In the METAR report of CYWG, what does VV003 represent?

In a METAR report, the notation "VV003" indicates "Vertical Visibility" at a height of 300 feet. Vertical visibility is used when the cloud base is obscured or when visibility cannot be determined because of obstructions. This is particularly relevant in situations with fog, heavy precipitation, or other conditions that limit visibility.

In this context, the number "003" refers specifically to the vertical visibility measured in hundreds of feet, meaning there are 300 feet of vertical visibility. This helps pilots understand how far they can see vertically into an obscured sky, which is critical for safe navigation and decision-making.

Understanding this element of METAR reports is essential for pilots, as it directly influences weather assessment and approach decisions, especially in low-visibility situations.