In 2007 there were multiple fires burning in the San Diego region. These fires caused a lot of confusion and fear, as well as being the reason for one of the largest evacuations ever in the state.
Below is a quick map of the various fires that burned in the region. Collectively these are known as the 2007 Firestorm.
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During the month of October, which most people think of as wet wintertime, we get seasonal santa ana winds in the region. These are dry, warm winds that blow from the east over the desert, instead of the prevailing winds from the west over the ocean. These winds, along with high heat and dry conditions, combine to create the worst time for potential fires in the region.