What does the weather code FG mean?

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Multiple Choice

What does the weather code FG mean?

Explanation:
Weather reporting relies on short abbreviations to describe what’s seen near the ground, and FG is the code used to indicate fog. Fog is a dense form of low-lying cloud that greatly reduces visibility, formed when air near the surface cools and moisture condenses. In standard weather codes, other surface phenomena have different abbreviations—Mist is BR, Haze is HZ, and Dust is DU—so FG uniquely maps to fog, not those other conditions.

Weather reporting relies on short abbreviations to describe what’s seen near the ground, and FG is the code used to indicate fog. Fog is a dense form of low-lying cloud that greatly reduces visibility, formed when air near the surface cools and moisture condenses. In standard weather codes, other surface phenomena have different abbreviations—Mist is BR, Haze is HZ, and Dust is DU—so FG uniquely maps to fog, not those other conditions.