Plain English Meaning

A weather map that shows, at a glance, which airports currently have good or bad flying weather. Each airport appears as a colored marker, and the color tells you whether conditions there are good for visual flying, marginal, or instrument-only.

Full Definition

A map-based display of current surface weather observations, in which each reporting station is shown as a colored symbol (typically a flag or dot) indicating the flight category at that airport — VFR, Marginal VFR, IFR, or Low IFR — based on the ceiling and visibility reported in the underlying .