From Seattle Storm PR:
Seattle Storm Championship Parade and Celebration is set for Friday, Sept. 17. The parade, beginning at the base of the Space Needle at 7 p.m. will be followed by a Championship Celebration inside KeyArena at 7:30 p.m. All seating for this free event is general admission. KeyArena doors will open at 7:30 p.m.
Fans are encouraged to begin lining the streets starting at KeyArena and working their ways backwards along 1st. Ave. toward the start of the parade route. The Championship Parade will begin on 4th & Broad St, turn right on Denny and then right on to 1st Ave to KeyArena.
The Championship Celebration will take place inside KeyArena. Fans should enter through the west doors of KeyArena (1st Ave. N/Near Team Shop)