Today, a high pressure system over Western Australia extends a ridge across most of the continent. Well south of Australia, a low pressure system is directing a cold front across the southern states. So, what does this all mean? A weather map, also known as a synoptic chart, is a simple representation of current weather patterns at the Earth’s surface, which show locations and movements of multiple systems 🌏 Isobars, high or low pressure systems, cold or warm fronts, and troughs are all routine