Severe Thunderstorm Warning 20, NWS Sioux Falls, SD

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
535 PM CDT WED JUN 24 1987

AT 530 PM CDT...SCATTERED VERY HEAVY THUNDERSTORMS CONTINUED OVER PARTS
OF SOUTHEAST SOUTH DAKOTA...NORTHEAST NEBRASKA...SOUTHWEST MINNESOTA AND
INTO NORTHWEST IOWA.

THESE STORMS WERE MOSTLY SOUTHEAST OF A LINE FROM CLEAR LAKE TO PICKSTOWN
WITH THE HEAVIEST STORMS LOCATED 15 MILES NORTHEAST AND JUST WEST OF
SIOUX FALLS...10 MILES WEST OF CENTERVILLE AND JUST NORTH OF YANKTON.

THE STORMS OVER THE SOUTHEAST CORNER OF SOUTH DAKOTA COULD PRODUCE VERY
HEAVY RAIN...HAIL AND GUSTY WINDS.  PERSONS IN THE SIOUX FALLS AREA AND
SOUTHWARD INTO THE SOUTHEAST CORNER OF THE STATE SHOULD BE ALERT FOR
THREATENING WEATHER CONDITIONS AS THESE STORMS MOVE THROUGH.

MOVEMENT WAS EAST AT 30 MILES AN HOUR.
PFEIFFER

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
555 PM CDT WED JUN 24 1987

AT 550 PM CDT...SHOWERS AND THUNDERSTORMS...SOME OF THEM INTENSE WITH
VERY HEAVY RAIN...STRONG WINDS AND POSSIBLE HAILL...CONTINUED OVER PARTS
OF SOUTHEAST SOUTH DAKOTA...SOUTHWEST MINNESOTA...NORTHWEST IOWA AND
NORTHEAST NEBRASKA.

THE SHOWERS AND THUNDERSTORMS WERE SCATTERED IN A 100 MILE WIDE AREA
FROM ABOUT 110 MILES SOUTHWEST OF SIOUX FALLS...NEAR MADISON NEBRASKA TO
ABOUT 90 MILES NORTHEAST OF SIOUX FALLS...NEAR GRANITE FALLS MINNESOTA.

THE MOST INTENSE THUNDERSTORMS WERE IN A 25 MILE WIDE AREA FROM 15 MILES
NORTHEAST OF SIOUX FALLS NEAR GARRISON SOUTH DAKOTA TO 75 MILES
SOUTHWEST OF SIOUX FALLS NEAR RANDOLPH NEBRASKA.

PEOPLE THROUGHOUT SOUTHEAST SOUTH DAKOTA...SOUTHWEST MINNESOTA AND
NORTHWEST IOWA SHOULD BE ALERT UNTIL 8 PM CDT FOR INTENSE THUNDERSTORMS
PRODUCING VERY HEAVY RAIN...HAIL AND STRONG GUSTY WINDS OF 40 TO 50 MPH
AT 539 PM CDT THUNDERSTORMS PRODUCED WIND GUSTS OF 47 MPH AT SIOUX
FALLS.
BEHREND

^DSMSPSSUX
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX CITY IA
605 PM CDT WED JUN 24 1987

...TORNADO WATCH FOR THE SIOUXLAND AREA UNTIL 1100 PM CDT TONIGHT...

AT 600 PM CDT STRONG THUNDERSTORMS CONTINUED IN MONONA COUNTY IN IOWA.
THESE STORM EXTENDED FROM 40 MILES SOUTHEAST OF SIOUX CITY TO 50 MILES
SOUTH OF SIOUX CITY. THEY WERE MOVING TO THE EAST AT 25 MILES AN HOUR.
INTENSE THUNDERSTORMS CONTINUED IN EASTERN NEBRASKA FROM YANKTON SOUTH
DAKOTA TO 30 MILES WEST OF SIOUX CITY TO JUST WEST OF COLUMBUS NEBRASKA.
THESE STORM WERE MOVING TO THE EAST AT 30 MILES AN HOUR. NO SEVERE
WEATHER HAD BEEN REPORTED IN THE SIOUXLAND AREA AS OF 600 PM CDT.

