Practice question

What is the primary operational purpose of an en-route SIGMET message issued by a Meteorological Watch Office (MWO)?

To provide 5-day general weather outlooks for airport construction contractors
To report routine hourly temperature and pressure readings at sea buoys
To list daily commercial flight cancellation statistics
To notify air traffic controllers and flight crews of the occurrence or expected occurrence of specified en-route weather phenomena hazardous to the safety of all aircraft

Answer: D — To notify air traffic controllers and flight crews of the occurrence or expected occurrence of specified en-route weather phenomena hazardous to the safety of all aircraft

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