From: Mike Pellegatti, WildVisions, Inc., Phoenix, Arizona, 623-516-1975
Here’s another tip for creating heat waves. Shoot over the hood of a vehicle after its been run and the heat from the engine will give you great heat waves for the shot. BTW, heat waves can be in any temperature. From minus 30 to plus 120. Heat waves are caused from a difference in the ground temp and the air temp and moisture in the air helps make the best heat waves. In the desert we typically have better mirages and heat waves in the winter than the summer or after a rain because of the moisture.