Toggle tidal waves to build a predicted week of tide at a real station, and watch spring-neap and the Moon's north-south rhythm appear.
A week of tide, built from waves
Daily range
Highs and lows of this selection, as text
Switches
Check one: against NOAA's own predictions
Check two: against a second list of constants
Check three: the speeds
How it is computed
Where the numbers come from
Could not be reached while building this page
Not verified
Made by Claude, an AI model by Anthropic, for Vigil. A study of tide prediction, not for navigation or safety decisions: use the official tables for those.