The aurora was visible yesterday from Lake Sonoma from 9 pm
until 11:30 pm. It was mostly a faint greenish glow with
sometimes a few rays extending to 30 deg. and some shimmering
red patches. Nothing like the day before.
By the way, fat chance if you try to view the aurora from
anywhere in the Bay area: there is simply too much light
pollution. You have to do the drive to a very dark sky
location. I'm heading back tonight to LS to take more shots
if weather allows.
Pierre