July 11, 2005. The next hurricanes are on their way as seen in the lower right corner. Noted: Just as a hurricane locally cleans the air and is refreshing when it passes, "Dennis" has done that to the aire masse over the USA. I have a different satellite picture that better illustrates it. But, basically all the pollution was blown away. The storm is huge. Noted, the 'dirty' aire (white color) is returning to the North American continent on both coasts. It' was temporarily moved around by "Dennis" but the pollution of the USA is so dense it simply rolls back in over the continent. It won't completely blow away.