Severe Thunderstorm Warning 23, NWS Sioux Falls, SD

SDZ017>020-MNZ017-230500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1102 PM CDT TUE MAY 22 1990

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 2 AM...

AT 11 PM CDT THUNDERSTORMS WITH VERY HEAVY RAIN WERE SCATTERED ACROSS
SOUTHEAST SOUTH DAKOTA AND SOUTHWEST MINNESOTA.

IN SOUTH DAKOTA THE STRONGEST STORMS WERE LOCATED IN A LINE FROM 100
MILES WEST OF SIOUX FALLS NEAR LAKE FRANCIS TO 35 MILES SOUTHWEST OF
SIOUX FALLS NEAR ILENE. ANOTHER AREA OF STRON THUNDERSTORMS WERE
LOCATED 45 MILES NORTH OF SIOUX FALLS NEAR BROOKINGS.

IN SOUTHWEST MINNESOTA THE STRONGEST STORMS WERE LOCATED 50 MILES
NORTHEAST OF SIOUX FALLS NEAR SLAYTON.

THESE STORMS ARE CAPABLE OF PRODUCINGA HAIL...STRONG WINDS AND
VERY HEAVY RAINS AS THEY MOVE EAST/SOUTHEAST AT 20 MPH.

IAZ004-230500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX CITY IA
1110 PM CDT TUE MAY 22 1990

...A SEVERE THUNDERSTORM WATCH UNTIL 2 AM CDT...

AT 11:10 PM RADAR SHOWED SHOWERS AND THUNDERSTORMS FROM ELK POINT
SOUTH DAKOTA...20 MILES NORTHWEST OF SIOUX CITY...EXTENDING NORTHWEST
TO 100 MILES WEST OF SIOUX FALLS. THE MOST INTENSE THUNDERSTOMS WERE
NORTH AND WEST OF YANKTON. SCATTERED SHOWERS WERE ALSO DEVELOPING IN
WESTERN IOWA. NO RAIN WAS DETECTED IN NORTHEAST NEBRASKA.

THESE STORMS MAY PRODUCE LARGE HAIL...HEAVY RAIN AND DAMAGING WIND
AS THEY MOVE SOUTHEAST AT 25 MILES AN HOUR. THE THUNDERSTORMS WILL
ALSO MOVE INTO NORTHEAST NEBRASKA.

QUINN

SDZ017-MNZ017-230430-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1116 PM CDT TUE MAY 22 1990

...SEVERE THUNDERSTORM WARNING HAS EXPIRED FOR BROOKINGS COUNTY OF
SOUTH DAKOTA AND FOR NORTHERN MURRAY AND NORTHERN PIPESTONE COUNTIES
OF SOUTHWEST MINNESOTA...

AT 1115 PM CDT RADAR INDICATED THAT THE THUNDERSTORMS HAVE WEAKENED
AND NO LONGER APPEAR TO BE SEVERE.

THE THUNDERSTORMS WERE LOCATED 45 MILES NORTHWEST OF SIOUX FALLS TOR
JUST WEST OF BROOKINGS...AND 45 MILES NORTHEAST OF SIOUX FALLS NEAR
SLAYTON MINNESOTA.

ALTHOUGH THESE STORMS NO LONGER APPEAR TO BE SEVERE...THEY ARE
STILL CAPABLE OF PRODUCING HEAVY RAINS...SMALL HAIL AND GUSTY
WINDS.

IAZ004-230600-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX CITY IA
1140 PM CDT TUE MAY 22 1990

...A SEVERE THUNDERSTORM WATCH UNTIL 2 AM CDT...

AT 11:40 PM RADAR SHOWED NUMEROUS SHOWERS AND THUNDERSTORMS IN
SOUTHEAST SOUTH DAKOTA AND WITHIN 35 MILES OF THE MISSOURI RIVER IN
WEST IOWA. ONE INTENSE THUNDERSTORM WAS NEAR ALCESTER SOUTH DAKOTA
OR 35 MILES NORTHWEST OF SIOUX CITY. ANOTHER INTENSE THUNDERSTORM WAS
SOUTH OF ONAWA IOWA OR 40 MILES SOUTH OF SIOUX CITY.

THESE STORMS MAY PRODUCE LARGE HAIL...HEAVY RAIN AND DAMAGING WIND
AS THEY MOVE SOUTHEAST AT 25 MILES AN HOUR.

QUINN

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
1145 PM CDT TUE MAY 22 1990

...A SEVERE THUNDERSTORM WATCH CONTINUED FOR PARTS OF CENTRAL AND
EASTERN SOUTH DAKOTA...PARTS OF SOUTHWEST MINNESOTA AND PARTS OF
NORTHWEST IOWA UNTIL 200 AM CDT...

AT 1130 PM CDT...NUMEROUS THUNDERSTORMS WERE OCCURRING IN NORTHEAST
SOUTH DAKOTA. THE THUNDERSTORMS WERE LOCATED NORTH OF A HURON/BROOKINGS
LINE. THE STRONGEST STORM WAS LOCATED OVER SOUTHERN CLARK COUNTY NEAR
WILLOW LAKE OR ABOUT 30 MILES NORTHEAST OF HURON.

ELSEWHERE NUMEROUS THUNDERSTORMS WERE OCCURING OVER PARTS OF SOUTHEAST
AND CENTRAL SOUTH DAKOTA. THE THUNDERSTORMS WERE LOCATED SOUTH OF A
CHAMBERLAIN/MITCHELL/BERESFORD LINE. THE STRONGEST STORM WAS LOCATED
ALONG THE MISSOURI RIVER ABOUT 10 MILES WEST OF PICKSTOWN.

MOVEMENT OF ALL STORMS WAS SOUTHEAST AT 35 MILES AN HOUR.
MILLER

SDZ015>017-019-020-MNZ017-IAZ001-230630-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1200 AM CDT WED MAY 23 1990

...FLASH FLOOD WATCH AND SEVERE THUNDERSTORM WARNING FOR PARTS OF
SOUTH CENTRAL AND SOUTHEAST SOUTH DAKOTA...

A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL AND
SOUTHERN CHARLES MIX COUNTY AND FOR SOUTHEAST GREGORY COUNTY IN
SOUTH CENTRAL SOUTH DAKOTA UNTIL 1215 PM CDT. A FLASH FLOOD WATCH
REMAINS IN EFFECT UNTIL 2 AM CDT FOR EXTREME SOUTH CENTRAL AND EXTREME
SOUTHEAST SOUTH DAKOTA.

A LARGE AREA OF THUNDERSTORMS...SOME WITH VERY HEAVY RAIN...HAIL OR
STRONG WINDS...CONTINUED TO MOVE OVER EXTREME SOUTH CENTRAL AND
SOUTHEAST SOUTH DAKOTA...NORTHWEST IOWA AND SOUTHWEST MINNESOTA.
THE THUNDERSTORMS WERE MOVING SOUTHEAST AT 20 MPH.

RESIDENTS AND THOSE TRAVELING IN THESE AREAS SHOULD BE PREPARED
FOR THIS ADVERSE WEATHER. MOVE TO HIGHER GROUND IF FLOODING OCCURS.
MOVE TO A REINFORCED SHELTER OF HAIL OR STRONG WINDS THREATEN.

SCATTERED THUNDERSTORMS WILL CONTINUE IN THESE AREAS THE REMAINDER
OF THE NIGHT.
BLOOM