AIRMET advisories cover what type of weather conditions?

AIRMET advisories are specifically designed to provide information about significant weather conditions that may impact the safety of flight operations, particularly for smaller aircraft. They focus on moderate turbulence and icing, as well as other weather phenomena that may not reach the level of a severe weather warning (which would be covered by a SIGMET).

The importance of B lies in its concentration on moderate phenomena that can be hazardous for pilots, especially those flying lighter aircraft which are more susceptible to these conditions. AIRMETs inform pilots of potentially dangerous weather, allowing them to make informed decisions regarding flight routes and safety.

While other weather conditions can certainly affect flying, AIRMETs are not used to cover severe thunderstorms or in-flight turbulence specifically; instead, they are aimed at providing alerts about moderate conditions that could impact a broader range of flight operations. This makes the focus on moderate turbulence and icing the correct choice.