F0183T 570m Seattle fault zone-middle, WA F0185T 570s Seattle fault zone-southern, WA {The northern strand, F0184T 570n Seattle fault zone-northern, WA {is used to represent the total motion, as in Slippery analysis.} F0188T 572n Southern Whidbey Island fault-northern, WA F0189T 572s Southern Whidbey Island fault-southern, WA {The middle strand, F0187T Southern Whidbey Is. f.-mid., WA[sum of 3 strands] {is used to represent the total motion, as in Slippery analysis.}