Alert archive / South Dakota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 63, NWS Aberdeen, SD

June 27, 1990Clark County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 27, 1990, 5:45 PM CDT for Clark County, South Dakota. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
Jun 27, 1990, 5:45 PM CDT (22:45 UTC)
Expired
Jun 27, 1990, 6:45 PM CDT
In force
60 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

County Clark 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 12:00Z, 10.8 hours before the alert went out and 53 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 1990-06-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 568 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 1990-06-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 square meters per square second.19395878Sfc1 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
568 J/kg
Mixed-layer CIN
-319 J/kg
Mixed-layer LCL
1939 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
122 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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.

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.

In the hours before

Special weather statement, Jun 27, 3:18 PM CDT, 2 hours 27 minutes before
SDZ004-005-272130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
320 PM CDT WED JUN 27 1990

AT 315 PM CDT RADAR INDICTED A THUNDERSTORM WITH VERY HEAVY RAIN HAD
FORMED IN NORTHEAST SOUTH DAKOTA 80 MILES NORTHEAST OF ABERDEEN NEAR
CLAIRE CITY IN ROBERTS COUNTY. THIS STORM WAS MOVING SOUTHEAST AT 25
MPH. IT CAN PRODUCE HEAVY RAIN...SMALL HAIL...AND STRONG WIND.

THE VERY HOT...HUMID AND UNSTABLE AIR IS VERY FAVORABLE FOR THUNDERSTORM
DEVELOPMENT IN NORTHEAST SOUTH DAKOTA THIS AFTERNOON SO YOU SHOULD STAY
ALERT TO THE SKY AND LISTEN FOR LATER STATEMENTS.

KEEFE

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 27, 4:03 PM CDTSevere Thunderstorm WarningABRBrown, Edmunds57 min
Jun 27, 4:57 PM CDTTornado WarningABRBrown, Spink33 min
Jun 27, 5:28 PM CDTSevere Thunderstorm WarningABRSpink62 min
Jun 27, 5:36 PM CDTTornado WarningABRBrown24 min
Jun 27, 6:30 PM CDTSevere Thunderstorm WarningABRSpink30 min
Jun 27, 6:47 PM CDTSevere Thunderstorm WarningABRBeadle58 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1990Every severe thunderstorm warning in 1990

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.