Finally, some rain! It's been a very dry winter so far (I read in the S.F. Chronicle that December 2011 was the driest December of the past 22 years), but today brought the beginning of a storm.
I didn't take any photos today, but here are a few from 2010. Two of these are from a similar time period — 20 and 22 January. The third image is from 30 March. I've always loved the intensity of storm clouds, and ominous sheets of rain on the horizon.