What does "SFC VIS 1/2" indicate in a METAR report?

"SFC VIS 1/2" in a METAR report indicates the surface visibility at one-half statute mile. The abbreviation "SFC" refers to "surface," which means the observation is made at ground level. The term "VIS" stands for visibility, and the "1/2" specifically quantifies that visibility distance, specifying that it is one-half mile.

While it may appear that the option involving significant visibility control could relate to overall visibility conditions, it doesn't accurately define the term used in this context. Similarly, surface wind direction and any general mention of visibility without a specific measurement do not align with what is conveyed by the "SFC VIS 1/2" notation. The correct interpretation is critical for understanding conditions affecting aviation, as visibility directly impacts flight safety and navigation.