Alert archive / South Dakota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 87, NWS Aberdeen, SD

July 6, 1998Jones County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 6, 1998, 11:22 AM CDT for Jones County, South Dakota. It was in force for 63 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 6, 1998, 11:22 AM CDT (16:22 UTC)
Expired
Jul 6, 1998, 12:25 PM CDT
In force
63 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

County Jones County, SD

What was reported inside it

TimeReportWhereRemark
Jul 6, 12:00 PM CDTThunderstorm Wind 52Okaton, SDSixty mph winds blew down some power lines.

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 12:00Z, 4.4 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-pSkew-T log-p diagram, Aberdeen, SD at 12:00Z on 1998-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1335 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 12:00Z on 1998-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 square meters per square second.1939587897117Sfc1 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
1335 J/kg
Mixed-layer CIN
-48 J/kg
Mixed-layer LCL
545 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
106 m²/s²
Significant tornado parameter
0.4
Supercell composite
1.7

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 7:41 AM CDTSevere Thunderstorm WarningABRLyman39 min
Jul 6, 8:04 AM CDTSevere Thunderstorm WarningABRBuffalo61 min
Jul 6, 8:45 AM CDTSevere Thunderstorm WarningABRLyman50 min
Jul 6, 8:49 AM CDTSevere Thunderstorm WarningABRDewey51 min
Jul 6, 12:07 PM CDTSevere Thunderstorm WarningABRJones63 min
Jul 6, 12:26 PM CDTSevere Thunderstorm WarningABRLyman64 min
Jul 6, 6:14 PM CDTSevere Thunderstorm WarningABRCampbell, McPherson61 min
Jul 6, 6:47 PM CDTSevere Thunderstorm WarningABRMcPherson58 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1998Every severe thunderstorm warning in 1998

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.