![]() ![]() ![]() This is shown on a synoptic chart with isobars that are very close together and we feel strong winds as a result. If the difference between areas of high and low pressure is greater then we have a large gradient and the air will move faster to try and balance out this difference. It also shows areas of high and low pressure.Īir moves from high to low pressure along a gradient (similar to squash that is left in a glass of water becoming evenly distributed as it becomes less concentrated). The pressure pattern is important because we can use it to tell us where the wind is coming from and how strong it is. The circular lines you see on the chart are isobars, which join areas of the same barometric pressure. This is why the UK sees such changeable weather. Temperature, pressure and winds are all in balance and the atmosphere is constantly changing to preserve this balance. In weather terms, this means the pressure pattern, fronts, wind direction and speed and how they will change and evolve over the coming few days. The word 'synoptic' simply means a summary of the current situation. ![]()
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