CHICO, Calif. - The Greater Sacramento region will be under the state's regional stay-at-home order, effective 11:59 p.m. Thursday, after the area's available intensive care unit capacity, dropped below 15%, according to the state's ICU bed availability map.

The Greater Sacramento region currently has 14.3% ICU availability.

Counties in the Greater Sacramento region include:

• Butte
• Alpine
• Amador
• Colusa
• El Dorado
• Nevada
• Placer
• Plumas
• Sacramento
• Sierra
• Sutter
• Yolo
• Yuba

When the stay-at-home orders take place, many businesses will be forced to close. According to the state, businesses that will be closed include: Bars, wineries, personal services, hair salons and barbershops.

Retail stores will be limited to 20% capacity and restaurants will only be allowed to offer to-go orders and delivery.

Schools in regions where the stay-at-home order is imposed may be able to stay open based on decisions by local governments.

California's new stay-at-home order, which was announced last week, focuses on five different regions: Northern California, Greater Sacramento, Bay Area, San Joaquin Valley and Southern California. The stay-at-home order is already in effect for the San Joaquin Valley and Southern California regions. Several counties in the Bay Area voluntarily joined the rules.

Northern California region is currently at 27.1% ICU availability.

Once in effect, the stay-at-home order will stay in place for at least three weeks. After that period, the order will be lifted when a region’s projected ICU capacity meets or exceeds 15%, according to the California Department of Public Health.