Surface charts 1

Surface charts provide mariners with the principal tool for a basic understanding of the present and upcoming weather.
Let’s have a closer look at surface charts, differentiating between the surface weather analysis and the surface weather prognosis.
The surface weather analysis shows weather patterns based on synoptic surface observations.
These are usually made a few hours before broadcast time.
The surface weather prognosis shows future weather patterns on a 12, 24, 36 and sometimes even a 72 hour forecast basis.