Weather Maps are also referred to as synoptic charts. It is a record of the weather conditions being experience at a particular point in time. It provides information about air pressure, wind speed and direction, and the distribution (location) of rainfall.
Synoptic charts enable geographers and meteorologists (a person who studies weather) to view current weather conditions and predict weather into the future. Being able to read weather maps is an important geography skill.
One of the most important features of the atmosphere is air pressure (or the weight of the air).
Atmospheric air pressure measurements are given in hectopascals (hPa).
The main lines that we see on weather maps are called isobars. Isobars are lines joining places of equal pressure
Isobars across a map of Australia