What information does a Significant Meteorological Information (SIGMET) provide?

A Significant Meteorological Information (SIGMET) provides crucial information about significant weather events that may affect aviation safety. It is specifically issued to alert pilots and air traffic controllers to hazardous conditions such as severe thunderstorms, turbulence, icing, or volcanic ash that could impact flights. The primary purpose of a SIGMET is to inform aviation stakeholders about weather phenomena that are significant enough to pose a risk to aircraft operations.

The information conveyed in a SIGMET focuses on phenomena that are either currently occurring or are expected to occur within a specific area and time frame. This allows pilots to make informed decisions about flight routes, altitude adjustments, and other operational considerations to ensure safety.

In contrast to general weather patterns or advisories for minor changes, a SIGMET specifically targets critical weather events that require immediate attention and precaution. Therefore, the option reflecting advisories about significant weather events accurately summarizes the primary function of a SIGMET.