weather theoryFAA-published sample question (ATM, Aug 2021)
A flight is scheduled at daybreak. The current weather is rainy, but is expected to clear with temperature/dew point spread forecast to be 10°C/10°C and winds at 330/5. What weather conditions should you expect?
A
Visual meteorological conditions until later in the day.
B
These conditions could produce radiation fog.✓ Correct Answer
C
Dense fog that deepens later in the day.
Explanation
After rain the ground is moist; clearing skies, a temperature equal to the dewpoint (10/10) and light wind at daybreak are the classic conditions for radiation fog (PHAK Chapter 12). It normally burns off as the day warms rather than deepening.
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