Wine Country Fires: Here's what we know

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Teams with cadaver dogs began a grim search Thursday for more dead in parts of California wine country devastated by wildfires, resorting in some cases to serial numbers stamped on medical implants to identify remains that turned up in the charred ruins.

New deaths confirmed Thursday took the toll to 31, making this the deadliest week of wildfires in California history.

Many of the flames still burned out of control, and the fires grew to more than 300 square miles (777 square kilometers), an area as large as New York City.

As new developments come into the newsroom we updating our fire coverage below:

Napa County

The city of Calistoga in Napa County received a mandatory evacuation order Thursday because of the 22 wildfires raging through Northern California as wineries began to assess their damage and officials tried to get a handle on how many people were displaced from their homes.

Find the latest incident maps from Napa County here.

Learn more about the conditions in Napa County here.

Sonoma County

The latest mandatory evacuation order was issued at 3:20 p.m. Friday. Sonoma County Sheriff's Office is issuing a mandatory evacuation north of Hwy 128 from Geysers Rd to Chalk Hill Rd. If you are in this are you need to evacuate now due to fire.

The Sonoma County Sheriff's Office had issued a mandatory evacuation order for the following area:

North of East Napa St from 4th Street East to end of E. Napa Street.

The area of 7th Street East, Castle Road, and Lovall Valley Road east of Old Winery Road is already in a Mandatory evacuation area. Shortly after noon a mandatory evacuation order had been issued for the area of East of 4th Street East, between Brazil and E. Napa Street and North of E. Napa Street, Between 4th Street East and Old Winery Road.

For more information on the fire, please call the hotline at 707-565-3856.

Sheriff Robert Giordano urged that once people are safe, to please contact their families and let them know where they are. He said he understood how frustrating it was for people who couldn't return to their homes because of the wildfires raging around Northern California and Santa Rosa, but he said it just wasn't safe.

He said 14 people in Sonoma County have died and they are working on identifying the victims, which could be a long process.

View the current evacuation areas here.

View a list of evacuation centers here.

Learn more about the fires in Sonoma County here.

Road Closures

The CHP released a list of road closures for the Solano, Napa and Santa Rosa county areas.

Lake and Mendocino Counties

There are mandatory evacuations in Mendocino County, north of Gibson Lane and east to the county line from Gibson Lane.

The Lake County Sheriff's Office has issued an advisory evacuation notice Wednesday morning for residents in the Middletown area.

According to the Lake County Sheriff's Office, it has become necessary to issue an advisory notice for the area as they monitor fire activity from the Tubbs Fire in Napa County.

Learn more about the conditions in Lake and Mendocino counties here.

Solano County

Areas of Solano County are still under an evacuation order due to the Atlas Fire. On Thursday morning there's word that nearby areas should be ready to go if need be.

Our KTVU crew was at Suisun Valley and Rockville Road which is one of the dividing lines between evacuated areas and areas that are now under a warning to prepare for evacuation.

Learn more about Solano County evacuations here.

By the Numbers

Here's a look at the acres burned.

Theories on What Started the Wildfires

Authorities say just about anything could have started any one of the wildfires now tearing through Northern California. They say anything from a carelessly discarded cigarette, a downed power line, a car's backfire or a chainsaw's pull could all be a possible ignition source.

Dispatch calls link PG&E power lines to North Bay wild fires, cause still under investigation

Read more on what could have caused the fire here.

Victims

We are learning more about the victims of the wine country fires. Find their stories here as their families and communities mourn this tragedy.

Air Quality

The wildfires in the North Bay area are creating what air quality managers are calling the worst air quality ever recorded for smoke. The Bay Area Air Quality Management District issued a smoke and spare the air advisory through Wednesday. Air quality managers recommend using a N95 mask with a filtration.

A pediatrician tells KTVU although going to school shouldn't be a problem, kids and babies should be kept indoors whenever possible in smoky conditions.

Read more about the air quality here.

Bay Area School Closures

View a list of school closures here.

Ways to Help

Find ways to reach out and help those impacted by the wine country fires here.

Hotlines to call:

Kaiser's Family Reunification 855-599-0033

Sutter Santa Rosa Family Reunification 707-543-5411

Missing Persons Sonoma County Hotline 707-565-3856