The Current Icing Potential (CIP) and the Forecast Icing Potential (FIP) are highly sophisticated algorithms that identify where and when icing is expected, ranging from light icing to Supercooled Large Droplet (SLD) icing. The CIP displays the last hour's icing potential; it is updated at about 15 minutes past each hour. The FIP looks forward for 2 hours then at 3-hour intervals fo 18 hours. Different combinations of severity and probability can be pulled up.
From the CIP/FIP plots page, you can also access icing PIREPS and, most importantly, a chart depicting the freezing level.