What is the standard abbreviation for light rain in a TAF?

The standard abbreviation for light rain in a Terminal Aerodrome Forecast (TAF) is "RA." This abbreviation is derived from the word for rain in both meteorological terms and language, ensuring efficient communication among aviation and weather professionals. In TAFs, "RA" specifically signifies rain that is light in intensity, which can be important for pilots and air traffic controllers in understanding the potential impact on flight operations.

The other choices represent different weather phenomena or conditions; while "SH" stands for showers, "DR" denotes drifting snow, and "LR" is not an established abbreviation in TAFs. Thus, the use of "RA" distinctly communicates light rain, aiding in precise and effective meteorological reporting in aviation contexts.