The dust arises from the Great Salt Lake Desert, which has sediments that can provide ample material for dust storms. Cloud banks surround the dust, especially in the south and east. The clouds might result from the same weather pattern that brought the dust-stirring high winds.
NASA image courtesy Jeff Schmaltz, LANCE/EOSDIS MODIS Rapid Response Team at NASA GSFC. Caption by Michon Scott.
- Terra - MODIS