Coronavirus map: Here’s what tier each California county is on as of Nov. 10

Ten of California’s 58 counties changed tiers on Tuesday, Nov. 10, according to the weekly update to the state’s four-tier coronavirus tracking system.

There are now six counties categorized in the least restrictive yellow tier. That is down from nine that were  listed as yellow last week.

Three counties –San Diego, Sacramento and Shasta – regressed from red to the most restrictive purple tier. The state has 12 counties now in the the purple tier.

Counties are assigned to a tier based on metrics showing the speed and the spread of the virus in their borders, and each week – typically on Tuesdays –the state updates their status.

At a minimum, counties have to remain in a tier for three weeks before they can progress on, and they have to meet the next tier’s criteria for at least two consecutive weeks before making a move.

They can also backtrack if their performance on the metrics reverses course.

A list of what businesses are impacted by each tier is included below.

Note: The state recently added a new metric called health equity. For a county with a population of greater than 106,000, the county must: Ensure that the test positivity rates in its most disadvantaged neighborhoods – the Healthy Places Index census tracts are used for that – do not significantly lag behind its overall county test positivity rate. There are additional conditions listed on the state’s site.

Here is the current metrics for each county, where they are now and where they were last week.

State metrics:

How different are the tiers?

Purple is the most restrictive, especially for education. Schools in the Widespread (purple) tier aren’t permitted to reopen for in-person instruction unless they receive a waiver from local health departments for TK-6 grades. Schools can reopen for in-person instruction once their county has been in the red tier for at least two weeks. If a county regresses back to the purple tier, schools won’t be forced to close again, but any that hadn’t open would be prevented from opening until the county clocks at least two weeks in the red tier.

Source: California Department of Finance