Alert archive / South Dakota / Tornado Warnings in 1990

Tornado Warning 2, NWS Sioux Falls, SD

June 1, 1990Brule County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at Jun 1, 1990, 7:57 PM CDT for Brule County, South Dakota. It was in force for 33 min.

The area

The counties it named.

The facts

Issued
Jun 1, 1990, 7:57 PM CDT (00:57 UTC)
Expired
Jun 1, 1990, 8:30 PM CDT
In force
33 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

County Brule 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, 1.0 hours before the alert went out and 142 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 1990-06-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1812 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 1990-06-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 139 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
1812 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
1129 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
139 m²/s²
0-3 km storm-relative helicity
158 m²/s²
Significant tornado parameter
1.1
Supercell composite
6.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KFSD 020058
TORFSD
SDC015-020130-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
757 PM CDT FRI JUN 1 1990
 
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  830 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTH CENTRAL SOUTH DAKOTA
          ...NORTHERN BRULE
 
SOME CITIES INCLUDED IN THIS TORNADO WARNING ARE CHAMBERLAIN.
 
AT 755 PM CDT STATE RADIO REPORTED THAT A TORNADO WAS ON THE
MISSOURI RIVER JUST NORTHWEST OF CHAMBERLAIN. THIS TORNADO
SHOULD MOVE NORTHEAST AT ABOUT 30 MPH. THERE ARE NO TOWNS
NORTHEAST OF CHAMBERLAIN IN THE PATH OF THIS TORNADO.
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.
 
THIS WARNING INCLUDES THE ADJACENT WATERS OF THE MISSOURI RIVER.
KAPELA

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 1, 8:55 PM CDTSevere Thunderstorm WarningFSDAurora, Brule35 min
Jun 1, 10:07 PM CDTSevere Thunderstorm WarningFSDDavison, Douglas, Hanson, Hutchinson53 min
Jun 1, 10:07 PM CDTSevere Thunderstorm WarningFSDCharles Mix53 min
Jun 1, 10:35 PM CDTSevere Thunderstorm WarningFSDLake, McCook40 min
Jun 2, 4:02 AM CDTSevere Thunderstorm WarningFSDMinnehaha23 min

Nearby

Tornado Warnings in South Dakota, 1990Every tornado warning in 1990Tornadoes 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.