Don't worry about Legacy in the bay area, though these all look like they might be a drive for you.
Mondays at 7pm at Eudemonia in Berkeley (4 rounds)
Tuesdays at 7pm at Versus Games in the city (3 rounds)
Somewhere else does Wednesdays...
Thursdays at 7pm at Endgame in Oakland (3 rounds)
Somewhere else does Fridays or Saturdays, as well, I believe
Sundays at 1pm at Anime Imports in Pacifica (3-4 rounds)
CFB and Eudo do big events ~monthly or quarterly
As for Vintage, Eudemonia ~4-5 times per year and a few times at Forgotten Path in Vacaville.
Join the Bay Area Eternal (BAE) Facebook group for better, up-to-date info.