FROST Station : PORT ALEXANDER, AK7557 Start yr. - 1961 End yr. - 1990 Requested years of data: 30 Available years of data: 15 Spring: Years of missing data 24 deg = 16, 28 deg = 16, 32 deg = 16 Years with no occurrence 24 deg = 4, 28 deg = 0, 32 deg = 0 Data years used 24 deg = 14, 28 deg = 14, 32 deg = 14 Fall: Years of missing data 24 deg = 20, 28 deg = 20, 32 deg = 20 Years with no occurrence 24 deg = 1, 28 deg = 0, 32 deg = 0 Data years used 24 deg = 10, 28 deg = 10, 32 deg = 10 ------------------------------------------------------------------------ | Temperature ---------------------------|-------------------------------------------- Probability | 24F or lower | 28F or lower | 32F or lower | ---------------------------|--------------|--------------|-------------- | | | Last freezing temperature | | | in spring: | | | | | | 1 year in 10 later than-- | March 10 | April 12 | May 8 | | | 2 year in 10 later than-- | March 2 | April 1 | May 2 | | | 5 year in 10 later than-- | February 12 | March 11 | April 19 | | | First freezing temperature | | | in fall: | | | | | | 1 yr in 10 earlier than-- | November 12 | November 4 |September 29 | | | 2 yr in 10 earlier than-- | November 24 | November 10 | October 8 | | | 5 yr in 10 earlier than-- | December 24 | November 21 | October 26 | | | ------------------------------------------------------------------------ FROST Station : WRANGELL AIRPORT, AK9919 Start yr. - 1961 End yr. - 1990 Requested years of data: 30 Available years of data: 30 Spring: Years of missing data 24 deg = 5, 28 deg = 5, 32 deg = 5 Years with no occurrence 24 deg = 0, 28 deg = 0, 32 deg = 0 Data years used 24 deg = 25, 28 deg = 25, 32 deg = 25 Fall: Years of missing data 24 deg = 2, 28 deg = 2, 32 deg = 2 Years with no occurrence 24 deg = 0, 28 deg = 0, 32 deg = 0 Data years used 24 deg = 28, 28 deg = 28, 32 deg = 28 ------------------------------------------------------------------------ | Temperature ---------------------------|-------------------------------------------- Probability | 24F or lower | 28F or lower | 32F or lower | ---------------------------|--------------|--------------|-------------- | | | Last freezing temperature | | | in spring: | | | | | | 1 year in 10 later than-- | May 4 | May 22 | June 10 | | | 2 year in 10 later than-- | April 19 | May 8 | May 28 | | | 5 year in 10 later than-- | March 23 | April 11 | May 5 | | | First freezing temperature | | | in fall: | | | | | | 1 yr in 10 earlier than-- | October 10 | October 7 |September 24 | | | 2 yr in 10 earlier than-- | October 21 | October 16 | October 2 | | | 5 yr in 10 earlier than-- | November 11 | November 3 | October 19 | | | ------------------------------------------------------------------------