Barometric Pressure

You see the highs and lows on the weather reports on television. The pressure is measured using a barometer, in units of millibars (mb), hectopascals (hPa), or inches of mercury. On a weather chart, lines joining places with equal sea-level pressures are called isobars. Charts showing isobars are useful because they identify features such as anticyclones (areas of high pressure), depressions (areas of low pressure), troughs and ridges which are associated with particular kinds of weather. Is that barometer on the wall right? Well now is your chance to check it. The weather station is in Haverstoe Park so there will be a small variation depending on the height you are above sea level in relation to Haverstoe but not enough to worry about.