YARNELL, Ariz. (AP) — The wildfire that killed 19 firefighters came at the start of Arizona's monsoon season — a weather phenomenon that brings lightning strikes, gusty winds, dust storms and sometimes rain to the state during the summer months.
The winds that helped fuel the fire were highly unpredictable and contributed to the rapidly shifting nature of the blaze.
Arizona's monsoon season began on June 15, but didn't produce many storms until this past weekend. Unlike the flash-flood-producing storms late in the summer, the early monsoon storms typically have plenty of lightning and wind, but often have little rain.
The rain-less storms combined...