What does the abbreviation DRSN represent in aviation weather?

The abbreviation DRSN in aviation weather stands for "Low drifting snow." This term is commonly used in weather reports to indicate the presence of snow that is being blown by the wind at low levels, reducing visibility and potentially impacting flight operations.

Understanding the context of DRSN is essential for pilots and meteorologists when assessing weather conditions for safe flight. Low drifting snow can create significant hazards, particularly in terms of visibility, as it may cause whiteout conditions. It is important to monitor reports of low drifting snow closely, especially during winter operations when such conditions might arise unexpectedly.

The other abbreviations represent different weather phenomena, but DRSN specifically refers to the conditions associated with low drifting snow, which is crucial for aviation safety.