https://www.siliconvalley.com/2021/06/08/map-of-california-covid-tiers-june-8/

In the last round of COVID-19 tier assignments before California’s color-coded system is scrapped, six counties improved their status.

Moving from orange (“moderate” risk) to yellow (“minimal”) were Alameda, Napa, San Luis Obispo, Santa Barbara and San Diego counties.