Constant pressure charts like the 500 mb chart shown below may seem obvious to interpret. It has many features similar to ...

Low pressure systems can be identified from a synoptic chart due to: Isobars are spread far apart bringing gentle winds. This is caused by a very gradual change in air pressure. Because of the ...

Never miss a good days surf again. Low pressure = wind = waves. Here's a rough guide to understanding low pressure. Isobars make shapes and patterns. When they enclose an area of low pressure they ...