A tornado warning had just sounded as I saw this cloud coming up over the trees in the city park across from my studio. Officially classified as a haboob after the storm passed, I was able to grab 4 quick shots with my Pentax K-7 and 18-135mm Pentax lens before I headed to safety of my basement. ISO 400 1/250 @f4. Later I was able to stitch the images together in Photoshop to create this 180 degree view of the storm.