Alert archive / Iowa / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 85, NWS Sioux Falls, SD

June 28, 1990Lyon County, Sioux County, Iowa

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 28, 1990, 1:26 AM CDT for Lyon County, Sioux County, Iowa. It was in force for 34 min.

The area

The counties it named.

The facts

Issued: Jun 28, 1990, 1:26 AM CDT (06:26 UTC)
Expired: Jun 28, 1990, 2:00 AM CDT
In force: 34 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

Counties Lyon County, IA, Sioux County, IA

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

Omaha, NE (KOAX), launched 00:00Z, 6.4 hours before the alert went out and 213 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 3614 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 202 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSD 280628
SVRFSD
IAC119-167-280700-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
126 AM CDT THU JUN 28 1990
 
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  200 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN NORTHWEST IOWA
          ...SOUTHERN LYON...NORTHERN SIOUX
 
AT 125 AM CDT RADAR INDICATED A SEVERE THUNDERSTORM 25 MILES SOUTHEAST
OF SIOUX FALLS SOUTH DAKOTA NEAR INWOOD IOWA MOVING EAST SOUTHEAST AT
35 MPH.
 
SOME CITIES INCLUDED IN THE WARNING ARE INWOOD...GEORGE...ROCK VALLEY
AND HULL IOWA.
 
LARGE HAIL...DAMAGING WINDS...AND LOCALLY HEAVY RAIN CAUSING SMALL
STREAM OR URBAN FLOODING CAN BE EXPECTED WITH THESE SEVERE STORMS.
 
IF YOU ARE IN THE PATH OF THIS STORM...YOU SHOULD GET TO A
REINFORCED SHELTER. A SEVERE THUNDERSTORM PRODUCES WINDS IN EXCESS
OF 60 MPH...HAIL 3/4 INCH OR LARGER...DEADLY LIGHTNING...AND HEAVY
RAIN THAT CAN QUICKLY FLOOD A LOW LYING AREA.
 
UMLAND

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

Local storm report, Jun 27, 11:20 PM CDT, 2 hours 6 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE HURON SD
1120 PM CDT WED JUN 27 1990

STORM DATA FOR WED JUN 27TH

TIME            COUNTY...LOCATION          CHARACTER OF STORM...DAMAGE

1925 CDT      BEADLE COUNTY...HURON           1 INCH HAIL...NWS EMPLOYEE

2145 CDT      KINGSBURY COUNTY...4 W OLDHAM   GOLFBALL-SIZE HAIL...
                                              NWS SPOTTER

END
ORGISH

Special weather statement, Jun 27, 11:50 PM CDT, 1 hour 36 minutes before

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
1145 PM CDT WED JUN 27 1990

...SEVERE THUNDERSTORM IN EFFECT FOR PARTS OF NORTHERN SOUTH DAKOTA
UNTIL 4 AM CDT AND PARTS OF SOUTHEAST SOUTH DAKOTA UNTIL 5 AM CDT...

AT 1125 PM CDT...NUMEROUS THUNDERSTORMS...SOME WITH VERY HEAVY RAIN
WERE OCCURRING OVER PARTS OF SOUTHEAST SOUTH DAKOTA.

THE STRONGEST THUNDERSTORMS WERE LOCATED FROM LAKE COUNTY SOUTHEAST TO
SOUTHEAST MI*NNEHAHA COUNTY.

MOVEMENT WAS EAST AT 40 MILES AN HOUR.

MILLER

Special weather statement, Jun 28, 12:08 AM CDT, 1 hour 18 minutes before

IAZ001-004-005-280600-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX CITY IA
1207 AM CDT THU JUN 28 1990

...SEVERE THUNDERSTORM WATCH IN EFFECT FOR NORTHWEST IOWA...NORTHEAST
NEBRASKA AND SOUTHEAST SOUTH DAKOTA UNTIL 500 AM CDT...

