How is an increase of 3 inches in snow depth reported if the total depth is 8 inches?

The correct format for reporting an increase in snow depth is to specify the amount of increase alongside the total depth. When there is an increase of 3 inches in snow depth, it is reported as "SNINCR," which indicates the increase in snow depth.

In this case, the total depth is 8 inches, and specifying the increase helps provide a clearer understanding of the snow conditions at that particular time. Thus, "SNINCR 3/8" denotes that there has been an increase of 3 inches, and the total depth is currently 8 inches. This maintains clarity and ensures that meteorologists and other relevant personnel can understand the snow accumulation status quickly and accurately.

The other options do not follow the standard reporting format for incremental snow depth increases or do not accurately convey both the increase and the total depth, making them less suitable for improved communication in weather observations.