weather theoryFAA-published question bank (Private Pilot, 2008)
If the temperature/dewpoint spread is small and decreasing, and the temperature is 62 °F, what type weather is most likely to develop?
A
Freezing precipitation.
B
Thunderstorms.
C
Fog or low clouds.✓ Correct Answer
Explanation
A small and decreasing temperature/dewpoint spread means the air is approaching saturation, so fog or low clouds are likely to form (PHAK Chapter 12). At 62 degrees F freezing precipitation is not possible, and a narrowing spread alone does not indicate thunderstorms, which need instability and lift.
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