What are the four main categories of radar reflectivity?

The four main categories of radar reflectivity are indeed Light, Moderate, Heavy, and Extreme. These categories are used by meteorologists to classify the intensity of precipitation as detected by radar systems.

Light reflectivity typically indicates light rain or precipitation, while Moderate reflects a more substantial amount of rainfall. Heavy indicates significant rainfall or storms that may produce notable impacts, and Extreme signifies very intense precipitation that can lead to severe weather conditions, such as thunderstorms or flooding. This classification helps pilots and meteorologists assess weather conditions more effectively and make informed decisions regarding flight safety and risk management.

The other options present categories that do not accurately represent the standard classifications used in meteorological radar. By focusing on these four distinct levels, pilots can better interpret radar data related to precipitation and adjust their flight plans accordingly.