Severe Thunderstorm Warning 166, NWS Sioux Falls, SD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
255 PM CDT SAT AUG 9 1986

...TORNADO WATCH FOR MUCH OF CENTRAL AND EASTERN SOUTH DAKOTA...

AT 245 PM CDT NATIONAL WEATHER SERVICE RADAR SHOWED INTENSE
THUNDERSTORMS WITH VERY HEAVY RAIN AND HAIL IN TRIPP COUNTY OF
SOUTH CENTRAL SOUTH DAKOTA. THE MOST INTENSE THUNDERSTORMS WERE
15 MILES NORTHWEST OF WINNER AND OVER THE SOUTHWEST BORDER OF
TRIPP COUNTY MOVING SOUTHEAST AT 25 MPH.

A SEVERE THUNDERSTORM WARNING FOR EASTERN TODD COUNTY WILL EXPIRE
AT 3 PM CDT AND WILL NOT BE REISSUED AS THUNDERSTORMS HAVE DIMINISHED
IN INTENSITY.

NUMEROUS REPORTS HAVE BEEN MADE BY THE PUBLIC OF FUNNEL CLOUDS IN
WESTERN TRIPP COUNTY BETWEEN 2 AND 3 PM CDT. HOWEVER NONE OF THE FUNNEL
CLOUDS WAS OBSERVED TO TOUCH DOWN..AND NO DAMAGE HAS BEEN REPORTED.

THUNDERSTORMS CONTINUE FROM NORTHEAST THROUGH SOUTH CENTRAL SOUTH DAKOTA
AND SOME SEVERE WEATHER IS POSSIBLE. A TORNADO WATCH IS IN EFFECT UNTIL
730 PM CDT FOR MUCH OF CENTRAL AND EAST SOUTH DAKOTA.

UMLAND

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
340 PM CDT SAT AUG 9 1986

...TORNADO WATCH FOR MUCH OF EASTERN AND SOUTHEASTERN FOUTH DAKOTA
   UNTIL 730 PM CDT...

AT 330 PM CDT...A LINE OF INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN
WAS MOVING ACROSS EAST CENTRAL SOUTH DAKOTA..IN A 20 MILE WIDE BAND
FROM 50 MILES NORTHEAST OF HURON TO 20 MILES SOUTHWEST OF HURON.

STRONG WINDS..DANGEROUS LIGHTNING AND HAIL ARE POSSIBLE WITH THESE
THUNDERSTORMS IN BEADLE AND CLARK COUNTIES.

SCATTERED THUNDERSTORMS CONTINUED ACROSS PORTIONS OF EASTERN SOUTH
DAKOTA..IN A 50 MILE WIDE AREA FROM THE NORTHEAST CORNER OF SOUTH
DAKOTA TO 30 MILES SOUTH OF WINNER.

MOVEMENT WAS SOUTHEAST AT 25 MILES AN HOUR.
STOREY

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
410 PM CDT SAT AUG 9 1986

...TORNADO WATCH FOR MUCH OF CENTRAL AND EASTERN SOUTH DAKOTA...

AT 405 PM CDT INTENSE THUNDERSTORMS WITH HEAVY RAIN AND HAIL WERE IN
EASTERN SOUTH DAKOTA ABOUT 20 MILES NORTHWEST OF MITCHELL BETWEEN
PLANKINTON AND WESSINGTON. THE THUNDERSTORMS WERE MOVING SOUTHEAST AT
25 MPH AND WILL MOVE INTO MITCHELL BEFORE 5 PM CDT.

PERSONS IN DAVIDSON AND HANSON COUNTIES SHOULD BE ALERT FOR THE
DEVELOPMENT OF SEVERE WEATHER. HEAVY RAIN..HAIL..AND WINDS GUSTS
OVER 45 MPH ARE LIKELY.

MOTORISTS ON INTERSTATE 90 AND OTHER HIGHWAYS SHOULD BE PREPARED TO
SLOW DOWN OR STOP WHEN ENCOUNTER THE VERY HEAVY RAINFALL WHILL WILL
LIMIT VISIBILITY.

