As of July 17, it enters the stage prohibiting campfires, charcoal grills and outdoor smoking throughout the park’s campgrounds and residential areas.

Drought, a warming climate and decades of firefighting policies that suppressed natural fires have turned many grasslands and forests across the West into tinderboxes.

A wildfire that tore through a historic Grand Canyon Lodge​ had been allowed to burn for days before erupting over the weekend, raising questions about federal officials' decision not to aggressively attack it right away.