What is the meaning of the code "RA" in weather reports?

The code "RA" in weather reports specifically denotes "Rain." This code is used in aviation weather reports to concisely communicate precipitation conditions to pilots and air traffic controllers. Understanding these codes is crucial for safe flight operations, as they provide essential information about weather that can affect visibility, aircraft performance, and overall safety.

While there are other codes for varying intensities and types of precipitation, "RA" specifically refers to rain in general, without specifying whether it is heavy or light. Knowing this distinction helps in interpreting weather reports accurately, ensuring that pilots make informed decisions based on the current weather conditions.