Greater Sacramento has become the third region in California to see ICU capacity drop below 15%, triggering the state's regional stay-at-home order.
State officials said as of Wednesday, the region's ICU capacity had fallen to 14.3%.
The region includes Alpine, Amador, Butte, Colusa, El Dorado, Nevada, Placer, Plumas, Sacramento, Sierra, Sutter, Yolo and Yuba counties. It joins the San Joaquin Valley and Southern California regions under stricter orders.
Other ICU capacity figures for California's regions released Wednesday show the Bay Area at 20.9%, Northern California at 27.1%, San Joaquin Valley at 4.2% and Southern California at 9.0%.
Under the guidelines, which will take effect Thursday at 11:59 p.m., essential businesses remain open. Tourist-heavy areas like Truckee and Lake Tahoe are included in the Greater Sacramento region, however, the Nevada side of Lake Tahoe will remain open.
Visitors have flocked to the Tahoe area during the pandemic.
Restaurants will be limited to take-out and delivery. Bars, wineries, personal services, hair salons and barbershops will close. Gyms and places of worship can continue to operate outdoors. While retail is allowed to remain open at 20% capacity, schools and critical infrastructure are allowed to stay open without capacity restrictions.
Because of a change issued by the state Wednesday morning, playgrounds can remain open.
The order also asks all residents to stay at home as much as possible and bars them from socializing with anyone outside of their household, even outdoors.
The Bay Area and Northern California regions are now the only two that do not fall under the order, although several Bay Area counties and the city of Berkeley have voluntarily adopted the restrictions in the hopes of staying ahead of the surge.