Here’s what else to know:

Did anyone say when the sheltering orders will end?

No, and officials repeated that the only reason they can even talk about what life might be like after the outbreak is because Californians followed early, urgent directives to stay home and stay away from one another.

“There’s no light switch here,” Mr. Newsom said. “It’s more like a dimmer.”

That said, officials will be watching closely for the next two weeks, to see whether Covid-19 hospitalizations decline and whether efforts to build a robust enough testing and public health work force have borne fruit to evaluate when it might be OK to dial back some restrictions.

However, Mr. Newsom has said the state is working closely with local officials, so depending on where you live, restrictions could extend beyond state orders.

Officials laid out six things that Mr. Newsom and other public health officials will be watching to help decide when to ease restrictions:

• Whether there is sufficient and fast enough testing to monitor any outbreaks, including by tracing, testing and isolating people who have been exposed to the virus.

• Whether officials can prevent infections in vulnerable communities, like among older Californians, and those experiencing homelessness.

• Whether hospitals are equipped to handle surges of patients, with enough beds, ventilators and protective equipment for workers.

• Whether there’s progress on developing therapies that could help patients recover more quickly. Mr. Newsom said he was optimistic as the state’s research institutions and biotech companies focus their efforts.

• Whether physical environments have been adapted to the new reality, with plenty of space for people to keep their distance. This will be especially critical for schools and restaurants.

• And whether state and county officials can quickly reinstate stay-at-home orders or other measures if necessary.

Didn’t the governor announce a partnership with other states?

Yes. On Monday, Mr. Newsom announced a joint effort to figure out a framework for reopening Western states, including California, Oregon and Washington. He said on Tuesday that conversations were ongoing and that other states were expected to join.

[Read more about how governors have been handling the coronavirus crisis.]

Can they be overruled by the president?

In short, no, not according to the Constitution or federal law, experts across the ideological spectrum said.

The governor mentioned herd immunity as a kind of goal, along with a vaccine. What is herd immunity?

Herd immunity is when a high percentage of people in a given community are immune to a disease because they’ve either been vaccinated or they’ve already had it.

But as the infectious disease specialist Marc Lipsitch wrote in an Opinion piece, it’s too early to know who will be immune to the coronavirus and why.

An update from the U.S.N.S. Mercy

Today, we have another dispatch from the Navy hospital ship Mercy, which is moored in the Port of Los Angeles. It was written by my colleague John Ismay:

In our last update from the ship, we reported that the team of nearly 900 Navy doctors, nurses and other health care providers had just found their first case of Covid-19 among the uniformed crew. In an interview, Lt. Andrew Bertucci, a Navy spokesman on the ship, said that the number of crew members aboard who have tested positive for Covid-19 is now seven.

Those seven have moved ashore and receive regular medical checkups from their shipmates while in isolation. According to the Navy, more than 100 crew members who worked with them have tested negative for the coronavirus, but as a precaution they have been moved from the ship to rooms back on land for a 14-day quarantine. People in this group will be tested again if they begin to show symptoms of the disease.

The absence of just over 10 percent of the crew has evidently not caused too much of a disruption for those still on the ship.

“This has not changed our ability to perform our mission or to help the people of Los Angeles,” Lieutenant Bertucci said. “We are still able to serve as the relief valve for state and local health care providers.”

Thus far, the Mercy has taken a number of patients from civilian hospitals to treat on the ship, free of charge, in order to establish procedures that will be relied upon should the Los Angeles area experience a jump in Covid-19 cases.

As of noon Tuesday, the ship has admitted 48 patients, discharged 30 of them back into the community, and performed a dozen surgeries.

Traffic was light on California State Route 2 near Glendale last week.Credit...Kendrick Brinson for The New York Times

• How has California been able to keep infections, deaths and hospitalizations relatively low? Here’s a look from the beginning. [The New York Times]

• Why should you keep at least six feet away from others? And why does a mask help? This three-dimensional interactive shows how one cough can spread droplets through a room. [The New York Times]

• A hunger strike over the lack of protections against the coronavirus at an immigrant detention center came to a partial halt as detainees waited for officials to fulfill some of the demands, including for soap and paper towels. [The Bakersfield Californian]

• The U.S. census is delaying its 2020 count amid coronavirus-related challenges. [The New York Times]

Read more about how the coronavirus is making critical hard-to-count communities even more difficult to reach. [The New York Times]

• Wildlife are taking over what were heavily populated areas of Yosemite National Park. [The Los Angeles Times]

• A silver lining? The fact that there was no Super Bowl parade in the Bay Area may have saved lives. [The Wall Street Journal]