LASSEN COUNTY, Calif. — During California Health and Human Services Secretary Dr. Mark Ghaly's news conference Tuesday, he gave an update on county changes in the state's color-coded, tiered reopening system.

The color-coded system includes: Purple (Widespread), Red (Substantial), Orange (Moderate), and Yellow (Minimal).

Three counties were downgraded from the red tier and into the state's orange tier, meaning the risk of coronavirus is considered "moderate," in those counties, according to the state. Those counties include Lassen, Nevada, and El Dorado.

Under the orange tier, some businesses are allowed to increase activities and have more patrons. A PDF explaining what's allowed in the orange tier is located below.

At a minimum, California counties must remain in a tier for at least three weeks before moving forward. Data is reviewed weekly and tiers are updated every Tuesday, according to Gov. Newsom. In order to move forward, a county must meet the next tier's criteria for two consecutive weeks.

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

View the PDF below for a breakdown of the state's entire color-coded reopening system.