Leaves turning "purple" is not a sign of "fall" but is a sign of ultraviolet radiation damage.

The seasons are like a month or more, now, ahead of schedule. At this rate, expect a killing frost in early October or even late September.

Moreover, the ultraviolet radiation damage will cause increased cases of skin cancers and worse. Further, this ultraviolet radiation is added to the nuclear fallout we are receiving from Fukushima. Expect thyroid cancer incidence to go through the roof. You had better be ingesting iodine via kelp or other supplement (to keep out iodine-131) and lots of calcium and potassium to keep out strontium 90 and cesium 137. Wear long sleeves when outdoors and a hat... eventually, as the pole shift greatly reduces the magnetic shield, you'll not be able to go outside at all... and eventually will have to be 3 to 20 feet under ground to avoid being cooked by cosmic and solar radiation.