http://edition.cnn.com/2017/03/14/us/northeast-snowstorm-snapshots/index.html
When I visited Washington and New York, in other words, 'North East Corridor', I saw snow fall of about 1 or 2 centimetres.
Despite its latitude, there seems to be little snow.
So, once the storm like 'December 2010 North America Blizzard(https://en.m.wikipedia.org/wiki/December_2010_North_American_blizzard) hit the region, it paralizes cities' activities.
But, it's just rare cases. It's not cost-effective to prepare for heavy blizzard with full systems.
However, it will not be bad for New York Subway to buy russell locomotive.