What intensity categories do ATC facilities using radar weather processors use to describe precipitation?

The intensity categories used by ATC facilities utilizing radar weather processors to describe precipitation are specifically defined as light, moderate, heavy, and extreme. These categories provide a clear and straightforward classification of precipitation intensity, which is critical for air traffic management and safety.

Light precipitation indicates minimal impact on flight operations, while moderate suggests a more noticeable effect. Heavy typically represents significant rainfall that could impact visibility and aircraft performance, and extreme indicates very intense precipitation that could be hazardous. This classification helps pilots and air traffic controllers make informed decisions regarding flight safety and operational planning.

Other options introduce additional categories that are not part of the standard definitions used by ATC facilities, making them less appropriate in this context. Therefore, the choice that correctly reflects the established categories is the one that lists only light, moderate, heavy, and extreme.