What is the purpose of SIGMET reports?

SIGMET reports are specifically designed to provide warnings about potentially hazardous weather conditions that could affect the safety of flight operations. These reports are crucial for pilots as they alert them to phenomena such as severe turbulence, thunderstorms, volcanic ash, and other conditions that could pose a risk during flight.

The content of SIGMET reports is focused on real-time weather information that is critical for making informed decisions during flight planning and execution. This ensures that pilots are aware of any immediate dangers in their flight path, which is essential for maintaining safety.

The other options do not align with the intended purpose of SIGMET reports. For instance, indicating pleasant flying conditions does not serve an operational purpose, as the focus is on hazards. Similarly, while hourly weather updates are valuable, they are not the function of SIGMET, which addresses specific hazards rather than offering routine updates. Oceanic flight information is also outside the scope of SIGMET reports, as they concentrate on hazardous weather events rather than general flight routing information.