Alert archive / South Dakota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 75, NWS Sioux Falls, SD

June 27, 19904 counties in South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 27, 1990, 8:37 PM CDT for 4 counties in South Dakota. It was in force for 38 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 27, 1990, 8:37 PM CDT (01:37 UTC)
Expired
Jun 27, 1990, 9:15 PM CDT
In force
38 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

Counties Lake County, SD, McCook County, SD, Minnehaha County, SD, Moody County, SD

The radar

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

What was reported inside it

TimeReportWhereRemark
Jun 27, 9:08 PM CDTHail 0.75Minnehaha, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Aberdeen, SD (KHON), launched 00:00Z, 1.6 hours before the alert went out and 162 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 1990-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1502 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 1990-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 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
1502 J/kg
Mixed-layer CIN
-112 J/kg
Mixed-layer LCL
2138 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
371 m²/s²
Significant tornado parameter
0.0
Supercell composite
17.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSD 280139
SVRFSD
SDC079-101-087-099-280215-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
837 PM CDT WED JUN 27 1990
 
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  915 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN EAST CENTRAL SOUTH DAKOTA
          ...SOUTHERN LAKE...MOODY
IN SOUTHEAST SOUTH DAKOTA
          ...MCCOOK...NORTHWESTERN MINNEHAHA
 
AT 835 PM CDT RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM 5
MILES EAST OF BROOKINGS TO 45 MILES NORTHWEST OF SIOUX FALLS NEAR
WINFRED AND CANOVA SOUTH DAKOTA MOVING SOUTHEAST AT 40 MPH.
 
SOME CITIES INCLUDED IN THE WARNING ARE
CHESTER...MADISON...COLMAN...TRENT...SALEM...COLTON...AND LYONS IN
SOUTHEAST AND EAST CENTRAL SOUTH DAKOTA.
 
 
 
THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE
OR NO ADVANCE WARNING SO BE ON THE LOOKOUT.

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, 6:28 PM CDT, 2 hours 9 minutes before
SDZALL-270015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
625 PM CDT WED JUN 27 1990

...TORNADO WATCH NORTH CENTRAL AND NORTHEAST SOUTH DAKOTA TIL 10 PM
   CDT. SEVERE THUNDERSRORM WATCH UNTIL MIDNIGHT CDT NORTHWEST SOUTH
   DAKOTA...

A TORNADO WATCH REMAINS IN EFFECT FOR NORTH CENTRAL AND NORTHEAST SOUTH
DAKOTA. A SEVERE THUNDERSTORM WATCH HAS ALSO BEEN ISSUED FOR NORTHWEST
SOUTH DAKOTA.

AT 6 PM CDT SCATTERED THUNDERSTORMS WITH A FEW SEVERE STORMS CONTINUED
OVER NORTHEAST SOUTH DAKOTA...WHILE DEVELOPING OVER PARTS OF THE WESTERN
THIRD OF SOUTH DAKOTA. OTHERWISE SKIES WERE PARTLY CLOUDY TO MOSTLY
SUNNY OVER THE STATE. TEMPERATURES RANGED FROM 69 AT ABERDEEN WHERE A
THUNDERSTORM COOLED IT OFF SHARPLY TO 102 AT PIERRE AND CHAMBERLAIN.

THROUGH 8 PM CDT SCATTERED THUNDERSTORMS SHOULD MOVE INTO EAST CENTRAL
SECTIONS OF THE STATE AS WELL AS INCREASE OVER THE WESTERN HALF...WHILE
DECREASING OVER PARTS OF THE NO=RTHEAST. TEMPERATURES WILL FALL 4 TO 8
DEGREES EXCEPT MAY FALL 15 TO 20 DEGREES WHERE A THUNDERSTORM MOVES IN.

BIER
Special weather statement, Jun 27, 7:36 PM CDT, 1 hour 1 minute before
SDZALL-270115-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
735 PM CDT WED JUN 27 1990

...TORNADO WATCH NORTH CENTRAL AND NORTHEAST SOUTH DAKOTA TIL 10 PM
   CDT. SEVERE THUNDERSRORM WATCH UNTIL MIDNIGHT CDT FOR THE REST OF
   SOUTH DAKOTA EXCEPT FOR THE SOUTHWEST CORNER.

