Alert archive / South Dakota / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 40, NWS Sioux Falls, SD

June 20, 1989Minnehaha County, Moody County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 20, 1989, 11:02 PM CDT for Minnehaha County, Moody County, South Dakota. It was in force for 43 min.

The area

The counties it named.

The facts

Issued: Jun 20, 1989, 11:02 PM CDT (04:02 UTC)
Expired: Jun 20, 1989, 11:45 PM CDT
In force: 43 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

Counties 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.

The nearest sounding before it

Aberdeen, SD (KHON), launched 00:00Z, 4.0 hours before the alert went out and 177 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: NaN m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

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 20, 7:43 PM CDT, 3 hours 19 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
740 PM CDT TUE JUN 20 1989

    ...THUNDERSTORMS BOIL UP IN SOUTHCENTRAL SOUTH DAKOTA...

AT 740 PM CDT SCATTERED THUNDERSTORMS WERE QUICKLY DEVELOPING
OVER SOUTHCENTRAL SOUTH DAKOTA. THE THUNDERSTORMS WERE IN AN AREA
FROM AROUND BONESTEEL TO STICKNEY...OR ABOUT 60 TO 25 MILES SOUTHWEST
OF MITCHELL SOUTH DAKOTA. ANY OF THESE THUNDERSTORMS COULD PRODUCE
STRONG GUSTY WINDS...HAIL...AND BRIEF HEAVY RAINS AS THEY MOVE NORTHEAST
AT ABOUT 30 MPH ALONG A COLD FRONT. RESIDENTS IN THE AREA FROM AROUND
BONESTEEL TO MITCHELL SHOULD BE ON THE LOOKOUT FOR THESE STORMS THIS
EVENING THROUGH AT LEAST 10 PM CDT.

BOATERS ON LAKE FRA;NCIS CASE SHOULD SEEK SAFE HARBOR SINCE THUNDERSTORMS
ARE EXPECTED THROUGH THE REMAINDER OF TONIGHT.
KAPELA

Special weather statement, Jun 20, 7:46 PM CDT, 3 hours 16 minutes before

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
745 PM CDT TUE JUN 20 1989

AT 730 PM CDT...A THUNDERSTORM WITH VERY HEAVY RAIN AND HAIL HAD
BEGUN MOVING INTO SOUTHEAST SOUTH DAKOTA FROM NEBRASKA. THE STORM
WAS NEAR BONESTEEL...WHICH IS 75 MILES SOUTHWEST OF MITCHELL.

MOVEMENT WAS NORTH AT 15 MILES AN HOUR.

VERY HEAVY RAIN...HAIL...AND STRONG WIND IS LIKELY IN THE AREA
ALONG AND 15 MILES EITHER SIDE OF A ALINE FROM BONESTEEL TO PLATTE...
WHICH IS 50 MILES SOUTHWEST OF MITCHELL.

SPRINGER

Local storm report, Jun 20, 10:12 PM CDT, 50 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1010 PM CDT TUE JUN 20 1989

STORM DATA FOR SOUTH DAKOTA

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

 651 PM CDT     GREGORY...BURKE            HEAVY RAINS AND PEA SIZE HAIL

 900 PM CDT     AURORA...WHITE LAKE        3/4 INCH SIZE HAIL OR LARGER
                                           ROOFS BLOWN OFF A FEW SMALL
                                           SHEDS

 940 PM CDT     CHARLES MIX...GEDDES       FARMER REPORTED 2.50 INCHES
                                           OF RAIN IN ONE HOUR

 943 PM CDT     DAVISON...MITCHELL         RADIO STATION HAD 66 MPH GUST
KAPELA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 8:00 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Gregory	30 min
Jun 20, 8:42 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Douglas	33 min
Jun 20, 9:08 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison	52 min
Jun 20, 9:15 PM CDT	Severe Thunderstorm Warning	FSD	Hanson, Hutchinson	30 min
Jun 20, 9:54 PM CDT	Severe Thunderstorm Warning	FSD	Hutchinson, McCook, Turner	51 min
Jun 20, 10:08 PM CDT	Severe Thunderstorm Warning	FSD	Turner	37 min
Jun 20, 10:26 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	49 min
Jun 20, 11:44 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix	31 min
Jun 21, 12:37 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Brule	38 min
Jun 20, 11:38 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	52 min
Jun 21, 12:20 AM CDT	Severe Thunderstorm Warning	FSD	Sioux	25 min
Jun 20, 11:38 PM CDT	Severe Thunderstorm Warning	FSD	Pipestone	52 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1989 Every severe thunderstorm warning in 1989

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.