No predictions loaded for 2041. This site serves NOAA predictions from its own store, and this period has not been fetched for Charleston 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/or/charleston-9432780/2041
Charleston, OR tide table 2041 (printable) · Tide Almanac