An Amazing New Tool

You often hear of "black ice." One form of black ice can form when fog deposits ice directly on roadways without precipitation falling from the sky. That is known as "freezing fog."

A new type of satellite image depicts previously hard-to-detect freezing fog in shades of orange and red. Here is an example showing the freezing fog in the tough terrain of the Pacific Northwest.

University of Wisconsin, click to enlarge

More progress. This data will allow us to help keep traveling safer through better monitoring of dangerous conditions.