weather signal

noun

1. a visual signal, as a light or flag, indicating a weather forecast.

Example Sentences

He said the survey reflected the "wholly unjustified" industrial action being taken by Aslef and the RMT, knock-on delays from the redevelopment of London Bridge station, and performance issues on Great Northern caused by weather, signal failures and ageing trains.

From BBC

While the answer to both of those questions is a qualified no, there are some parts of the world that have a relatively predictable weather signal when El Niño rolls around.

From Slate

The International Weather Signal Service now covers, in its communications, all portions of the globe.

From Project Gutenberg

If you are near one of the weather signal stations, daily bulletins will be sent to camp upon request; also the weather map.

From Project Gutenberg

If you are near one of the weather signal stations daily bulletins will be sent to camp upon request, also the weather map.

From Project Gutenberg