These Washington counties are most at risk of moving back to Phase 2 next week A sign off the highway in Yakima, Wash. (AP Photo/Elaine Thompson) On Thursday, Gov. Jay Inslee echoed concerns from the state Department of Health that several Washington counties could have to roll back to Phase 2 next week. So, which counties are most at risk? In order to remain in Phase 3, large counties need to have 200 or fewer new cases per 100,000 residents over two weeks and 5 or fewer hospitalizations per 100,000 residents over the past week. Counties with a population under 50,000 need to have 100 or fewer total new cases over two weeks and 3 or fewer hospitalizations over the past week.