Originally Posted by
yellow77
CO's weather forecasts actually appear to use that word (fairly regularly) to refer to the entire BOS-WAS corridor.
So is the reasoning that once WX hits a good portion of the megalopolis (or a single very significant city, al la NYC or DC), it will cascade travel delays throughout?
Or is there warnings issued as NYC/DC-metro/etc when it affects just those areas, and megalopolis is only used with issues that affect a larger portion of the region than just a single major city?