LATEST: Oct. 29, 6:30 a.m.: PG&E starts cutting power in third shutoff in a week

PG&E is watching the forecast a widespread dry, offshore wind event beginning Tuesday through midday Wednesday, and will begin shutting off power to approximately 596,000 customers to mitigate wildfire risk in for Northern and Southern Sierra, North Bay, Bay Area, Santa Cruz mountains, North Coast and Kern County.

"Given fluctuations in the forecasts, PG&E continues to analyze whether this wind event will prompt more safety shutoffs, and the extent of those shutoffs," PG&E said in a statement.

Here's the timeline for shutoffs. The times are estimates and may change (earlier or later) dependent on weather:

5 A.M. Tuesday, Oct 29

Butte, Plumas, Tehama, Trinity, and Shasta

9 A.M. Tuesday, Oct 29

El Dorado, Nevada, Placer, Sierra, and Yuba

4 P.M. Tuesday, Oct 29

Alpine, Amador, Calaveras, and Tuolumne

7 A.M. Tuesday, Oct 29

Humboldt (Southern), Mendocino, and Sonoma



7 A.M. Tuesday, Oct 29

Lake, Napa, Solano and Yolo

9 P.M. Tuesday, Oct 29

Humboldt (Northern) and Siskiyou

11 P.M. Tuesday, Oct 29

Marin, Santa Clara, Santa Cruz, and San Mateo

11 P.M. Tuesday, Oct 29

Alameda, Contra Costa

9 P.M. Tuesday, Oct 29

Kern

Pacific Gas and Electric Company said Monday evening that it had restored approximately 57% of the 970,000 customers who lost power in a shutoff that began October 26. As of 10 p.m. today, about 556,400 customers had been restored in portions of the following counties

UPDATE: Oct. 28, 5:50 p.m.: PG&E contractor died in Humboldt

The utility company also gave updates on another potential round of power cuts in a news conference Monday night. While more than 375,000 customers have seen power restored from this weekend's events, up to 600,000 may lose power starting Wednesday, according to PG&E's Mark Quinlan.

That number will likely include customers who will not have had their power restored prior to the start of the next round of shut-offs. Those customers have not had power since Saturday.

PG&E said a total of 970,000 customers have lost power since the weekend. 6,000 PG&E workers or contractors are working to inspect lines and equipment before restoring power to the nearly 600,000 customers who are still without power. The company said they have found 50 cases in which there has been damage to equipment so far.

During the news conference, power company officials said a contractor working in Humboldt County during the public safety power shutoff Friday has died, according to Keith Stephens, a PG&E spokesperson. The company gave few details.

According to the Times-Standard of Eureka, the contractor, from Mississippi, was driving a Freightliner truck that veered off the road on Friday, prior to Saturday's public safety power shut-off. The man was ejected from the truck after it overturned.

Watch the full news conference here:

UPDATE: Oct. 28, 5 p.m.: Next round of shut-offs to affect 605,000 customers

PG&E announced its next round of proactive power shut-offs would affect about 605,000 customers, or about 1.8 million people when you consider each customer represents three people on average.

The shut-offs, the third such event in less than a month, are set to start rolling out Tuesday morning amid yet another Red Flag Warning. PG&E hopes that by shutting off power during windy weather, it can prevent sparking more wildfires.

Customers in the following counties will be affected, according to PG&E: Alameda, Alpine, Amador, Butte, Calaveras, Contra Costa, El Dorado, Humboldt, Kern, Lake, Marin, Mendocino, Napa, Nevada, Placer, Plumas, San Mateo, Santa Clara, Santa Cruz, Shasta, Sierra, Siskiyou, Solano, Sonoma, Tehama, Trinity, Tuolumne, Yolo and Yuba. Check if your address will be affected on PG&E's website.

The first customers to lose power Tuesday morning will be in the North Valley, North Bay and Sierra Foothills, followed by those in the southern Sierra foothills Tuesday afternoon, Kern County Tuesday evening, and the greater Bay Area early Wednesday morning.

The high winds are expected to pass by mid-day Wednesday.

The PSPS (Public Safety Power Shut-off) is set to be smaller than the weekend's, which affected 940,000 customers. An additional 100,000 customers lost power due to unanticipated damage to PG&E power lines and infrastructure.

As of 4:30 p.m. Monday, PG&E said 325,000 of those customers have had power restored.

LATEST: Oct. 28, 3 p.m.: Power begins to return to the Bay Area

Power is slowly being restored to Bay Area residences by mid-afternoon Monday. Homes in Oakland and Moraga were some of the first to see power restored as PG&E completes line inspections for damage. Once the lines are inspected and found safe, power can be switched back on.

Large swaths of the Bay Area are expected to see power restored by 6 p.m., according to PG&E's outage map. You can check your address here.

