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

Pressure? Nothing really.

CHANGE IN PRESSURE? now you got something.

It’s going to tell you if a warm or cold front is moving in (which usually brings storms with it) depending on if pressure rises or falls.

So that’s why a lot of analog barometers have a second needle you adjust by hand. You set this to the current pressure and you can easily see if it raises or lowers.

Digital barometers usually have a chart, which can trend pressure change over time