By the time this is published, a lot more will be known about this week's potential winter storm than is known at the time this is being written. As of Monday (the time of writing), the potential storm was just that — a swirl of wind passing southward down the west coast of British Columbia. By the time this is published Wednesday, the swirl will have moved down the West Coast, crossed the Rockies and begun to emerge into the Great Plains as a storm.
It is an advantage of our living in the age of supercomputers that we are able to get such advanced notice of a potential storm. But the devilish part of a winter storm is found in details too fine to be detected several days in advance, even by today's fast computers. It is hard knowing a storm is coming and not being able to offer the important details, and it is even harder to convince the public to be patient and wait for those details.