Satellites watch 'atmospheric river' bring extreme rain to California (photos)
Satellites are watching as a so-called atmospheric river brings huge amounts of tropical moisture to California, prompting weather forecasters to issue flood-risk alerts.
![Satellites watch 'atmospheric river' bring extreme rain to California (photos)](http://cdn.mos.cms.futurecdn.net/Nq9YGH8phSkwtJwYuUrGLQ.gif?#)