Precipitation falling from a cloud, usually in wisps or streaks, but evaporating before it reaches the ground.
Visible wisps or strands of precipitation falling from clouds that evaporate before reaching the surface.
It is a patch of precipitation that evaporates before it reaches the ground. It appears as wisps or streaks of rain or snow falling out of a cloud. As the precipitation evaporates, it cools the air and starts a down draft. In certain cases, shafts of virga may precede a microburst; see dry microburst.