My take on the media's coverage of the weather is this:
The meteorologists KNOW how destructive these storms can be and also know how blasé some people are about it, so they really emphasize it. Big storms also happen to be good for business, which is not lost, I'm sure, on station management. Weather forecasting is tremendously tricky, with many variables. Even with supercomputers it's impossible to be exact. No one really knows exactly how things will play out.