GEYSERVILLE, Calif. (AP) – The head of California’s state firefighting force says weather conditions have improved and that authorities hope to begin containing a big wildfire in Sonoma County’s wine country by nightfall. California Department of Forestry and Fire Protection Fire Chief Thom Porter told reporters Thursday that the agency has moved this year to preposition trucks when fire conditions are dangerous. He says that allows firefighters to quickly control fires and that only one out of more than 600 in the state over the last two days has become significant. The Kincade Fire broke out late Wednesday and exploded to more than 10,000 acres due to extremely windy and dry weather affecting the state. In Sonoma County, Porter said 100 firetrucks were ready to respond.