A system in the Gulf now has a 70% chance for development. While it is expected to go into Mexico, it should sling rain up ...

The National Hurricane Center is watching an area of disturbed weather in the northwestern Caribbean Sea that has a low ...

While models have the system heading west into Mexico, we do think it’ll sling moisture up along the Texas coast, increasing ...

This is called a pressure gradient, and you can identify the strength of these gradients by looking at isobars on a map. Isobars are lines of equal pressure that surround a low-pressure system ...

However, those H’s and L’s are not marking the position of high and low pressure centers, and the lines are not lines of constant pressure or isobars.

Isobars make shapes and patterns. When they enclose an area of low pressure they are called a 'low' or 'depression'. It's centre is labelled on a weather map with an 'L' and often has a number ...

A map illustrates lines of surface pressure, called isobars, with areas of high and low pressure marked for March 14, 2025. Winds are strongest when isobars are packed closely together.

Isobars make shapes and patterns. When they enclose an area of low pressure they are called a 'low' or 'depression'. It's centre is labelled on a weather map with an 'L' and often has a number ...