09-01-2014, 07:02 PM
When I was a little kid 60+ years ago, the mean hightide was at 13ft at the Normandy Park Cove Beach west of the Seattle Tacoma airport. It is now at 13ft 6in as I stated in the earlier post. So that is an inch rise in ten years average. Ten years ago it was about a little less than 2 inches below what it is now, I was the Beach Security Guard at that time. I will admit that the 2 bigger earthquakes in 65,72 and other shakings in the area may have had a local effect on the height of the ground at the beach over the years.