AT 1205 AM CDT A STRONG THUNDERSTORM WAS JUST NORTH OF HAWARDEN IOWA OR
45 MILES NORTH OF SIOUX CITY. MOVEMENT WAS SOUTHEAST AT 30 MILES AN
HOUR. HEAVY RAIN...LARGE HAIL...GUSTY WIND AND DEADLY CLOUD TO GROU&ND
LIGHTNING WILL LIKELY OCCUR IN SIOUX COUNTY AND NORTHEAST UNION COUNTY.

DROZD

Local storm report, Jun 28, 12:43 AM CDT, 43 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
100 AM CDT THU JUN 28 1990

STORM DATA FOR WED JUN 28 AND THU JUN 29 1990

 TIME          COUNTY...LOCATION AND STATE   CHARACTER OF STORM...DAMAGE
.......................................................................

 915 PM CDT   GRANT COUNTY...MILBANK         64 MPH WINDS.
              RADIO STATION
 932 PM THRU  MINNEHAHA COUNTY...SIOUX       MARBLE TO 1 INCH HAIL...
 935 PM CDT   FALLS
 940 PM CDT   MINNEHAHA COUNTY...WEST        PEA TO MARBLE SIZE HAIL.
              SIDE SIOUX FALLS
 942 PM CDT   MINNEHAHA COUNTY...SOUTH       3/4 INCH HAIL.
              SIDE SIOUX FALLS
 1032 PM CDT  LAKE COUNTY...LAKE BRANT       1 TO 11/2 INCH HAIL. WINDS
                                             OVR 40 MPH. HEAVY RAIN.
                                             POOR VISIBILITY.
 1041 PM CDT  MOODY-LAKE COUNTY BORDER       3/4 INCH HAIL 50 MPH WIND.
              NEAR CHESTER
 1042 PM CDT  LAKE COUNTY...8 NW MADISON     3/4 INCH HAIL.
 1044 PM CDT  N OF HARTFORD                  THREE SEPERATE FUNNEL
                                             CLOUDS APPARENTLY MOVING
                                             TOWARD HARTFORD.
 1052 PM CDT  MINNEHAHA COUNTY...2 MI NORTH  HAIL.
              OF LYONS

 1054 PM CDT  MINNEHAHA COUNTY...COLTON      ESTIMATED WINDS 60 MPH.
 1055 PM CDT  LAKE COUNTY...CHESTER          1.35 IN RAIN. BASEBALL SIZE
                                             HAIL. STRONG WINDS.
 1055 PM CDT  LAKE COUNTY...3 S CHESTER      BIG TREES DOWN.
 1055 PM CDT  MINNEHAHA...CROOKS             1 INCH HAIL.
 1104 PM CDT  MINNEHAHA...CROOKS             LARGE HAIL. WIND 35 TO 40
                                             MPH. BRANCHES DOWN.
 1105 PM CDT MINNEHAHA COUNTY...WEST SIDE    3/4 INCH HAIL.
             OF SIOUX FALLS
 1112 PM CDT MINNEHAHA COUNTY...SIOUX        71 MPH WINDS.
             FALLS AIRPORT
 1122 PM CDT ROCK sCOUNTY MN...LAVERNE        60 MPH WINDS.
 1123 PM CDT MINNEHAHA COUNTY...SE OF SIOUX  HAIL BREAKING WINDOWS.
             FALLS KSSO TRANSMITTER          DRIFTS OF 3/4 INCH HAIL.
BIER

Special weather statement, Jun 28, 12:52 AM CDT, 34 minutes before

SDZ003-004-015-018-280630-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
1250 AM CDT WED JUN 27 1990

...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PARTS OF NORTHERN SOUTH DAKOTA
UNTIL 4 AM CDT AND PARTS OF SOUTHEAST SOUTH DAKOTA UNTIL 5 AM CDT...

AT 1225 AM CDT...ISOLATED THUNDERSTORMS WERE OCCURRING OVER SOUTH
CENTRAL AND SOUTHEAST SOUTH DAKOTA. THE THUNDERSTORMS WERE 10 MILES
SOUTH OF WINNER AND NEAR SIOUX FALLS.

