New colors for icing will be introduced around the time of the version 9.5 release:
Areas expected to experience trace to light icing are light blue, areas expected to experience light to moderate icing are medium blue, and areas expected to experience moderate to severe icing are dark blue.
Icing areas are depicted as turquoise blue boxes in the Profile view.
Maps are updated four times per day and are valid at 0400, 1000, 1600 and 2200 UTC.
Areas expected to experience trace to light icing are light blue, areas expected to experience light to moderate icing are medium blue, and areas expected to experience moderate to severe icing are dark blue.
For the U.S. and Regional U.S., maps are updated hourly for the 03, 06 and 09 hour forecasts. Maps are updated every 6 hours for the 12, 18 and 24 hour forecasts. For international areas, maps are updated every 6 hours for the 12, 18, and 24-hour forecasts.
See also: