A Double Rainbow Backed By a Gorgeous Sunset in San Francisco

Eastern Arches

photo by Matthieu Dupont

Many San Francisco citizens witnessed a fantastic double rainbow backed by a sunset last night. SFGate posted some great images of this beautiful natural event and we found a few more on Flickr. Double rainbow, what does it mean?

Sandoval's Rainbow

photo by David Gallagher

Dirty Bliss

photo by Joe Azure

Double Rainbow

photo by Scott Schiller

Double Rainbow in San Francisco

photo by Albert Law

P9050002 - 2012-09-05 at 19-32-48

photo by kelp