Severe Thunderstorm Warning 42, NWS Sioux Falls, SD

SDZ004-005-010>012-015>020-130200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
615 PM CDT TUE JUN 12 1990

...WEATHER SHOULD CHANGE RAPIDLY FOR THE SOUTHEAST HALF OF SOUTH DAKOTA
THIS EVENING...

A WIND SHIFT WILL MOVE EAST/NORTHEAST OVER CENTRAL SOUTH DAKOTA TOWARDS
THE JAMES RIVER THROUGH 9 PM CDT AND SHOULD BE FOLLOWED BY BRISK
SOUTHWEST WINDS OF 20 TO 35 MPH. THESE WINDS WERE THE RESULT OF SOME
THUNDERSTORMS DEVELOPING FROM NORTHCENTRAL NEBRASKA INTO CENTRAL SOUTH
DAKOTA. BOATERS ON THE MISSOURI RIVER RESERVIORS SHOULD BEWARE OF THIS
WIND SHIFT AND POSSIBLE THUNDERSTORM DEVELOPMENT UNTIL ABOUT 9 PM CDT.

IN ADDITION SOME THUNDERSTORMS SHOULD DEVELOP IN EASTERN SOUTH DAKOTA
DURING THE EVENING. A FEW OF THE THUNDERSTORMS COULD BECOME LOCALLY
SEVERE SO PLEASE KEEP UP TO DATE ON THE LATEST DEVELOPMENTS.

RYRHOLM

SDZ011-017-019-120045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
645 PM CDT TUE JUN 12 1990

...SCATTERED STRONG THUNDERSTORMS WITH HEAVY RAIN WERE DEVELOPING IN A
30 MILE WIDE AREA FROM 20 MILES EAST OF HURON TO BONESTEEL IN SOUTHEAST
GREGORY COUNTY SOUTH DAKOTA. THE STRONGEST STORM WAS LOCATED ABOUT 15
MILES EAST OF HURON. THE STORMS WERE MOVING NORTHEAST AT 40 MPH.

COME COUNTIES EFFECTED FROM 645 PM CDT TO 745 PM CDT ARE KINGSBURY...
MINOR...DAVISAON...HANSON...DOUGLAS...AND CHARLES MIX.
KOSCIELSKI

SDZ011-017-019-130100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
705 PM CDT TUE JUN 12 1990

...TORNADO WATCH IN EFFECT FOR SOUTHEAST SOUTH DAKOTA UNTIL 1 AM CDT...

AT 7 PM CDT SCATTERED SHOWERS AND THUNDERSTORMS CONTINUED IN SOUTHEAST
AND SOUTH CENTRAL SOUTH DAKOTA.

THIS PRECIPITATION EXTENDED FROM 50 MILES WEST OF YANKTON NEAR BUTTE
SOUTH DAKTA TO 35 MILES NORTHWEST OF BROOKINGS NEAR HAYTI.
 BERG

SDZ017-018-020-130200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
720 PM CDT TUE JUN 12 1990

A WIND SHIFT WILL MOVE EAST OVER SOUTHEAST SOUTH DAKOTA THROUGH 9 PM
CDT AND SHOULD BE FOLLOWED BY BRIEF WESTERLY WINDS OF 20 TO 45 MPH.
AT 715 PM CDT 40 TO 50 MPH WINDS WERE REPORTED AT MITCHELL. THESE
WINDS WERE THE RESULT OF THUNDERSTORMS DEVELOPING NEAR THE JAMES
RIVER. BOATERS ON LEWIS AND CLARK LAKE SHOULD BEWARE OF THIS WIND
SHIFT AND POSSIBLE THUNDERSTORM DEVELOPMENT UNTIL ABOUT 9 PM CDT.

RYRHOLM

SDZ004-011-130130-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
740 PM CDT TUE JUN 12 1990

AT 730 PM CDT...SCATTERED THUNDERSTORMS WITH VERY HEAVY RAIN CONTINUED
OVER PARTS OF EASTERN SOUTH DAKOTA.

THESE STORMS WERE MOSTLY EAST OF A LINE FROM LEOLA TO PICKSTOWN WITH THE
STRONGEST STORMS LOCATED JUST NORTH AND SOUTH OF DOLAND...10 MILES SOUTH
OF IROQUOIS AND JUST SOUTHEAST OF ARTESIAN.

THESE STORMS ARE CABABLE OF PRODUCING VERY HEAVY RAINS...HAIL AND STRONG
GUSTY WINDS.  PERSONS IN CLARK...KINGSBURY AND MINER COUNTIES SHOULD BE ON
THE ALERT FOR RAPIDLY CHANGING WEATHER AS THESE STORMS WILL MOVE THROUGH
THE ABOVE MENTIONED COUNTIES BY 815 PM CDT.

MOVEMEJNT WAS NORTHEAST AT 45 MILES AN HOUR.

PFEIFFER

SDZ017-018-019-020-MNZ017-130200-

SPECIAL WEATHER STATEMENT AND LOCAL RADAR SUMMARY
NATIONAL WEATHER SERVICE SIOUX FALLS SD
800 PM CDT TUE JUN 12 1990

...TORNADO WATCH FOR FAR SOUTHEAST SOUTH DAKOTA UNTIL 1 AM CDT...

AT 800 PM CDT A LINE OF SCATTERED THUNDERSTORMS WAS DEVELOPING FROM
EXTREME SOUTHCENTRAL SOUTH DAKOTA THROUGH A PART OF SOUTHEAST SOUTH
DAKOTA INTO SOUTHWEST MINNESOTA. SOME OF THE HEAVIEST THUNDERSTORMS
WERE LOCATED WEST OF SCOTLAND OR 60 MILES SOUTHWEST OF SIOUX FALLS...
EAST OF ALEXANDRIA OR 40 MILES WEST/NORTHWEST OF SIOUX FALLS...AND
IN SOUTHWEST MINNESOTA EXTENDING FROM EAST OF PIPESTONE TO 50 MILES
OF PIPESTONE. THE THUNDERSTORMS WERE MOVING EAST/NORTHEAST AT 30 MPH.
RTYRHOLM