In the remarks section, variable visibility follows which type of visibility?

In the context of aviation weather reporting, the remarks section of a report details specific observations that may not be immediately apparent from the main body of the report. Variable visibility is an indication that the visibility in certain areas may fluctuate rather than remain constant.

The type of visibility that variable visibility follows is tower visibility. Tower visibility refers to the visibility observed from the control tower, which is typically related to the conditions that affect landing and takeoff. This measurement is important for air traffic control and pilot operations, as it reflects what controllers can see from the tower.

When variable visibility is reported, it indicates that there are changes or variations in visibility conditions that could affect air traffic. This is significant for pilots and air traffic controllers in understanding the current operational environment. In this context, the relationship is such that variable visibility reports are aligned with the tower visibility to ensure that all parties are informed about potentially changing conditions observed directly from the tower.

This understanding differentiates tower visibility from other visibility types such as surface, ground, or flight visibility, which might not provide the same level of operational relevance in conjunction with variable visibility.