Alert archive / South Dakota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 103, NWS Rapid City, SD

August 7, 2002Harding County, South Dakota

NWS Rapid City, SD issued this severe thunderstorm warning at Aug 7, 2002, 8:44 PM MDT for Harding County, South Dakota. It was in force for 46 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 7, 2002, 8:44 PM MDT (02:44 UTC)
Expired: Aug 7, 2002, 9:30 PM MDT
In force: 46 min
Issued by: NWS Rapid City, SD
Area: Counties, with a storm outline in the text

County Harding County, SD

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 2.7 hours before the alert went out and 253 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: 609 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 3110 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 95 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 Rapid City, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 7, 8:25 PM MDT, 19 minutes earlier.

Area forecast discussion, Aug 7, 8:25 PM MDT, 19 minutes before

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In the hours before

Local storm report, Aug 7, 8:39 PM MDT, 5 minutes before

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The office that day

Everything else NWS Rapid City, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 7, 9:39 PM MDT	Severe Thunderstorm Warning	UNR	Meade	51 min
Aug 7, 9:53 PM MDT	Severe Thunderstorm Warning	UNR	Harding, Perkins	67 min
Aug 8, 1:12 PM MDT	Severe Thunderstorm Warning	UNR	Todd	48 min
Aug 8, 2:09 PM MDT	Severe Thunderstorm Warning	UNR	Harding	66 min
Aug 8, 3:01 PM MDT	Severe Thunderstorm Warning	UNR	Perkins	59 min
Aug 8, 3:16 PM MDT	Severe Thunderstorm Warning	UNR	Fall River	59 min
Aug 8, 3:21 PM MDT	Severe Thunderstorm Warning	UNR	Lawrence	54 min
Aug 8, 3:50 PM MDT	Severe Thunderstorm Warning	UNR	Butte	55 min
Aug 8, 4:00 PM MDT	Flash Flood Warning	UNR	Lawrence	4 hr
Aug 8, 4:11 PM MDT	Severe Thunderstorm Warning	UNR	Meade	64 min
Aug 8, 4:18 PM MDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	57 min
Aug 8, 5:15 PM MDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	60 min
Aug 8, 5:39 PM MDT	Severe Thunderstorm Warning	UNR	Perkins	51 min
Aug 8, 5:43 PM MDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson, Ziebach	47 min
Aug 7, 6:15 PM MDT	Severe Thunderstorm Warning	UNR	Weston	60 min
Aug 7, 6:20 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	40 min
Aug 7, 6:59 PM MDT	Severe Thunderstorm Warning	UNR	Crook	61 min
Aug 8, 2:27 PM MDT	Severe Thunderstorm Warning	UNR	Crook, Weston	48 min
Aug 8, 3:13 PM MDT	Severe Thunderstorm Warning	UNR	Crook	32 min
Aug 8, 3:17 PM MDT	Severe Thunderstorm Warning	UNR	Weston	43 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2002 Every severe thunderstorm warning in 2002

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.