The snow depth increased 3 inches between 1300 and 1400 UTC. How would this be reported in column 14 if the depth of snow on the ground at 1200 and 1300 UTC was 6 inches?

The correct reporting of snow depth increase is expressed with a specific format that captures both the amount of snow that has fallen within a given time period and the total depth before that increment began.

In this case, we know that the snow depth at 1300 UTC was 6 inches and that it increased by 3 inches by 1400 UTC. The increase is what is reported in the first part of the notation, which is "SNINCR 3," indicating a 3-inch increase in snow depth.

The second part of the notation reflects the total snow depth on the ground after this increase. Since the depth was 6 inches at 1300 UTC and then increased to 9 inches (6 inches + 3 inches) at 1400 UTC, the total snow depth after the increment would be 9 inches.

Therefore, the full reporting in column 14 would be "SNINCR 3/9," indicating an increase of 3 inches, with a new total of 9 inches of snow on the ground after the increase. This reporting format accurately conveys both the increment and the updated total depth, consistent with meteorological standards.