What prefix is used in remarks to indicate weather phenomena beyond 10 statute miles from the point of observation?

The correct prefix used in remarks to indicate weather phenomena that occur beyond 10 statute miles from the point of observation is "DSNT." This term stands for "distant" and is specifically designated for referencing weather events that are outside the immediate vicinity of the observation site, allowing pilots and meteorologists to understand conditions that might be relevant but are not directly affecting the location.

Using "DSNT" helps in providing a clear communication between air traffic control and pilots regarding weather conditions, ensuring safety and operational efficiency. For instance, if heavy rain or thunderstorms are reported as distant, pilots are able to ascertain that while in the immediate area the weather may be clear, there is potential for weather changes en route. Recognizing the use of this prefix is essential for any aviation professional when interpreting weather remarks.