Ice Out Dates on Black Oak Lake


A typical spring situation sees the south facing shoreline receiving more and more heat as the sun tracks higher in the southern sky. The ice will melt off of those south and west facing banks and the widening strip of open water along those shores. Meanwhile the overall ice sheet is hollowing out from beneath, called “honeycombing”. Though the vast majority of the lake still appears to be covered the ice is very weak. Then a warm south wind comes up and if it is gusty enough the ice will be gone in two to three hours.

The DNR’s definition of “ice-out” is the first day that all ice is gone. Since ice-out is normally a rather sudden and sometimes noisy event, these dates have been recorded here since 1909. Emil Wiesse, who lived in Barber’s Bay (then called Wiesse Bay), recorded them through 1921. Janet Vineyard’s family, the Handlos’, then recorded them through 1965. Jim Lowenstine’s caretakers took over through 1997 and John Annin and Walt Bates have recorded them since then. The earliest was on March 24 (2012) and the latest was on May 17 (1996). The overall average date is April 26. Note that two days have been added (in 2016) to the inaccurately recorded ice-out dates for the 12 year period from 1998 to 2009. This was due to an incorrect definition of ice out during that period. For complete details of this adjustment see Residents and Visitors > BOLPF and BOLROA Documents > Documents 2015 > Spring 2015 Newsletter page 8.


 The recorded dates follow:

  • 2017: APR 15
  • 2016: APR 22
  • 2015: APR 20
  • 2014: MAY 12
  • 2013: MAY 14
  • 2012: MAR 24
  • 2011: MAY 1
  • 2010: APRIL 3
  • 2009: APRIL 30
  • 2008: MAY 4
  • 2007: APRIL 23
  • 2006: APRIL 19
  • 2005: APRIL 19
  • 2004: APRIL 27
  • 2003: APRIL 29
  • 2002: APRIL 25
  • 2001: APRIL 25
  • 2000: APRIL 18
  • 1999: APRIL 16
  • 1998: APRIL 13
  • 1997: MAY 4
  • 1996: MAY 17
  • 1995: APRIL 30
  • 1994: APRIL 24
  • 1993: MAY 6
  • 1992: MAY 1
  • 1991: APRIL 23
  • 1990: APRIL 22
  • 1989: MAY 4
  • 1988: APRIL 19
  • 1987: APRIL 13
  • 1986: APRIL 14
  • 1985: APRIL 23
  • 1984: APRIL 25
  • 1983: MAY 4
  • 1982: MAY 4
  • 1981: APRIL 14
  • 1980: APRIL 27
  • 1979: MAY 9
  • 1978: MAY 3
  • 1977: APRIL 19
  • 1976: APRIL 18
  • 1975: MAY 5
  • 1974: APRIL 29
  • 1973: APRIL 19
  • 1972: MAY 10
  • 1971: APRIL 28
  • 1970: APRIL 28
  • 1969: APRIL 22
  • 1968: APRIL 12
  • 1967: APRIL 20
  • 1966: MAY 5
  • 1965: MAY 3
  • 1964: APRIL 25
  • 1963: APRIL 17
  • 1962: APRIL 29
  • 1961: MAY 5
  • 1960: APRIL 24
  • 1959: APRIL 26
  • 1958: APRIL 23
  • 1957: APRIL 23
  • 1956: MAY 7
  • 1955: APRIL 19
  • 1954: APRIL 27
  • 1953: APRIL 29
  • 1952: APRIL 27
  • 1951: MAY 2
  • 1950: MAY 16
  • 1949: APRIL 23
  • 1948: APRIL 23
  • 1947: MAY 10
  • 1946: APRIL 15
  • 1945: MAR 27
  • 1944: APRIL 30
  • 1943: MAY 4
  • 1942: APRIL 22
  • 1941: APRIL 17
  • 1940: MAY 5
  • 1939: MAY 3
  • 1938: APRIL 15
  • 1937: MAY 4
  • 1936: MAY 7
  • 1935: APRIL 27
  • 1934: MAY 3
  • 1933: APRIL 28
  • 1932: APRIL 24
  • 1931: APRIL 20
  • 1930: APRIL 28
  • 1929: APRIL 28
  • 1928: APRIL 20
  • 1927: APRIL 26
  • 1926: APRIL 29
  • 1925: APRIL 28
  • 1924: APRIL 24
  • 1923: APRIL 29
  • 1922: APRIL 23
  • 1921: APRIL 26
  • 1920: APRIL 30
  • 1919: APRIL 29
  • 1918: MAY 1
  • 1917: APRIL 30
  • 1916: APRIL 27
  • 1915: APRIL 20
  • 1914: APRIL 26
  • 1913: APRIL 29
  • 1912: APRIL 28
  • 1911: APRIL 24
  • 1910: APRIL 1
  • 1909: MAY 10