Severe Thunderstorm Warning 141, NWS Sioux Falls, SD

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
1240 PM CDT TUE JUL 29 1986

AT 1230 PM CDT...SCATTERED SHOWERS AND THUNDERSTORMS
..AND AN ISOLATED INTENSE STORM WITH VERY HEAVY RAIN..
WERE OVER PARTS OF EASTERN SOUTH DAKOTA.

THE STRONGEST STORM WAS 15 MILES NORTHWEST OF MADISON..
OR 50 MILES NORTHWEST OF SIOUX FALLS.

THIS STORM WAS WITHIN A 40 MILE WIDE AREA THAT EXTENDED
FROM 35 MILES NORTHWEST OF HURON...TO NEAR MADISON.

SOME OF THESE STORMS MAY PRODUCE SMALL HAIL..
GUSTY WINDS..LIGHTNING STRIKES..AND VERY HEAVY RAINS.
PEA SIZE HAIL HAS BEEN REPORTED WITH SOME OF THESE STORMS.

OTHER SHOWERS WERE ALONG THE JAMES RIVER..FROM HURON TO ABERDEEN.
ALL MOVEMENT WAS EAST AT 30 MILES AN HOUR.

KRAUSE/MILLER

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
440 PM CDT TUE JUL 29 1986

...ISOLATED INTENSE THUNDERSTORM IN SOUTH CENTRAL SOUTH DAKOTA...

AN ISOLATED INTENSE THUNDERSTORM HAS DEVELOPED IN SOUTH CENTRAL
SOUTH DAKOTA ABOUT 55 MILES SOUTHWEST OF MITCHELL IN THE BONESTEEL AREA.
THIS THUNDERSTORM WAS MOVING TO THE EAST AT 25 MPH.

VERY HEAVY RAIN..SMALL HAIL AND STRONG GUSTYY WINDS ARE POSSIBLE WITH
THIS THUNDERSTORMS. PEOPLE IN THE SOUTH CENTRAL SOUTH DAKOTA COUNTIES
OF SOUTHEAST GREGORY..SOUTHERN CHARLES-MIX AND BON HOMME SHOULD BE
ALERT UNTIL 6 PM CDT..ESPECIALLY IN THE CITIES OF BONESTEEL..PICKSTOWN
..AVON..SPRINGFIELD AND TYNDALL. CAMPERS AND BOATERS ALONG MISSOU:RI
RIVER FROM JUST NORTH OF PICKSTOWN TO WEST OF YANKTON SHOULD ALSO BE
ALERT FOR THIS INTENSE THUNDERSTORM.
BEHREND

-DSMLSRSUX

STORM REPORT
NATIONAL WEATHER SERVICE SIOUX CITY IA
538 PM CDT TUE JUL 29 1986

          ...ALL TIMES CDT ON 28 JULY 1986...

          ...WOODBURY COUNTY IOWA...
750 PM    EXTENSIVE HAIL DAMAGE TO CARS AND WINN-A-BINGO HALL 4 MILES
          WEST OF SLOAN IOWA.
750 PM    TORNADO PASSED THROUGH SNYDER-S BEND STATE PART...ABOUT 15
          MILES SOUTH OF SIOUX CITY.  EXTENSIVE DAMAGE TO TREES.
800 PM    MOBILE HOME DESTROYED ONE MILE NORTH OF SLOAN.
          ...O-BRIEN COUNTY IOWA...
745 PM    MARBLE SIZE HAIL 6 MILES WEST OF PRIMGHAR.
800 PM    LARGE TREE...31/2 FT IN DIAMETER...DOWN 3 MILES EAST OF
          PRIMGHAR.
830 PM    FRONT WINDOW OF TV REPAIR SHOP IN SUTHERLAND BLOWN OUT.
830 PM    ALL THE FOLLOWING DAMAGE WAS REPORTED IN HARTLEY...68 MILES
          NORTHEAST OF SIOUX CITY.
          1. 24 BY 24 FT. METAL BLDG. DESTROYED. CONTENTS NOT TOUCHED.
          2. SUPERAMERICA MINI MART ROOF BLOWN OFF.
          3. MANY LARGE TREES DOWN. ONE MEASURED 21/2 FT DIAMETER.
835 PM    THREE SILOS DESTROYED ON FARM 4 MILES SOUTH OF HARTLEY.
835 PM    MACHINE SHED DESTROYED ON FARM 31/2 MILES EAST OF HARTLEY.
800 PM    WIND ESTIMATED 50 TO 55 MPH IN SANBORN.  MANY TREES 2 TO
          3 FT. DIAMETER BLOWN DOWN.  SOME TREES SPLIT IN TWO.
          ONE TREE FELL ON TOWN MEDICAL CENTER.
845 PM    ONE MILE SECTION OF CORNBELT POWER LINE...EAST OF HARTLEY
          ON THE O-BRIEN - CLAY COUNTY BORDER...BLOWN DOWN.
          TIME APPROXIMATED.
          ...CHEROKEE COUNTY IOWA...
823 PM    WIND GUST TO 81 MPH RECORDED AT CHEROKEE AIRPORT.
825 PM    WIND ESTIMATED AT 60 TO 65 MPH 5 MILES NORTH OF CHEROKEE.
          ...UNION COUNTY SOUTH DAKOTA...
830 PM    BASEBALL SIZE HAIL REPORTED AT JEFFERSON.  MANY WINDOWS
          BROKEN OUT.  HEN EGG SIZE HAIL AT ELK POINT.

REPORTS AND OBSERVATIONS INDICATED THE TORNADO PATH WAS ABOUT 45 MILES
IN LENGTH.  TOUCHDOWN WAS NEAR NEWCASTLE...IN NORTHERN DIXON COUNTY
WITH LAST OBSERVED LOCATION ABOUT 3 MILES SOUTHEAST OF SLOAN...JUST
INSIDE MONONA COUNTY IOWA. TORNADO OBSERVED FROM 6:30 PM TO 810 PM CDT.
SHERLIN

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
535 PM CDT TUE JUL 29 1986

AT 530 PM CDT...NUMEROUS THUNDERSTORMS...SOME OF WHICH WERE
INTENSE...CONTINUED DEVELOPING OVER SOUTHEAST SOUTH DAKOTA
AND NORTHEAST NEBRASKA.

THE STRONGEST STORMS WERE OVER SOUTHEAST SOUTH DAKOTA...50
MILES WEST OF YANKTON AND 30 MILES SOUTHWEST OF MITCHELL.
VERY HEAVY RAIN...STRONG WIND...AND HAIL ARE LIKELY WITH
THESE STORMS.

xIN NEBRSAKA...THE THUNDERSTORMS WERE NORTH OF A LINE FROM
ONEILL TO SIOUX CITY.

ALL OF THE STORMS WERE MOVING EAST AT 35 MILES AN HOUR.

SPRINGER