California Gov. Gavin Newsom on Thursday announced that the majority of the state will be under a limited stay-at-home under as of Saturday due to rising coronavirus cases nationwide.

The big picture: The order will impose a monthlong curfew between 10 p.m. and 5 a.m. for residents in 41 counties, covering roughly 94% of the state population. Newsom said earlier this week he was pulling an "emergency brake," halting further reopening plans, tightening restrictions on indoor businesses and strengthening mask mandates.

• California recently moved more than 20 counties into its purple tier, meaning more than seven new cases each day per 100,000 residents, or a positivity rate higher than 8%.
• COVID-19 cases in the state have steadily increased over the last few weeks. Many other states have taken more rigorous action to restrict the spread of the virus.
• Newsom caught flack last week for holding a private dinner that did not adhere to state guidelines.

What they're saying: "Non-essential work and gatherings must stop from 10pm-5am in counties in the purple tier," Newsom tweeted Thursday afternoon. "This will take effect at 10pm on Saturday and remain for 1 month. Together--we can flatten the curve again.

• “These immediate actions will help reduce community spread, protect individuals at higher risk of severe illness or death from COVID-19, and prevent the state’s health care delivery system from becoming overwhelmed,” Erica Pan, California's acting public health officer, said in a statement.

Zoom out: Chicago Mayor Lori Lightfoot on Nov. 12 announced a stay-at-home advisory and a 10-person cap on social gatherings to combat a surge in new COVID-19 infections.