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Fog most directly impacts small unmanned aircraft system (sUAS) operations by
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Fog is forecast to form when the surface air temperature reaches the dew point. The current temperature is 68°F, and the dew point is 62°F. After sunset, the temperature is expected to decrease at a rate of 1.5°F per hour. How many hours after sunset will fog most likely form?
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Refer to Figure 15, which depicts Terminal Aerodrome Forecasts (TAFs) for KMEM and KOKC. According to the TAF for KMEM, a temporary period of fog (FG) with visibility of 1/2 SM is forecast. The primary effect of this fog on small unmanned aircraft systems (sUAS) performance is
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(Refer to Figure 15.) According to the TAF for KMEM, a temporary condition of 1/2 SM fog is forecast between 1212Z and 1214Z. This fog would most significantly impact the performance of a small unmanned aircraft system (sUAS) by