weather theoryFAA-published sample question (UAG, Aug 2021)
You have received an outlook briefing from flight service through 1800wxbrief.com. The briefing indicates you can expect a low-level temperature inversion with high relative humidity. What weather conditions would you expect?
A
Smooth air, poor visibility, fog, haze, or low clouds.✓ Correct Answer
B
Light wind shear, poor visibility, haze, and light rain.
C
Turbulent air, poor visibility, fog, low stratus type clouds, and showery precipitation.
Explanation
A temperature inversion is a very stable layer that suppresses vertical mixing, so the air beneath it is smooth while moisture, haze and pollutants stay trapped near the surface. With high relative humidity, PHAK Ch. 12 notes this produces poor visibility with fog, haze or low clouds. Turbulent air and showery precipitation belong to unstable air, and an inversion is not associated with rain showers.
Related weather theory questions
Keep practising
Study more FAA Remote Pilot (Part 107) questions, or take a timed practice quiz.