No predictions loaded for 2090. This site serves NOAA predictions from its own store, and this period has not been fetched for Rootok Island yet. Nothing is estimated or interpolated in its place. NOAA's own page for the station has the official table: tidesandcurrents.noaa.gov.
tidealmanac.site/us/ak/rootok-island-9462723/2090
Rootok Island, AK tide table 2090 (printable) · Tide Almanac