What do SIGMETs specifically address?

SIGMETs, or Significant Meteorological Information warnings, are specifically designed to identify weather conditions that pose a hazard to aircraft operations. This can include phenomena such as severe turbulence, thunderstorms, icing, and volcanic ash, which can significantly affect the safety of flight operations. These alerts are issued universally, meaning they are relevant to all aircraft, regardless of type or size.

Unlike routine weather observations that might not highlight severe conditions, and contrary to weather data that may only focus on light aircraft or conditions that improve flying, SIGMETs concentrate solely on serious hazards that could compromise the safety of any aircraft in the affected area. Therefore, understanding the significance of SIGMETs is crucial for pilots in ensuring that flight planning and operations account for possible risks posed by severe weather.