tidealmanac
No predictions loaded for 1999. This site serves NOAA predictions from its own store, and this period has not been fetched for Padre Island (south end) 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/tx/padre-island-south-end-8779750/1999

Padre Island (south end), TX tide table 1999 (printable) · Tide Almanac