Progress made against California wildfire as thunderstorms forecast

The Stone Canyon fire in Lyons, Colorado, left a path of destruction in its wake (Zachary Spindler-Krage/The Denver Post/AP)

Firefighters have reported progress against California’s largest wildfire of the year ahead of expected thunderstorms that could unleash fire-starting lightning and erratic winds and erode work over the past week to contain the blaze.

Containment of the Park Fire, now California’s fourth-largest wildfire on record, was at 27% as of Saturday afternoon, after relatively milder weather the last few days allowed firefighters to build containment lines.