Unsurprisingly, all these clouds bring rain which is why lows are usually ... On a weather map (synoptic chart), a low is denoted by an ‘L’ with the central pressure underneath.

The wettest week of 2025 to date is coming for Perth and southwest Western Australia, after good falls on Thursday night and ...

A synoptic chart is a more detailed weather map which shows what type of weather system is moving over Britain. Isobar lines which join up areas of equal air pressure are drawn on these maps.

Mr King said: “Something you don't often see on a synoptic chart... a convergence line ... BBC meteorologist Tomasz Schafernaker warned that “rain is on the way”. He said: “It ...