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I took this picture a couple of weeks ago ... On a Saturday afternoon, drove north of the city to this location which has great views of the canyon where Rio Santiago runs through, I was on my way to the location hoping for a good sunset, about 10 miles before arriving, I found myself driving through a storm, it was incredibly heavy rain and I my expectations to obtain good images were fairly low, luckily the storm went the opposite way and left the cloud formations seen in the picture.
This an HDR image of 3 raw pictures, bracketed at +1 0 -1, hand held , auto aligned with photomatix