THE STRONGEST THUNDERSTORM WAS NEAR SIOUX FALLS AND WAS MOVING
SOUTHEAST AT 40 MILES AN HOUR.

ALSO...SCATTERED THUNDERSTORMS WITH LIGHT RAIN WERE OVER NORTH CENTRAL
SOUTH DAKOTA IN THE AREA ALONG AND 60 MILES EITHER SIDE OF MISSOURI
RIVER FROM THE NORTH DAKOTA LINE TO PIERRE.

MOVEMENT OF THESE HAVE NOT YET BEEN DETERMINED.
MOHR

Local storm report, Jun 28, 1:09 AM CDT, 17 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
110 AM CDT THU JUN 28 1990

STORM DATA FOR WED JUN 28 AND THU JUN 29 1990

 TIME          COUNTY...LOCATION AND STATE   CHARACTER OF STORM...DAMAGE
.......................................................................

 1115 PM CDT  MINNEHAHA...3 MI E FSD         ANTENNA DOWN. ROOF OFF
                                             SHED.
 1120 PM CDT  MINNEHAHA...N OF COLTON        WATER OVER ROADS.
 1128 PM CDT  MINNEHAHA...CNTRL SIOUX FALLS  2 INCHES OF RAIN.
 1129 PM CDT  MINNEHAHA...CROOKS             HOUSE COMPLETELY BURNED UP
                                             BY LIGHTNING.
 1130 PM CDT  MINNEHAHA...4 WNW CANTON       2.20 INCH RAIN. 60 MPH
                                             WINDS. SMALL HAIL.
 1134 PM CDT  MINNEHAHA...NORTHERN           WATER UP OVER CURB.
              SIOUX FALLS
 1143 PM CDT  MINNEHAHA...NORTHERN           15 TO 20 INCHES OF WATER
                                             ON ROAD.
 1145 PM CDT  MINNEHAHA...CENTRAL            DOWNED TREE OBSTRUCTING
              SIOUX FALLS.                   ROAD.
 1155 PM CDT  MINNEHAHA...WALL LAKE          18 INCH TREE UPROOTED
                                             OVERLAYING ROAD.
 1245 AM CDT  MINNEHAHA...SOUTHERN SIOUX     21/2 TO 3 INCHES OF RAIN.
              FALLS
 1245 AM CDT  MINNEHAHA...7 SW SIOUX         3/4 INCH HAIL.
              FALLS
 1250 PM CDT  MINNEHAHA...EASTERN SIOUX      1.92 INCHES RAIN.
              FALLS

BIER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 27, 9:34 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	56 min
Jun 27, 11:56 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Sioux	34 min
Jun 28, 12:30 AM CDT	Severe Thunderstorm Warning	FSD	Lyon, Sioux	30 min
Jun 28, 12:49 AM CDT	Severe Thunderstorm Warning	FSD	Cherokee, O'Brien, Plymouth	41 min
Jun 28, 12:58 AM CDT	Severe Thunderstorm Warning	FSD	Lyon, Osceola, Sioux	32 min
Jun 28, 1:37 AM CDT	Severe Thunderstorm Warning	FSD	Cherokee, O'Brien, Plymouth	53 min
Jun 28, 2:08 AM CDT	Severe Thunderstorm Warning	FSD	Ida	37 min
Jun 28, 2:36 AM CDT	Severe Thunderstorm Warning	FSD	Cherokee, Ida	69 min
Jun 28, 2:36 AM CDT	Severe Thunderstorm Warning	FSD	O'Brien	69 min
Jun 28, 2:58 AM CDT	Severe Thunderstorm Warning	FSD	Sioux	32 min
Jun 28, 3:47 AM CDT	Severe Thunderstorm Warning	FSD	Cherokee, O'Brien	58 min

Nearby

Severe Thunderstorm Warnings in Iowa, 1990 Every 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.