Definition
Weather information provided to pilots by Flight Service while they are airborne, delivered by radio on request. The service includes current conditions, forecasts, hazardous weather advisories, pilot reports (PIREPs), and updates relevant to the route of flight, allowing pilots to make decisions in the air based on the latest information.
Plain English
If you are flying and need to know the weather ahead, you can call Flight Service on the radio and a specialist will give you up-to-date weather for your route.
Context Anchor
A pilot uses this when contacting Flight Service after departure, especially if clouds, visibility, wind, storms, or the destination weather are changing.
Why Pilots Care
Enables pilots to receive updated conditions mid-flight and adjust routing or altitude for safety.
Intuition Check
Do not think of this as a normal news-style weather report. In this context, it is aviation weather information given during the flight to support immediate pilot decisions.
Example Sentence 1
About halfway to the destination, the pilot contacted Flight Service for an inflight weather briefing and learned that thunderstorms were forming along the planned route.
Example Sentence 2
Inflight weather briefing services confirmed the front had moved, so the pilot continued.