What Is SIGMET in Aviation?
SIGMET defined for aviation professionals, with its operational or commercial use, document context and related terminology.
How the Term Is Used in Aviation
A SIGMET is an aviation weather advisory for significant meteorological phenomena that may affect aircraft safety, such as severe turbulence, severe icing, volcanic ash or thunderstorms depending on the region.
Aviation Glossary
Term: SIGMET
Category: Aviation Regulation & Traffic Rights
Regulatory Context
SIGMET sits within the regulatory framework governing international operations, airspace, border formalities, weather information or commercial traffic rights. Requirements can differ by state and by type of operation.
Operational Use
Dispatchers and crews use SIGMETs in route planning and tactical weather avoidance.
What Operators Need to Check
Verify the responsible authority, lead time, current validity, required documents and whether a separate airport, customs, immigration, slot or traffic-right approval is also needed.
Related Aviation Topics
Related ACMI World coverage includes international charter compliance, international private jet planning, diplomatic flight clearance, military airport access rules and DGCA wet-lease rules in India.
Dispatchers and crews use SIGMETs in route planning and tactical weather avoidance.
SIGMET FAQ
What does SIGMET mean in aviation?
A SIGMET is an aviation weather advisory for significant meteorological phenomena that may affect aircraft safety, such as severe turbulence, severe icing, volcanic ash or thunderstorms depending on the region.
Why does SIGMET matter?
Dispatchers and crews use SIGMETs in route planning and tactical weather avoidance.
Where would an aviation professional encounter SIGMET?
It is commonly encountered in aviation regulation & traffic rights documents, procedures, calculations or operating discussions where the underlying technical or commercial issue is relevant.
Is the requirement identical in every country?
No. International standards influence aviation regulation, but permits, filings, operating approvals and enforcement remain jurisdiction-specific.