As a general rule, high pressure areas carry mostly fine to mild conditions whilst low pressures carry most of the rain. Both types of systems carry wind of various strengths. The wind is indicated on the map by a short line pointing in the direction of travel. At the end of the line are a number of 'fingers' which indicate wind strength. These fingers have half lengths which help add scale to the indicators.
Rain is shown as shading on the map.
By looking at the systems and regularly using a weather map, an angler can start to relate what is shown on the chart to the weather actually experienced. These days the satellite image of cloud cover over the country is also shown and this can help demonstrate even more clearly, what the systems are doing. A similar system further to the south may mean a similar weather pattern of strong winds and driving rain. Any system with lots of isobars spells trouble for anglers. The fronts shown on the map are where cold air strikes warm air and tend to be areas of intense activity.