Monsoon Special 2012: Dust storm leaves its mark

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PHOENIX -- As we head into this year's monsoon season, many Arizonans can't help but wonder if we're in for a repeat of last year's dry and dusty summer. 

We didn't get much rain in the 2011 monsoon and we had several major dust storms, including a mile-high wall of dust that pushed through the Valley on July 5.

That storm was caused by a thunderstorm that collapsed over the parched desert just north of Tucson. The outflow picked up dust that moved north toward Phoenix, packing 60 mph winds.

The evening commute came to a halt as the dust turned daylight to dark, and even planes trying to leave Sky Harbor International Airport were grounded.