SNOWFALL RECORDS FOR SIOUX FALLS, SD
COMPILED BY THE NATIONAL WEATHER SERVICE IN SIOUX FALLS
SIOUX FALLS SNOWFALL RECORDS...1893- 9/11/2007
GREATEST SEASONAL SNOWFALL 94.7 INCHES 1968-69
GREATEST 24 HOUR STORM 26.0 INCHES FEB. 17-18, 1962
GREATEST STORM TOTAL 32.2 INCHES FEB. 16-18, 1962
GREATEST MONTHLY TOTAL 48.4 INCHES FEB. 1962
EARLIEST SNOWFALLS (24 HR PERIOD)...
TRACE... SEP. 18, 1929
MEASURABLE... 0.9 INCH SEP. 28, 1985
SIGNIFICANT... 2.7 INCHES OCT. 1, 1999
HEAVY... 11.2 INCHES OCT. 31-NOV. 1, 1991
LATEST SNOWFALLS...
TRACE... MAY 31, 1954
MEASURABLE... 0.1 INCH MAY 18, 1968
SIGNIFICANT... 2.0 INCHES MAY 13, 1943
HEAVY... 10.5 INCHES APR. 28, 1994
MAXIMUM SNOW DEPTH 34.0 INCHES DEC. 31, 1968; FEB. 28, 1969
NUMBER OF PAST HEAVY SNOW EVENTS (IN 24 HOURS)...
BY MONTH...1893- 9/11/2007
6 INCHES OR MORE 10 INCHES OR MORE 14 INCHES OR MORE
OCTOBER 2 1 0
NOVEMBER 17 4 0
DECEMBER 25 5 1
JANUARY 17 3 0
FEBRUARY 29 7 3
MARCH 35 10 3
APRIL 8 2 0
TOTAL 133 32 7
SNOWIEST BY MONTH...
SEPTEMBER 0.9 INCH IN 1985
OCTOBER 10.0 INCHES IN 1991
NOVEMBER 21.9 INCHES IN 1985
DECEMBER 41.1 INCHES IN 1968
JANUARY 22.2 INCHES IN 1929
FEBRUARY 48.4 INCHES IN 1962
MARCH 31.5 INCHES IN 1951
APRIL 18.4 INCHES IN 1983
MAY 3.0 INCHES IN 1944
NOTE THAT THESE ARE THE "OFFICIAL" SNOWFALL AMOUNTS REPORTED
AT THE OBSERVING LOCATION AND ARE NOT NECESSARILY THE SAME AS
ELSEWHERE IN THE SIOUX FALLS AREA. IN ADDITION WIDE-OPEN AIRPORT
AREAS CAN BE POOR LOCATIONS TO MEASURE SNOW DUE TO THE WIND EFFECTS
THAT CAN BLOW THE SNOW AROUND AND ALSO COMPRESS IT. THIS CAN CAUSE
AN UNDERESTIMATION IN THE SNOWFALL MEASUREMENT.
RICHARD S. RYRHOLM 9/11/2007
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