DIVING GLOSSARY · Planning and conditions
Forecast
A prediction of conditions for a stated area and time.

Explore the idea in context
Definitions are a starting point. These lessons connect the word to examples, illustrations and further reading.
Underwater science
Models, measurements and limits
Distinguish a model from a direct measurement.
Read lesson →Planning your dive
Forecasts and observations
Tell predicted conditions from recorded conditions.
Read lesson →Introductory definition · Instructor review pending.