PHOENIX (AZFamily) — What exactly is a Red Flag Warning? These are issued when conditions are present that would lead to a new fire or an existing fire spreading quickly.

For instance, a Red Flag Warning is currently in effect for north of the Grand Canyon into the Kaibab Plateau until 8 p.m. Friday. Of course, with the Dragon Bravo Fire nearby, this is not what we want to see.

The two key ingredients for these warnings are wind and low humidity, although the thresholds vary depending on the region. Today is a perfect example; note the wind forecast and humidity forecast for the current Red Flag Warning from the National Weather Service.

Sometimes, you will hear about a Fire Weather Watch. How is this different from a Red Flag Warning? A Red Flag Warning is issued when conditions for r

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