Hi @Kevin Mayhew ! Welcome to BP! You can find upcoming real estate events and meetups here: https://www.biggerpockets.com/forums/521-events-and-happenings
Also check out Washington Landlords Association they are a great resource.
Go to meetup.com and search for "Real Estate" in the Seattle area. There's an average of 3 meetups a night. Search for the ones that have a decent amount of people going and then attend those for networking. Most of them are speaker presentations, some are pure networking, some are sales. Some bigger groups/associations, like REAPS and REIA, don't have most of their memberships and attendees on meetup; they have their own website where members register (and they have 1500+ members combined).
I also host meetups every month as well, but it's more of a lunch & networking meetup (since I don't find value in doing another evening meetup). You can also find it on Meetup called "Real Estate At Work".