UPDATE: Oct. 28, 12:50 p.m.: PG&E failed to inform 23,000 of prior outages

Pacific Gas & Electric said it did not notify 23,000 customers they were losing power during massive power shut-offs on Oct. 9-12.

A report filed by PG&E with state regulators Monday indicates 23,000 customers, including 500 with medical conditions, were not told their power was going to be turned off in anticipation of dangerous fire conditions. According to the report, PG&E either didn't have contact information on file or erroneously believed the homes still had the power turned on.

The report doesn't specify where the customers were located. The early October outages affected some 636,000 homes and 81,000 businesses.

UPDATE: Oct. 28, 11:30 a.m.: PG&E equipment may have sparked multiple weekend fires

Reports issued by PG&E indicate their equipment may have been responsible for two fires that burned over the weekend.

The electrical incident reports, released by the California Public Utilities Commission on Monday, indicate two fires in Lafayette started at about the same time as a PG&E transformer malfunctioned and a power pole fell over. A worker cited in PG&E's report said they were told by firefighters that contact between a power line and a communication line may have sparked a fire.

A Contra Costa Fire Protection District spokesman said calls came in 3 p.m. for a fire near Highway 24 at Pleasant Hill Road and a fire on the north side of Highway 24 at Camino Diablo. The Lafayette Tennis Club building was destroyed in one blaze. A home's roof was damaged and one outbuilding also suffered fire damage.

Power was not shut off in the area at the time of the fires, The Chronicle reports.

UPDATE: Oct. 28, 11 a.m.: PG&E issues all-clear for all shut-off areas

PG&E has issued an "all clear" for the following counties: Alpine, Amador, Butte, Calaveras, Colusa, El Dorado, Fresno, Glenn, Humboldt, Kern, Lake, Madera, Marin, Mariposa, Mendocino, Napa, Nevada, Placer, Plumas, San Joaquin, Shasta, Sierra, Solano, Sonoma, Tehama, Trinity, Tuolumne, Yolo and Yuba.

The "all clear" means PG&E crews will begin inspecting lines for damage. Damaged places will need to be repaired before power is turned back on. PG&E says it hopes to restore power within 48 hours, but if significant damage was caused by high winds, it may take longer.

In addition, some customers may not get their power turned back on before another wind event blows into Northern California on Tuesday. Residents in most of PG&E's Northern California service areas are currently under a "public safety power shutoff" watch for Tuesday and Wednesday.

PG&E has not announced how many customers would be impacted by another shut-off, but they said 500,000 residents have already been given a 48-hour notice that another (or a continuing) shut-off would occur.

UPDATE: Oct. 28, 5:30 a.m.: PG&E begins restoration process in Sierra Foothills and North Coast

Pacific Gas and Electric Company said in a news release Monday that the utility company has begun the restoration process after a historic deliberate power outage, but some customers who are currently without power may not have it restored before the next wave of shut-offs begins Tuesday. This means some customers may be in the dark for five to seven days.

As winds have subsided in the Sierra Foothills and on the North Coast, PG&E has begun safety patrols and inspections in the “all clear” areas in Humboldt, Siskiyou, Trinity, Northern Mendocino and portions of Lake County. The utility expected to have 30,000 customers restored by 10 p.m.

"PG&E will strive to inspect and restore power within 48 hours but given the significance of this high-wind event with gusts as high as 102 mph, the damage may be significant, requiring additional time and resources," the utility said in the statement.

The company is preparing for a third widespread power shut-off in less than a month starting on Tuesday morning. PG&E may not have time to make all the repairs needed before high winds blow into the region again this week.

It is not yet clear exactly how many customers will be affected by the coming shut-off, though PG&E says it has already given 500,000 customers a 48-hour notice they will lose power. A spokesperson in a press conference Sunday night emphasized that number will change over the next two days.

As it pertains to the Bay Area, the scope of North Bay outages is expected to be "similar" to the current PSPS. The impact to East Bay and South Bay customers is supposed to be somewhat smaller.

More than 1 million customers lost power in deliberate blackouts aimed at mitigating the risk of wind-damaged equipment sparking wildfires. It has been called the largest intentional power shutoff in PG&E's history.

Here's the number of estimated customers still without power in Bay Area counties as of Monday morning:

Alameda: 57,002

Sonoma: 98,647

Napa: 17,878

Marin County: 119,000

Solano: 25,524

Contra Costa: 48,058

San Mateo: 57,218

Santa Clara: 27,094

Customers can also visit the PG&E website for updates.

Full PG&E shutoff coverage:

- Here's when PG&E plans to restore power, based on location

- Tuesday wind event will trigger another round of power shut-offs

- Stuck in the dark? Here’s where to find power in the Bay Area during the PG&E outage

- How do I know when PG&E is shutting off my power?

- Here’s why PG&E doesn’t put more power lines underground

Amy Graff is a digital editor with SFGATE. Email her at agraff@sfgate.com.