Multiple choice

For which of the following phenomena is a SIGMET issued?

  1. Active thunderstorm

  2. Heavy hail

  3. Dust storm

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A SIGMET (Significant Meteorological Information) is issued for all the listed phenomena - active thunderstorms, heavy hail (typically 5mm or larger), dust storms, as well as other severe weather conditions like severe icing, severe turbulence, volcanic ash, and hazardous conditions like windshear. SIGMETs are issued to warn aircraft of weather hazardous to flight operations. Since all three options (A, B, C) are valid SIGMET conditions, option D is correct.

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