Alert archive / Iowa / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 83, NWS Sioux Falls, SD

June 28, 1990Cherokee County, O'Brien County, Plymouth County, Iowa

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 28, 1990, 12:49 AM CDT for Cherokee County, O'Brien County, Plymouth County, Iowa. It was in force for 41 min. 4 reports 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 28, 1990, 12:49 AM CDT (05:49 UTC)
Expired: Jun 28, 1990, 1:30 AM CDT
In force: 41 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

Counties Cherokee County, IA, O'Brien County, IA, Plymouth County, IA

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

Time	Report	Where
Jun 28, 1:15 AM CDT	Thunderstorm Wind 50	O'Brien, IA
Jun 28, 1:25 AM CDT	Thunderstorm Wind 56	O'Brien, IA
Jun 28, 1:30 AM CDT	Thunderstorm Wind 50	O'Brien, IA
Jun 28, 1:30 AM CDT	Thunderstorm Wind 50	Plymouth, IA

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

Omaha, NE (KOAX), launched 00:00Z, 5.8 hours before the alert went out and 176 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 KSUX 280549
SVRSUX
IAC035-149-141-280630-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE SIOUX CITY IA
1249 AM CDT THU JUN 28 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 130 AM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE NORTHWEST PART OF IOWA
      NORTHERN CHEROKEE...NORTHERN PLYMOUTH...OBRIEN

AT 1243 AM CDT RADAR INDICATED INTENSE THUNDERSTORMS NEAR ORANGE
CITY...40 MILES NORTHEAST OF SIOUX CITY. MOVEMENT WAS SOUTHEAST
AT 35 MILES AN HOUR. PERSONS IN THE TOWNS OF AKRON... MARCUS AND
SHELDON AS WELL AS THE SURROUNDING AREA ARE IN THE PATH OF THESE
STORMS AND SHOULD TAKE SHELTER IMMEDIATELY.

REMEMBER...SEVERE THUNDERSTORMS CAN PRODUCE DAMAGING WINDS IN EXCESS
OF 60 MPH...LARGE HAIL...DEADLY LIGHTNING...AND HEAVY RAINS THAT CAN
QUICKLY FLOOD LOW LYING AREAS. IF YOU ARE IN THE PATH OF THIS STORM
TAKE SHELTER IN A REINFORCED BUILDING IMMEDIATEELY.

ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOUR REPORTS
OF SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE.

DROZD

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, 10:22 PM CDT, 2 hours 27 minutes before

SDZALL-280415-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1022 PM CDT WED JUN 27 1990

...SEVERE WEATHER STILL POSSIBLE IN A LARGE PART OF SOUTH DAKOTA...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR PORTIONS OF THE NORTH/
WEST AND SOUTHEAST SECTIONS UNTIL MIDNIGHT CDT...AND FOR PORTIONS OF
THE NORTH UNTIL 4 AM CDT.

AT 10 PM CDT THUNDERSTORMS CONTINUED TO MOVE ACROSS NORTHCENTRAL AND
EASTERN SECTIONS OF THE STATE. TEMPERATURES RANGED FROM 86 AT
CHAMBERLAIN TO 72 AT WATERTOWN.

THROUGH MIDNIGHT CDT THUNDERSTORMS...WITH A FEW POSSIBLY SEVERE...WILL
CONTINUE TO MOVE THROUGH THE NORTH AND EAST. LOCALLY HEAVY RAIN IS ALSO
A POSSIBILITY WITH THESE STORMS. TEMPERATURES WILL DROP INTO THE 60S
AND 70S.
THEOPHILUS

Special weather statement, Jun 27, 11:00 PM CDT, 1 hour 49 minutes before

IAZ001-004-005-280500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX CITY IA
1058 PM CDT WED JUN 27 1990

...THE SEVERE THUNDERSTORM WARNING FOR LYON AND SIOUX COUNTIES IN
NORTHWEST IOWA HAS EXPIRED...

AT 1055 PM CDT A STRONG THUNDERSTORM WAS JUST SOUTHEAST OF SHELDON OR
50 MILES NORTHEAST OF SIOUX CITY. THIS STORM HAS DECREASED IN INTENSITY
SINCE 1045 PM. HOWEVER...HEAVY RAIN...SMALLY HAIL...GUSTY WIND AND
DEADLY CLOUD TO GROUND LIGHTNING WILL ACCOMPANY THIS STORM INTO OBRIEN
COUNTY.

QUINN

Local storm report, Jun 27, 11:20 PM CDT, 1 hour 29 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, 59 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, 41 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, 6 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

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, 12:58 AM CDT	Severe Thunderstorm Warning	FSD	Lyon, Osceola, Sioux	32 min
Jun 28, 1:26 AM CDT	Severe Thunderstorm Warning	FSD	Lyon, Sioux	34 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.