There is no jam in January. The February jam is in the meeting room of the Lake City branch of the Seattle Public Library, 12501 28th Ave NE from 2pm to 4pm on Saturday, February 25th.
To get email notification about upcoming jams or changes in time or venue, sign up for the spam-free announcement list. That's an announcement-only list; if you want to chat about old time music or jam-related stuff, there's a discussion list. (Also spam-free, in that we'll never sell your address to anyone, and won't spam you with ads ourselves.)