Summertime monsoon thunderstorm with lightning striking over the Mcdowell Mountains in Scottsdale Arizona putting on a fantastic light show. The lightning is striking in between Scottsdale and Fountain Hills. It is like clock work in the late summer starting around sunset and going into the night. The average striking length of a regular lightning is about 2 to 3 miles and carries electricity of nearly 100 million volts. A lightning strike can be seen from a distance of over 100 miles however, the visibility depends on several factors like air clarity, height of the bolt and even the elevation of the viewer. Photo: © James "Bo" Insogna.