Severe Thunderstorm Warning 86, NWS Sioux Falls, SD

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
315 PM CDT SAT JUL 11 1987

AT 305 PM CDT RADAR INDICATED 2 INTENSE THUNDERSTORMS WITH VERY HEAVY
RAIN OVER SIOUX COUNTY IOWA. THE STRONGEST WAS LOCATED 7 MILES EAST
OF SIOUX CENTER IOWA AND THE OTHER WAS LOCATED 12 MILES SOUTHWEST OF
SIOUX CENTER. THE STORMS WERE MOVING TO THE EAST AT 25 MPH.

PEOPLE IN THE PATH OF THESE STORMS SHOULD BE ON THE LOOKOUT FOR POSSIBLE
SEVERE WEATHER IN THE FORM OF LARGE HAIL AND STRONG GUSTY WINDS.
KOSCIELSKI

^DSMSPSSUX
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX CITY IA
335 PM CDT SAT JUL 11 1987

...SEVERE THUNDERSTORM WATCH UNTIL 9PM CDT THIS SATUDAY NIGHT...

AT 330 PM CDT SCATTERED SHOWERS AND THUNDERSTORMS CONTINUED IN A 30
MILE WIDE LINE FROM 90 MILES NORTHEAST OF SIOUX CITY IOWA TO COLUMBUS
NEBRASKA. THE STRONGEST STORMS WERE 5 MILES SOUTHEAST OF HAWARDEN IOWA
OR 45 MILES NORTH OF SIOUX CITY AND 5 MILES EAST OF SHELDON IOWA 60
MILES NORTHEAST OF SIOUX CITY. THESE THUNDERSTORMS WERE MOVING TO THE
NORTHEAST AT 30 MILES AN HOUR.

PEOPLE IN NORTHERN OBRIEN COUNTY AND SIOUX COUNTY IN IOWA SHOULD REMAIN
ALERT AND BE PREPARED TO TAKE COVER IF SEVERE WEATHER IS OBSERVED. THESE
THUNDERSTORMS ARE CAPABLE OF PRODUCING LARGE HAIL...STRONG GUSTY WIND...
DANGEROUS LIGHTNING AND VERY HEAVY RAIN.
ROSNER

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
400 PM CDT SAT JUL 11 1987

...INTENSE THUNDERSORMS ACROSS THE EXTREME SOUTHEAST CORNER OF
SOUTH DAKOTA AND NORTHWEST IOWA...

AT 4 PM CDT INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN CONTINUED
ACROSS THE EXTREME SOUTHEAST CORNER OF SOUTH DAKOTA AND NORTHWEST
IOWA.

THESE THUNDERSTORM WERE IN A BAND EXTENDING FROM 60 MILES SOUTH OF
SIOUX FALLS...NEAR ELK POINT SOUTH DAKOTA TO 75 MILES EAST OF SIOUX
FALLS...NEAR MILFORD IOWA.

THESE THUNDERSTORMS ARE CAPALBE OF PRODUCING VERY HEAVY RAIN...HAIL
...STRONG GUSTY WINDS AND DANGEROUS LIGHNING AS THEY MOVE NORTHEAST
AT 25 MILES AN HOUR.
BUSS

RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
440 PM CDT SAT JUL 11 1987

AT 430 PM CDT..SCATTERED INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN
CONTINUED TO DEVELOP OVER EXTREME SOUTHEAST SOUTH DAKOTA AND NORTHWEST
IOWA.

THE THUNDERSTORMS WERE LOCATED EAST OF A LINE FROM SIOUX FALLS
SOUTH DAKOTA TO SIOUX CITY IOWA. THE STRONGEST THUNDERSTORM WAS
30 MILES SOUTHEAST OF SIOUX FALLS. MOVEMENT WAS NORTHEAST AT 30 MILES
AN HOUR.

OTHERWISE...SCATTERED THUNDERSTORMS CONTINUED TO DEVELOP OVER CENTRAL
AND SOUTH CENTRAL SOUTH DAKOTA.

THE AREA OF PRECIPITATION WAS WEST OF A LINE FROM 40 MILES NORTHWEST OF
PIERRE TO 60 MILES SOUTHWEST OF WINNER. THE STRONGEST STORMS WERE 50
MILES NORTHW%EST OF WINNER...IN WESTERN MELLETTE COUNTY AND 40 MILES WEST
OF PIERRE...NEAR SANSARC. THESE STORMS WERE MOVING EAST AT 40 MILES AN HOUR.

EDDY

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
440 PM CDT SAT JUL 11 1987

AT 430 PM CDT..SCATTERED INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN
CONTINUED TO DEVELOP OVER EXTREME SOUTHEAST SOUTH DAKOTA AND NORTHWEST
IOWA.

THE THUNDERSTORMS WERE LOCATED EAST OF A LINE FROM SIOUX FALLS
SOUTH DAKOTA TO SIOUX CITY IOWA. THE STRONGEST THUNDERSTORM WAS
30 MILES SOUTHEAST OF SIOUX FALLS. MOVEMENT WAS NORTHEAST AT 30 MILES
AN HOUR.

OTHERWISE...SCATTERED THUNDERSTORMS CONTINUED TO DEVELOP OVER CENTRAL
AND SOUTH CENTRAL SOUTH DAKOTA.

THE AREA OF PRECIPITATION WAS WEST OF A LINE FROM 40 MILES NORTHWEST OF
PIERRE TO 60 MILES SOUTHWEST OF WINNER. THE STRO(NGEST STORMS WERE 50
MILES NORTHWEST OF WINNER...IN WESTERN MELLETTE COUNTY AND 40 MILES WEST
OF PIERRE...NEAR SANSARC. THESE STORMS WERE MOVING EAST AT 40 MILES AN HOUR.

EDDY