How to read a weather map...
Most of us have seen weather maps at some point in our lives – in geography lessons at school, or in weather forecasts. But what do all the lines, labels and shapes actually mean?
Infographic by James Round
1 Air pressure
Areas of high and low air pressure are labelled on weather maps with the letters H and L. High pressure generally brings calm, dry and settled weather, whereas low pressure typically means unsettled weather, with cloud, wind and rain.