What is a characteristic of BLPY on a METAR?

The characteristic of BLPY on a METAR is defined as blowing spray. This term is used in aviation weather reporting to describe a specific condition where the wind lifts and disperses water droplets from the surface, creating a spray-like effect. This condition can affect visibility and is crucial for pilots to be aware of, as it can have implications for takeoff and landing operations.

Blowing spray is particularly relevant in coastal or maritime environments where large bodies of water can generate the necessary wind and conditions for this phenomenon to occur. The existence of BLPY in a METAR indicates to pilots and dispatchers that they should be cautious about potential visibility reductions that blowing spray can cause during flight operations.

Understanding this term allows aviation professionals to make more informed decisions regarding flight safety and operations in varying weather conditions.