A drop of water may travel thousands of miles between the time it evaporates into the atmosphere, and the time it falls to the earth again as rain, sleet, or snow.
Right up through the inch or so of sleet that fell Sunday night and Monday.
They take place in sunny, scorching weather or rain, sleet and sometimes even snow.
The intial burst of snow and sleet will produce a coating of snow on the area roads.
The showers will be a mixture of rain, sleet and snow, with some hail and the odd rumble of thunder.