Definition
A narrative product issued by the National Weather Service's Aviation Weather Center that explains the reasoning behind the current and upcoming aviation weather forecasts. It describes the weather patterns expected to affect aviation operations, the confidence forecasters have in their predictions, and the rationale for any significant changes from previous forecasts.
Plain English
A written explanation from weather forecasters that tells pilots not just what weather is expected, but why they expect it and how sure they are about it.
Context Anchor
Seen during preflight weather planning, especially when a pilot wants more background than a simple forecast line provides.
Derivation
“Forecast” comes from the idea of “casting” or estimating something ahead of time. “Discussion” means an explanation of the thinking behind it. Together, the term points to more than just predicted weather; it gives the reasoning behind the prediction.
Why Pilots Care
Reveals the forecaster's confidence and possible changes ahead, helping pilots plan flights with better awareness of risks.
Intuition Check
Do not read “discussion” as a casual chat or a pilot report. Here it means an official written explanation from weather forecasters about expected flying weather and the reasons for that forecast.
Example Sentence 1
Before her cross-country flight, she read the Aviation Forecast Discussion to understand why thunderstorms were expected to develop later in the afternoon.
Example Sentence 2
Checking the Aviation Forecast Discussion showed that a front would bring stronger winds later in the afternoon.