PERSONS ACROSS THE SIOUXLAND AREA SHOULD BE ON THE ALERT FOR THE
FORMATION OF SEVERE WEATHER AND TAKE SHELTER IF OBSERVED.  IF ANY
SEVERE WEATHER IS OBSERVED PLEASE RELAY REPORTS TO LOCAL LAW ENFORCEMENT
OFFICE OR CIVIL DEFENSE AGENCIES FOR RELAY TO THE NATIONAL WEATHER
SERVICE.]
ROSNER

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
635 PM CDT WED JUN 24 1987

AT 630 PM CDT...SCATTERED VERY HEAVY THUNDERSTORMS CONTINUED OVER PARTS
OF SOUTHEAST SOUTH DAKOTA...NORTHEAST NEBRASKA...SOUTHWEST MINNESOTA AND
INTO NORTHWEST IOWA.

THESE STORMS WERE MOSTLY SOUTHEAST OF A LINE FROM FLANDREAU TO YANKTON
WITH THE HEAVIEST STORMS LOCATED 20 MILES SOUTH OF SIOUX FALLS...10 MILES
EAST OF CENTERVILLE...5 MILES NORTHWEST OF ELK POINT AND 5 MILES WEST OF
ELLSWORTH MINNESOTA.  A SLIGHT DECREASE IN INTENSITY WAS ALSO NOTED.

THE STORMS OVER THE SOUTHEAST CORNER OF SOUTH DAKOTA COULD PRODUCE VERY
HEAVY RAIN...HAIL AND GUSTY WINDS.  PERSONS IN THE EXTREME SOUTHEAST
CORNER OF THE STATE SHOULD BE ALERT FOR THREATENING WEATHER CONDITIONS
AS THESE STORMS MOVE THROUGH.

MOVEMENT WAS EAST AT 35 MILES AN HOUR.
PFEIFFER

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
705 PM CDT WED JUN 24 1987

AT 700 PM CDT...THUNDERSTORMS...SOME OF THEM INTENSE WITH VERY HEAVY
RAIN...STRONG WINDS AND POSSIBLE HAIL...CONTINUED OVER PARTS OF SOUTH/
EAST SOUTH DAKOTA...SOUTHWEST MINNESOTA...NORTHWEST IOWA AND NORTHEAST
NEBRASKA.

THE LEADING EDGE OF THE THUNDERSTORMS EXTENDED FROM 100 MILES NORTHEAST
OF SIOUX FALLS NEAR REDWOOD FALLS MINNESOTA TO 55 MILES EAST OF SIOUX
FALLS NEAR WORTHINGTON MINNESOTA TO JUST EAST OF SIOUX CITY IOWA.

THE MOST INTENSE THUNDERSTORMS EXTENDED FROM 35 MILES EAST OF SIOUX
FALLS NEAR ADRIAN MINNESOTA TO 40 MILES SOUTH OF SIOUX FALLS NEAR AKRON
IOWA.

PEOPLE THROUGHOUT EXTREME SOUTHEAST SOUTH DAKOTA...SOUTHWEST MINNESOTA
...AND NORTHWEST IOWA SHOULD BE ALERT UNTIL 8 PM CDT FOR THESE STORMS
THAT WILL PRODUCE VERY HEAVY RAIN AND GUSTY WINDS OF 40 TO 50 MPH AS
THEY MOVE EAST AT 30 MPH.

THE BACK EDGE OF THESE THUNDERSTORMS WAS STILL IN SOUTHEAST SOUTH
DAKOTA FROM NEAR SIOUX FALLS TO NEAR YANKTON.
THEOPHILUS

STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
740 PM CDT WED JUN 24 1987

711 PM CDT...53 MPH WIND GUSTS AT SIOUX CENTER IOWA IN SIOUX COUNTY
             WHICH IS ABOUT 45 MILES SOUTHEAS4T OF SIOUX FALLS SOUTH
             DAKOTA.

738 PM CDT...PEA SIZED HAIL AND HEAVY RAIN AT WORTHINGTON MINNESOTA
             IN NOBLES COUNTY WHICH IS ABOUT 55 MILES EAST OF SIOUX
             FALLS SOUTH DAKOTA.
THEOPHILUS