Roger, I realize that there are a few too many variables, But what I am looking for is an EDUCATED WILD ASS GUESS. Some of the other posters have provided that kinda, including that the big quake will be a subduction quake and not a strike slip quake between the pacific plate and the smaller plate between the north amercian plate and the pacific plate. As to where I am located, I live 2 to 3 miles west of the Seatac Airport at an elevation of 400ft above sealevel, sitting on top of 200 to 300 ft of glacial moraine, overlooking Puget Sound about 3/8 mile away from one of the deeper spots on the sound 660ft deep. As too waht I may feel that is why I asked about the magnitued. Roger, I realize that there are a few too many variables, But what I am looking for is an EDUCATED WILD ASS GUESS. Some of the other posters have provided that kinda, including that the big quake will be a subduction quake and not a strike slip quake between the pacific plate and the smaller plate between the north amercian plate and the pacific plate. As to where I am located, I live 2 to 3 miles west of the Seatac Airport at an elevation of 400ft above sealevel, sitting on top of 200 to 300 ft of glacial moraine, overlooking Puget Sound about 3/8 mile away from one of the deeper spots on the sound 660ft deep. As too waht I may feel that is why I asked about the magnitued.