The pattern of shaking intensity was somewhat variable , with a large region with an intensity of VII ( '' Very strong '' ) containing localized areas of intensity VIII ( '' Severe '' ) . These variations generally relate closely to the underlying geology , with higher intensities recorded where there was either artificial fill or alluvium , although there were some exceptions . The observed pattern of intensities was very similar to those from the 1949 Olympia and 2001 Nisqually earthquakes
1949 Olympia
1949 Olympia earthquake
1965 Puget Sound earthquake