What does the symbol "-" represent in weather reporting?

The symbol "-" in weather reporting indicates "light" precipitation. This convention is commonly used in aviation meteorology to provide pilots and other aviation personnel with quick and clear information about weather conditions. When you see this symbol, it tells you that the precipitation, such as rain, snow, or drizzle, is occurring at a light intensity, which can be significant for flight operations, as it impacts visibility and aircraft performance.

In the context of meteorological information, understanding these symbols is crucial for ensuring safety and efficient planning by pilots and air traffic controllers. The other symbols and terms used in weather reporting have different meanings, such as moderate or variable conditions, but using the "-" specifically denotes that the precipitation is not heavy, which is important to interpret accurately for assessing flying capabilities during such conditions.