TEHAMA COUNTY, Calif. — Tehama County has moved out of the state's most restricting COVID-19 tier and is now in the red or "substantial" category, according to the state's website.

In the red category, several types of businesses will be able to operate indoors with modifications from the state. Places like retail, shopping centers, personal care services, museums, zoos, places of worship, movie theaters, fitness centers, and more will be allowed to reopen with different levels of capacity. To view activities allowed in the red tier, click here.

Tehama County Health Services Agency said the change to the red tier is effective immediately.

Currently, 30 counties are in the purple tier, 17 are now in the red tier, nine are in orange, and two counties are in the yellow tier.

California's new reopening color-coded system uses coronavirus case rates and the percentage of positive tests to determine a county's tier.

Under the new guidelines, counties must remain in a tier for at least three weeks. Counties then have to meet the next tier's requirements for two consecutive weeks before they can move into the next tier.

If, however, a county's data worsens for two weeks, that county will be moved into a more restrictive tier, according to the California Department of Public Health.

For details explaining the state's new blueprint, click here.