When the ether knows that revelation of the Christ is near, he begins to cleanse the atmosphere. The fastest and most efficient methodology for cleansing the ether is to freeze all of its essential elements. Doing so causes the chemical reactions to stop or to slow down, enabling them to be cleansed more efficirntly.
When the atmosphere is sufficiently cleansed, the frozen drops of water in the atmosphere will appear to be snowflakes. They are easily distinguishable from snow because they are more akin to hail, and don't melt as easily as snow. They also freeze the lower atmosphere as they fall, while snow warms the lower atmosphere.
The Lord God Father In Heaven, El Elohim