Alert archive / South Dakota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 52, NWS Rapid City, SD

July 7, 2002Bennett County, South Dakota

NWS Rapid City, SD issued this severe thunderstorm warning at Jul 7, 2002, 2:31 PM MDT for Bennett County, South Dakota. It was in force for 44 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 7, 2002, 2:31 PM MDT (20:31 UTC)
Expired: Jul 7, 2002, 3:15 PM MDT
In force: 44 min
Issued by: NWS Rapid City, SD
Area: Counties, with a storm outline in the text

County Bennett County, SD

What was reported inside it

Time	Report	Where	Remark
Jul 7, 2:50 PM MDT	Hail 0.75	Martin, SD

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Rapid City, SD (KUNR), launched 12:00Z, 8.5 hours before the alert went out and 138 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: 373 J/kg
Mixed-layer CIN: -140 J/kg
Mixed-layer LCL: 1115 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 7 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 Jul 7, 2:25 PM MDT, 6 minutes earlier.

Area forecast discussion, Jul 7, 2:25 PM MDT, 6 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
Jul 7, 1:07 PM MDT	Severe Thunderstorm Warning	UNR	Custer	38 min
Jul 7, 1:48 PM MDT	Severe Thunderstorm Warning	UNR	Jackson	42 min
Jul 7, 4:11 PM MDT	Severe Thunderstorm Warning	UNR	Bennett	49 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.