What is the issuance frequency of Convective Sigmets?

Convective Sigmets are issued hourly at 55 minutes past the hour. This timing is designed to provide pilots with the most current and relevant information regarding significant convective weather phenomena, such as severe thunderstorms, tornadoes, or other related hazards. The frequency ensures that pilots have timely updates to make informed decisions during flight operations, especially in adverse weather conditions.

By adhering to this specific issuance time, the information remains consistent and reliable, which is critical for flight planning and real-time navigation. Therefore, any misunderstanding about the issuance time could lead to unpreparedness for changes in weather conditions that may affect the safety of a flight.