Those orange tree patches pictured aren’t harbingers of winter. They are dying or dead trees in California, most likely the result of pine beetle forest damage.

It’s hot now in much of the golden state, and as temperatures continue to rise, something else is happening: Trees are dying in unprecedented numbers. A recent U.S. Forest Service aerial detection survey revealed a record 66 million dead trees in southern Sierra Nevada. What we’re left with is a breeding ground for wildfires in a state where wildfires are already rampant—particularly this time of year.