During a red-flag warning, residents are urged to avoid risky behavior like campfires or other open flames, smoking or ...

The two key ingredients for these warnings are wind and low humidity, although the thresholds vary depending on the region.

During wildfire season, the National Weather Service has two advisories that inform people of dangerous conditions that could lead to blazes: a fire weather watch and a red flag warning.

The affected area saw southwest winds of 10 to 20 mph with gusts up to 35 mph, according to the red flag warning. In addition to Monday’s warning, Pitkin Alert on Wednesday issued a fire weather watch ...