As Southern California is ablaze with some of the worst fires in the state’s history, public lands officials in bone-dry Southern Arizona are warning that the region is a tinderbox at risk for its own siege of wildfires. They’re calling on the public to be especially cautious in fire-threatened areas. Coronado National Forest lands around Tucson are at risk for “significant wildfire activity for a number of reasons,” said Heidi Schewel, spokeswoman for the forest. “We have abundant, dry fuel at all elevations,” Schewel said. “This includes fine fuels like grasses and bushes at the low-to-middle elevations, and dead branches on trees. At the higher elevations, dry pine needles, forbs and woody plants are dry and available to burn.”