Alert archive / South Dakota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 41, NWS Rapid City, SD

June 24, 2002Lawrence County, Pennington County, South Dakota

NWS Rapid City, SD issued this severe thunderstorm warning at Jun 24, 2002, 8:20 PM MDT for Lawrence County, Pennington County, South Dakota. It was in force for 55 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
Jun 24, 2002, 8:20 PM MDT (02:20 UTC)
Expired
Jun 24, 2002, 9:15 PM MDT
In force
55 min
Issued by
NWS Rapid City, SD
Area
Counties, with a storm outline in the text

Counties Lawrence County, SD, Pennington County, SD

What was reported inside it

TimeReportWhereRemark
Jun 24, 8:45 PM MDTHail 0.75Hill City, 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

Aberdeen, SD (KABR), launched 00:00Z, 2.3 hours before the alert went out and 397 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-pSkew-T log-p diagram, Aberdeen, SD at 00:00Z on 2002-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1326 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 00:00Z on 2002-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -21 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1326 J/kg
Mixed-layer CIN
-81 J/kg
Mixed-layer LCL
2283 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
-21 m²/s²
0-3 km storm-relative helicity
14 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 7:01 PM MDTSevere Thunderstorm WarningUNRTodd29 min
Jun 24, 7:08 PM MDTSevere Thunderstorm WarningUNRTripp52 min
Jun 24, 7:57 PM MDTSevere Thunderstorm WarningUNRTripp63 min
Jun 24, 8:32 PM MDTSevere Thunderstorm WarningUNRMeade28 min
Jun 24, 11:05 PM MDTSevere Thunderstorm WarningUNRBennett55 min
Jun 25, 2:00 AM MDTSevere Thunderstorm WarningUNRPennington45 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2002Every 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.