When checking the weather what does the pressure tell you?

Question

When checking the weather what does the pressure tell you?

In: 503

Answer 1

The exact number for the air pressure doesn’t mean much, but relative pressure (i.e., high pressure and low pressure systems) tells us a lot.

Low pressure systems tend to be warmer and moisture air, so storms tend to form. High pressure systems tend to be cool and dry, so they push storms away.

A drop in pressure means rain is on the way, and a rise in pressure means that nice weather is on the way.

There’s a lot more going on here, but that’s the basics.