Definition
An automated graphical aviation weather product produced by the National Weather Service that forecasts the probability and severity of icing conditions in the atmosphere over the contiguous United States. It depicts forecast icing at multiple altitudes and at forecast times typically out to 12 hours, allowing pilots to identify regions where airframe icing is likely.
Plain English
A weather chart that predicts where and when ice is likely to form on aircraft in flight, shown at different altitudes and a few hours into the future.
Context Anchor
Seen during preflight weather planning, especially when clouds, freezing temperatures, or winter weather could affect the route or altitude.
Derivation
Forecast means to estimate conditions before they happen. Icing means ice forming on the aircraft. Product, in this weather context, means an issued weather tool or display, not a physical object for sale.
Why Pilots Care
Icing reduces lift and can cause loss of control; the product helps pilots choose safer altitudes or routes.
Grounding Statement
If the route passes through cold clouds, the Forecast Icing Product helps show where water in those clouds may freeze onto the aircraft.
Intuition Check
Do not read “forecast” as a guarantee. The product shows expected or possible icing conditions, so pilots still compare it with current weather, reports from other pilots, and official weather information.
Example Sentence 1
Before departure, the pilot checked the Forecast Icing Product and saw a high probability of moderate icing along the route at 9,000 feet.
Example Sentence 2
During the briefing the specialist highlighted an area of high icing probability on the Forecast Icing Product map.