Severe Thunderstorm Warning 12, NWS Sioux Falls, SD

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
640 PM CDT SUN JUN 7 1987

...SEVERE THUNDERSTORM WATCH FOR SOUTHEASTERN SOUTH DAKOTA AND MUCH
OF MINNESOTA UNTIL 10 PM CDT...

AT 630 PM CDT...ONLY ISOLATED THUNDERSTORMS REMAINED IN SOUTH
DAKOTA. THE STRONGEST THUNDERSTORM WAS LOCATED 35 MILES WEST OF
YANKTON.

MUCH STRONGER THUNDERSTORMS HAD MOVED INTO THE NORTHWESTERN CORNER
OF IOWA. THESE THUNDERSTORMS WERE IN A 20 MILE WIDE AREA EXTENDING
FROM 20 MILES SOUTHEAST OF SIOUX FALLS...TO ESTERVILLE IOWA...WHICH
IS 90 MILES EAST OF SIOUX FALLS.

MOVEMENT WAS SOUTHEAST AT 25 MILES AN HOUR.
ORGISH

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
705 PM CDT SUN JUN 7 1987

...A SEVERE THUNDERSTORM WARNING FOR LYON COUNTY IN NORTHWEST
IOWA UNTIL 715 PM CDT...
... A SEVERE THUNDERSTORM WATCH FOR SOUTHEAST SOUTH DAKOTA AND
PARTS OF SOUTHWEST MINNESOTA AND NORTHWEST IOWA UNTIL 10 PM CDT...

AT 700 PM CDT SEVERE THUNDERSTORMS WERE OVER NORTHWEST IOWA...ONE
EAST OF INWOOD AND THE OTHER NEAR GEORGE BOTH IN LYON COUNTY.
THESE SEVERE THUNDRSTORMS WERE MOVING EAST SOUTHEAST AT 20 MILES AN HOUR
AND ARE CAPABLE OF PRODUCING WIND GUSTS OF 60 MPH OR GREATER...HAIL 3/4
INCH OR LARGER...DEADLY LIGHTNING AND HEAVY RAIN THAT CAN FLOOD LOW
LYING AREAS RAPIDLY.

PRESONS IN LY:ON COUNTY INCLUDING THE COMMUNITIES OF INWOOD AND GEOROGE
SHOULD BE ON THE LOOKOUT FOR THESE STORMS THROUGH 8 PM CDT.            WENT BACKBUSS

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
730 PM CDT SUN JUN 7 1987

...SEVERE THUNDERSTORM WATCH FOR EXTREME SOUTHEAST SOUTH DAKOTA AND
PARTS OF SOUTHERN MINNESOTA AND NORTHWEST IOWA UNTIL 10 PM CDT...

ONLY THAT PART OF SOUTH DAKOTA SOUTHEAST OF A LINE FROM PICKSTOWN TO
SIOUX FALLS REMAINS IN A SEVERE THUNDERSTORM WATCH UNTIL 1000 PM CDT.

AT 730 PM CDT INTENSE THUNDERSTORMS WERE SCATTERED FROM 25 MILES
SOUTHWEST OF SIOUX FALLS NEAR HURLEY EAST TO THE SHELDON AREA IN
NORTHWEST IOWA. THESE STORMS WERE MOVING EAST/SOUTHEAST AT 15 MPH
AND CAN PRODUCE BRIEF HEAVY RAINS..SMALL HAIL...AND GUSTY WINDS TO
PERHAPS 40 MPH.

PEOPLE IN THE CITIES OF SIOUX CENTERO AND ALTON IN IOWA...AND BERESFORD
AND CENTERVILLE IN SOUTH DAKOTA CAN EXPECT THESE THUNDERSTORMS BETWEEN
800 AND 830 M CDT.
KAPELA

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
800 PM CDT SUN JUN 7 1987

...SEVERE THUNDERSTORM WATCH FOR EXTREME SOUTHEAST SOUTH DAKOTA AND
PARTS OF SOUTHERN MINNESOTA AND NORTHWEST IOWA UNTIL 10 PM CDT...

AT 800 PM CDT A INTENSE THUNDERSTORM WAS LOCATED 25 MILES SOUTHWEST
OF SIOUX FALLS NEAR INWOOD IOWA. THIS INTENSE STORM CAN PRODUCE SMALL
HAIL...GUSTY WINDS TO 40 MPH AND HEAVY RAINS AS IT MOVES EAST AT
15 MPH.

OTHER SCATTERED THUNDERSHOWERS WERE LOCATED 25 MILES SOUTH OF SIOUX
FALLS NEAR BERESFORD. OTHER SCATTERED SHOWERS WERE FOUND OVER
SOUTHWEST MINNESOTA NEAR LAKEFIELD...AND IN NORTHWEST IOWA NEAR
LAKE OKOBJI. ALL OF THESE SHOWERS WERE MOVING SOUTHmEAST AT 15 MPH.
KAPELA

SPECIAL WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE SIOUX FALLS SD
800 PM CDT SUN JUN 7 1987

...SEVERE THUNDERSTORM WATCH FOR EXTREME SOUTHEAST SOUTH DAKOTA AND
PARTS OF SOUTHERN MINNESOTA AND NORTHWEST IOWA UNTIL 10 PM CDT...

AT 800 PM CDT A INTENSE THUNDERSTORM WAS LOCATED 25 MILES SOUTHEAST
OF SIOUX FALLS NEAR INWOOD IOWA. THIS INTENSE STORM CAN PRODUCE SMALL
HAIL...GUSTY WINDS TO 40 MPH AND HEAVY RAINS AS IT MOVES EAST AT
15 MPH.

OTHER SCATTERED THUNDERSHOWERS WERE LOCATED 25 MILES SOUTH OF SIOUX
FALLS NEAR BERESFORD. OTHER SCATTERED SHOWERS WERE FOUND OVER
SOUTHWEST MINNESOTA NEAR LAKEFIELD...AND IN NORTHWEST IOWA NEAR
LAKE OKOBJI. ALL OF THESE SHOWERS WERE nMOVING SOUTHEAST AT 15 MPH.
KAPELA

STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1000 PM CDT SUN JUN 7 1987

955 PM CDT...PEA TO MARBLE SIZE HAIL AND HEAVY RAIN AT GARRETSON SD IN
             EAST CENTRAL MINNEHAHA COU
NTY. WIND ONLY 10 TO 15 MPH.

WILLIAMS