe Thunderstorm Warning	ABR	Edmunds, Faulk, Potter, Walworth	64 min
Jul 17, 3:33 AM MDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds, Faulk, Spink	30 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2008 Every severe thunderstorm warning in 2008

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.