How is a gale warning represented at night?

A gale warning is represented at night using a red over white signal. This specific combination communicates that there is a gale warning in effect and is part of the visual signals used by mariners to convey weather conditions effectively. The red color indicates a hazardous condition, while the white adds clarity to the signal, helping to ensure that it is distinct and recognizable against the backdrop of nighttime. Mariners rely on these standardized signals to receive crucial safety information about weather conditions that could impact navigation and vessel operations.

Other representations, such as flags or pennants, do not correspond to the specific standard for a gale warning at night, further underscoring the importance of understanding the correct symbols for safe maritime practices.