The latest on the Dragon Bravo and White Sage fires. Plus, the trails, lodges, and campgrounds that are closed to visitors.

What fueled the explosive growth of the Dragon Bravo Fire was a mix of gusty winds, dry air and above-normal heat – weather conditions experts described as atypical for this time of year, when monsoonal moisture typically tamps down wildfire risk across Arizona.

A new emergency system for the Grand Canyon is getting life-saving messages to people with little cellphone service.

As two wildfires continue to grow in northern Arizona, the National Park Service is defending its handling of a lightning-sparked wildfire that destroyed the nearly century-old Grand Canyon Lodge and

The NPS recommends avoiding hiking the Grand Canyon's inner trails between 10 a.m. and 4 p.m., when temperatures are at their peak. Temperatures in the inner canyon can reach over 120 degrees Fahrenheit in the shade, creating "extremely hazardous conditions for hikers," the NPS said.

The Dragon Bravo fire has burned more than 5,000 acres and destroyed numerous historic Grand Canyon structures.