By Noel Randewich
SONOMA, Calif. (Reuters) – Firefighters began to gain ground on Thursday against wildfires that have killed at least 29 people in Northern California and left hundreds missing in the chaos of mass evacuations in the heart of the state’s wine country.
The latest casualty figures, revised upward by six fatalities on Thursday, marked the greatest loss life from a single California wildfire event in 84 years. With 3,500 homes and businesses incinerated, the so-called North Bay fires also rank among the most destructive in state history.
The fires have scorched more than 190,000 acres (77,000 hectares), an area nearly the size of New York City, reducing whole neighborhoods in the city of Santa Rosa to gray ash and smoldering ruins dotted with charred trees and burned-out cars.
The official cause of the disaster was under investigation, but officials said power lines toppled…