What type of conditions does a non-convective SIGMET address?

A non-convective SIGMET is specifically designed to inform pilots about significant weather phenomena that are not associated with convective activity, such as thunderstorms. These may include conditions like severe turbulence, icing, volcanic ash, sandstorms, or low visibility due to dust. The purpose of this type of advisory is to ensure that pilots are aware of potential hazards in their flight path that can impact safety, regardless of whether the weather is related to convective processes or not.

This distinction is crucial, as pilots need to differentiate between convective and non-convective conditions to make informed decisions about their routes and flight operations. Recognizing the unique hazards that a non-convective SIGMET outlines helps in anticipating and mitigating risks associated with flying in adverse weather conditions.