What is the encoding for light rain?

The encoding for light rain is represented by the symbol "-RA". In meteorological reporting, especially within the context of aviation weather, various intensity symbols are utilized to provide a clear understanding of the conditions. The use of the prefix "-" indicates light intensity for precipitation, which in this case refers specifically to rain.

This coding system is standardized, ensuring consistency in reporting weather conditions to pilots and other aviation personnel. By using "-RA", people interpreting weather reports can quickly ascertain that light rain is occurring, which is critical for flight safety and operational decision-making.

The other encodings mentioned would imply different conditions or intensities; for example, "+RA" signifies heavy rain, "R" alone does not specify rain intensity, and "RA" typically represents rain without indicating its intensity. This nuance in encoding is essential for accurate and safe navigation in aviation contexts.