A TORNADO WATCH REMAINS IN EFFECT FOR NORTH CENTRAL AND NORTHEAST SOUTH
DAKOTA. A SEVERE THUNDERSTORM WATCH HAS ALSO BEEN ISSUED FOR THE REST OF
SOUTH DAKOTA EXCEPT FOR THE SOUTHWEST CORNER.

AT 6 PM CDT SCATTERED THUNDERSTORMS WITH A FEW SEVERE STORMS OR STORMS
PRODUCING VERY HEAVY RAIN WERE OVER NORTHEAST...EAST CENTRAL AND THE
WESTERN THIRD OF SOUTH DAKOTA. SOME STORMS WERE ALSO PRODUCING SMALL
STREAM OR URBAN FLOODING. TEMPERATURES RANGED FROM 76 AT WATERTOWN TO
99 AT CHAMBERLAIN.{{}
THROUGH 8 PM CDT SCATTERED THUNDERSTORMS WITH A FEW SEVERE STORMS WILL
DECREASE IN THE NORTHEAST...BUT WILL BE DEVELOPING IN THE SOUTHEAST
AND POSSIBLY PARTS OF THE CENTRAL. TEMPERATURES WILL FALL 5 TO 10
DEGREES EXCEPT MAY FALL 15 TO 20 DEGREES WHERE A THUNDERSTORM MOVES IN.
SMALL STREAM AND URBAN FLOODING WILL CONTINUE TO BE A PROBLEM IN THOSE
AREAS WHERE VERY HEAVY THUNDERSTORM RAINS FALL.

BIER
r
Special weather statement, Jun 27, 8:10 PM CDT, 27 minutes before
SDZ011-012-018-280110-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
810 PM CDT WED JUN 28 1990

...SEVERE THUNDERSTORM WATCH IN EFFECT FOR SOUTHEAST SOUTH DAKOTA AND
PARTS OF SOUTHWEST MINNESOTA AND NORTHWEST IOWA...

AT 8 PM CDT SEVERE THUNDERSTORMS WITH VERY HEAVY RAIN WERE MOVING INTO
SOUTHEAST SOUTH DAKOTA.

THESE THUNDERSTORMS EXTENDED FROM 25 MILES NORTH OF SIOUX FALLS NEAR
ARTESIAN TO 10 MILES NORTH OF BROOKINGS NEAR BRUCE.  THESE STORMS ARE
CAPABLE OF PRODUCING GUSTY WINDS...SMALL HAIL...DANGEROUS LIGHTENING
AND HEAVY RAINS.

MOVEMENT WAS TO THE SOUTHEAST AT 30 MILES AN HOUR.
 BERG

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 27, 7:51 PM CDTSevere Thunderstorm WarningFSDBrookings39 min
Jun 27, 8:10 PM CDTSevere Thunderstorm WarningFSDBrookings, Lake, Moody35 min
Jun 27, 9:08 PM CDTSevere Thunderstorm WarningFSDMcCook, Minnehaha37 min
Jun 27, 9:08 PM CDTSevere Thunderstorm WarningFSDMoody37 min
Jun 27, 9:34 PM CDTSevere Thunderstorm WarningFSDLincoln56 min
Jun 27, 11:56 PM CDTSevere Thunderstorm WarningFSDLincoln34 min
Jun 27, 11:56 PM CDTSevere Thunderstorm WarningFSDMcCook, Minnehaha, Turner34 min
Jun 28, 12:30 AM CDTSevere Thunderstorm WarningFSDLincoln, Minnehaha, Turner30 min
Jun 28, 12:58 AM CDTSevere Thunderstorm WarningFSDLincoln32 min
Jun 28, 7:32 AM CDTSevere Thunderstorm WarningFSDBrookings, Lake, Moody43 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.