Dust Storm in the North Polar Regions

Caption NASA:"This is an image of Mars taken from orbit by the Mars Reconnaissance Orbiter's Mars Color Imager (MARCI). The Red Planet's Polar Ice-Cap is in the middle of the image. Captured in this image is a 37.000 square-kilometer (almost 23.000 miles) Dust Storm that moved counter-clockwise through the Phoenix Landing Site on Oct 11, 2008, or Sol 135 of the Mission.

Viewing this image as if it were the face of a clock, Phoenix is shown as a small white dot, located at about 10 AM. The storm, which had already passed over the Landing Site earlier in the day, is located at about 9:30 AM".