Wildfires in Northern California have caused massive devastation, killing at least 26 and destroying people’s homes and businesses.

There were still 22 wildfires fires blazing Thursday morning. The fires have burned over 190,000 acres of land and 3,500 structures. Almost 20,000 residents had to evacuate, according to the California Department of Forestry and Fire Protection. Most of the fires began Sunday, officials are unsure of the cause.

Gov. Jerry Brown declared emergencies for Napa, Sonoma and Yuba counties. The region known for its wineries, is now barren and charred in some areas.

There are at least 8,000 firefighters and back up personnel fighting the wildfires. At one point around 900 people were reported missing due to the fires, but about half of them have been found. Over 150 people have been injured due to the fires.

Sonoma County Sheriff Robert Giordano called the fires “one of the worst natural disasters in California history,” in a press conference Tuesday.

The blazes have knocked out cell phone towers and there are 49,000 customers without power. Fire trucks and personnel have been sent from 1,000 fire departments from as far south as San Diego and as far north as Oregon, according to ABC News.

Winds haven’t picked up as much as previously forecasted on Wednesday and Thursday, allowing firefighters begin to get a handle on the situation.

“[The lack of wind] is starting to give us the upper hand, allowing us to actually … [get] some containment started in certain areas,” said Napa County Fire Chief Barry Biermann to CNN Thursday.

At least 121 flights have been canceled that fly over the area due to limited visibility.