The tide prediction curve above shows how fast the tide is rising or falling; you can see how long a height is sustained or see the heights at other times.
WARNING: A tide prediction is NOT the same as the actual tide that occurs. The predicted tidal heights should be considered those expected under average weather conditions. When weather conditions differ from what is considered average, corresponding differences between predicted levels & those actually observed will be noted. Generally, prolonged onshore winds or a low barometric pressure can produce higher levels than predicted, while the opposite can result in lower levels than predicted. During times of storm surges or when extreme weather conditions are imminent, it would be prudent to keep closely advised by local weather forecasts as they relate to the effects upon the tide levels.
© Peter Brueggeman. All rights reserved. First version published and
available on the World Wide Web on 1 March 1995; it ran on a Mac in Scripps Institution of
Oceanography Library, was scripted by Preston Holmes, and
was the first form-based tide predictor on the Web.