What does a WS SIGMET report indicate?

A WS SIGMET report specifically indicates significant meteorological conditions that can affect the operation of aircraft. These reports are crucial for flight safety as they encompass severe weather phenomena, such as turbulence, thunderstorms, icing, or volcanic ash, which can pose risks during flight. The WS SIGMET is intended for pilots and air traffic controllers to be aware of and make informed decisions regarding flight routes and safety measures.

The focus of the WS SIGMET is on existing or imminent severe weather conditions that can directly impact aviation, rather than general or forecasted weather. This distinguishes it from other types of weather reports that might provide broader observations or forecasts without emphasizing the direct implications for flight operations.