1 inch
Yes it doesn't matter what it is. An inch is an inch.
The ratio of snow to water can vary a great deal depending on the vertical profiles of temperature and moisture, and how they change during a storm. Typically 1 inch of rain is equal to 1 foot of snow, a 12-1 ratio. Depending on the temperature and moisture profiles of the snow growth region of the atmosphere and the origin area of the storm system, that ratio can go higher, say 20-1, which would be 20 inches, or lower, say 6-1 or so. 12-1 is most forecasters starting point, and if you go to your local NWS page and read the area forecast discussion, they usually tell what ratio they believe a system will have as it moves through your area.
It can vary a lot - a common figure would be about half an inch of rain, but you could have an inch of water with very wet snow.
Should be almost 1/4 inch new. Most will be good in snow to 1/8 inch, less than that is not much good.
An inch or two is quite a bit for us here in the Central Valley of California.
Generally 3-4 inches of snow, in 2011, less than 1 inch of snow.
By unit of length and distance and conversion ,we can say that 1 cm=0.39370079 inch 25 cm=9.842 inches
It can vary widely. 1 inch of water can produce 2 inches of extremely wet snow or as much as 30 inches of fluffy dry snow. A rule of thumb (and this is a very general rule) is that 1 inch of water is in 10 inches of the average snowfall. To answer your question, it may be about 1.2 inches of rain using this formula.
1 quarter of and inch.
I suppose it is really a matter of your opinion. If more snow is coming, I would shovel to decrease the amount of work later, but if it is just one inch, and nothing else, probably not.
it depends on how much of an area the snow is covering