The Bay Area’s rain is expected to arrive in two waves this weekend: the first on Saturday morning, the second Saturday evening to Sunday morning.

The updating radar map above shows areas of precipitation in green, with greater intensities indicated by yellow and orange.

The National Weather Service is advising against travel in the Sierra Nevada, particularly from Saturday afternoon until noon Sunday. For updates on chain controls and road closures, see the Caltrans website or mobile app or call (800) 427-7623.

Source: www.mercurynews.com