TORNADO WATCH 482 CONTINUES IN EFFECT UNTIL 730 PM CDT FOR MUCH OF
CENTRAL AND EAST SOUTH DAKOTA.

UMLAND

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
440 PM CDT SAT AUG 9 1986

...TORNADO WATCH FOR MUCH OF EASTERN AND SOUTHEASTERN FOUTH DAKOTA
   UNTIL 730 PM CDT...

AT 425 PM CDT...A LINE OF INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN
CONTINUED MOVING ACROSS PARTS OF EAST CENTRAL AND NORTHEAST SOUTH DAKOTA.

THE THUNDERSTORMS WERE EAST OF HURON/SISSETON LINE.

THE MOST INTENSE THUNDERSTORM WAS LOCATED ALONG THE SANBORN/DAVIDSON
LINE..25 MILES NORTH OF MITCHELL.

STRONG WINDS..DANGEROUS LIGHTNING AND HAIL ARE POSSIBLE WITH THESE
THUNDERSTORMS.

MOVEMENT WAS SOUTHEAST AT 25 MILES AN HOUR.
MILLER/STOREY

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
510 PM CDT SAT AUG 9 1986

...TORNADO WATCH IN EFFECT FOR MUCH OF CENTRAL AND EASTERN SOUTH
DAKOTA UNTIL 730 PM CDT...

WIDELY SCATTERED INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN WERE IN A
LINE FROM LAKE ANDES..75 MILES SOUTH SOUTHWEST OF HURON TO EAST
CENTRAL SOUTH DAKOTA. AT 510 PM CDT THE MOST INTENSE THUNDERSTORM
WAS LOCATED NEAR LAKE ANDES..OR 75 MILES SOUTH SOUTHWEST OF HURON.
THIS LINE CONTAINED NEARLY SOLID SHOWERS AND OTHER THUNDERSTORMS.

THE INTENSE THUNDERSTORMS WILL PRODUCE VERY HEAVY RAIN..STRONG WINDS
AND SMALL HAIL THIS EVENING AS THEY MOVE SOUTHEAST AT 35 MPH OVER
SOUTHEAST AND EAST CENTRAL SOUTH DAKOTA. AT 450 PM CDT WINDS OF 50 TO
60 MPH WERE REPORTED TWO MILES NORTH OF MITCHELL.

THE LINE OF THUNDERSTORMS WILL MOVE SOUTHEAST AND AT ITS PRESENT SPEED
WILL ENTER SIOUX FALLS BY 630 PM CDT.

PERSONS OUTDOORS SHOULD BE AWARE OF THE THUNDERSTORMS AND THEIR
POTENTIAL FOR SEVERE WEATHER THIS EVENING IN THE SOUTHEAST AND
EAST CENTRAL PART OF AOUTH DAKOTA AS WELL AS ADJOINING PORTIONS
OF NORTHWEST IOWA AND SOUTHWEST MINNESOTA.

THE THUNDERSTORMS WERE BEING CAUSED BY A FAST MOVING COLDV FRONT
WHICH EXTENDED FROM NORTH CENTRAL MINNESOTA TO SOUTHERN WYOMING
LATE SATURDAY EVENING.
WEILAND

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
540 PM CDT SAT AUG 9 1986

...TORNADO WATCH FOR MUCH OF EASTERN AND SOUTHEASTERN FOUTH DAKOTA
   UNTIL 730 PM CDT...

AT 525 PM CDT...A LINE OF INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN
CONTINUED MOVING ACROSS PARTS OF EASTERN AND SOUTHEAST SOUTH DAKOTA.

THE THUNDERSTORMS WERE EAST OF WATERTOWN/MITCHELL/PICKSTOWN LINE.

THE MOST INTENSE THUNDERSTORM WAS OVER WESTERN mBROOKINGS COUNTY NEAR
ARLINGTON..20 MILES WEST OF BROOKINGS.

STRONG WINDS..DANGEROUS LIGHTNING AND HAIL ARE POSSIBLE WITH THESE
THUNDERSTORMS.

MOVEMENT WAS SOUTHEAST AT 25 MILES AN HOUR.
MILLER/STOREY