My original reason for my trip to Arizona (and more specifically Sedona) was to photograph the milky way. We had 2 nights in Sedona and both nights were cloudy but the clouds did make for some beautiful sunsets & sunrises. This was sunset from Airport Mesa.
Tech info: 6 second exposure, ISO 50, f/20 - I used 2 different filters stacked with my Lee Filter System. 1 was a 2 stop soft GND filter and the other was a 3 stop Reverse GND filter (used for sunsets when the brightest light is on the horizon)