Which statement best describes an AIRMET?

An AIRMET, or Airmen's Meteorological Information, specifically provides information about significant weather phenomena that are below the threshold of a SIGMET (Significant Meteorological Information). AIRMETs are primarily issued for conditions that could be hazardous to light aircraft, such as moderate turbulence, icing, or low visibility due to weather phenomena. They are crucial for pilots operating in smaller aircraft, as they keep them informed about potentially dangerous conditions that may not be severe enough to warrant a SIGMET but still require attention.

The distinction between AIRMETs and SIGMETs is essential; SIGMETs are issued for more severe weather phenomena, such as severe thunderstorms and volcanic ash, which significantly impact all types of aircraft. AIRMETs cover a broader range of moderate conditions that pilots must be aware of for the safety of flight operations.