A strong cold front is going to push off the East Coast by early tomorrow. The coldest air of the year on a brisk north wind will move in behind it. There is a strong consensus in the various computer forecasts that a low-pressure system will form along the front similar to the one that developed into the nor'easter last month. This system will play out very differently, however. While there is general agreement that a nor'easter-type system will form, there is little consens