Definition
A continuous or scheduled radio broadcast of aviation weather information transmitted by a Flight Service Station or other authorized facility, providing pilots with current conditions, forecasts, and significant weather advisories along major flight routes and in terminal areas.
Plain English
A radio service that pilots can tune in to hear up-to-date weather reports while on the ground or in flight, without having to call anyone or ask for the information.
Context Anchor
Pilots may encounter Broadcast Weather Service when checking weather before flight or listening to weather information over an aviation radio source in flight.
Derivation
"Broadcast" originally meant scattering seed widely by hand, later adopted by radio to mean sending a signal out widely so that anyone with a receiver can pick it up. That captures the idea here: the weather information is sent out continuously, and any pilot tuned to the right frequency can listen.
Why Pilots Care
Gives pilots immediate awareness of changing weather that could affect safety, routing, or go/no-go decisions.
Intuition Check
Do not read “broadcast” as a two-way conversation. In this term, it means weather information is being sent out for pilots to receive; the pilot may simply listen.
Example Sentence 1
Before takeoff, the pilot tuned in the Broadcast Weather Service to check current conditions along the route.
Example Sentence 2
While flying cross-country, the crew monitored the Broadcast Weather Service for updates on approaching thunderstorms.