Wasn't at Tahoe but I had something similar over Durham last Wednesday - three lights in a loose triangle formation, moving way too slowly for a plane then just stopped. Completely static for maybe two minutes then gone.
What's frustrating me is I can never tell if these things are connected geographically or if its just coincidence that similar reports cluster around the same timeframe. Is there a ley line running anywhere near Tahoe? Genuinely asking because I've been mapping some of the UK lines and wondering if the same kind of energy corridors exist over there.
Did the lights make any sound? That's always the first thing I want to know and nobody ever mentions it.