Alert archive / South Dakota / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 9, NWS Aberdeen, SD

June 20, 1989Clark County, Hamlin County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 20, 1989, 9:30 PM CDT for Clark County, Hamlin County, South Dakota. It was in force for 30 min.

The area

The counties it named.

The facts

Issued
Jun 20, 1989, 9:30 PM CDT (02:30 UTC)
Expired
Jun 20, 1989, 10:00 PM CDT
In force
30 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

Counties Clark County, SD, Hamlin County, SD

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Aberdeen, SD (KHON), launched 00:00Z, 2.5 hours before the alert went out and 76 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 1989-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 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 1989-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 square meters per square second.193958Sfc1 km3 km6 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
NaN m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
180 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

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
Jun 20, 8:58 PM CDTSevere Thunderstorm WarningABRClark32 min
Jun 20, 9:53 PM CDTSevere Thunderstorm WarningABRSanborn67 min
Jun 20, 10:08 PM CDTSevere Thunderstorm WarningABRSpink67 min
Jun 20, 10:10 PM CDTSevere Thunderstorm WarningABRBeadle, Clark65 min
Jun 20, 11:12 PM CDTSevere Thunderstorm WarningABRDay63 min
Jun 21, 1:30 AM CDTSevere Thunderstorm WarningABRJerauld, Sanborn30 min
Jun 21, 1:52 AM CDTSevere Thunderstorm WarningABRBeadle, Kingsbury, Miner68 min
Jun 21, 1:56 AM CDTSevere Thunderstorm WarningABRBeadle, Kingsbury, Miner64 min
Jun 21, 3:21 AM CDTSevere Thunderstorm WarningABREdmunds, Potter69 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1989Every severe thunderstorm warning in 1989

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.