Which of the following ratios does NOT represent heavy, wet snow?

The correct answer indicates that the ratio represented by the choice does not align with the characteristics of heavy, wet snow. In meteorological terms, snow density is often characterized by the snow-to-water equivalent ratio. Heavy, wet snow typically has a ratio of 10:1 or less, meaning that 10 inches of snow would melt down to 1 inch of water. Ratios like 30:1 or more suggest lighter, fluffier snow, which has a lower density and is not representative of heavy, wet snow.

The ratio of 15:10 simplifies to 3:2, which indicates a denser form of snow that aligns more closely with wetter snow than lighter, fluffier types. However, the other options give specific numerical references compared to the standard understanding of snow density. While 10:1 represents very wet and heavy snow, ratios like 30:1 indicate the opposite. Therefore, the ratio that does not accurately portray heavy, wet snow characteristics is the one given in this correct answer.