A synoptic chart is a more detailed weather map which shows what type of weather system is moving over Britain. Isobar lines which join up areas of equal air pressure are drawn on these maps.

Here’s how to make sense of the weather. And while the weather presenter pointing at all the bright lines and markers on the synoptic chart certainly know what they’re talking about ...

Depressions often feature fronts where different air masses meet. Low pressure systems can be identified from a synoptic chart due to: Isobars are spread far apart bringing gentle winds.