What observation indicates very light snow in the weather report?

The indication of very light snow in a weather report is represented by the symbol "-SN." In aviation weather reports, the prefix "-" signifies light precipitation. When this is combined with "SN," which stands for snow, the complete symbol "-SN" clearly communicates that there are conditions of very light snow occurring.

In meteorological terms, this specific representation helps pilots and other weather observers quickly understand the intensity of the precipitation. Knowing that the weather conditions include just a light amount of snow can significantly influence flight operations and planning.

The other choices represent different types of weather phenomena. "SN" without the prefix indicates regular snow, which may not be very light. "FZSN" denotes freezing snow, indicating icy conditions rather than just light snow. Lastly, "TS" stands for thunderstorms, which is entirely unrelated to snow conditions. Understanding these different symbols allows for accurate weather interpretation essential for safety and planning in aviation.