Days after an atmospheric river brought record-setting rainfall to California, the state is in the crosshairs of another rainy storm system.

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Zhe Li, University Corporation for Atmospheric Research (THE CONVERSATION ...

High pressure often represents stable air, while low pressure can signify instability. On a cold, sunny day there will be a significantly higher atmospheric pressure than when a big storm is ...