I agree with rabbit and others about previous storms this year that went unclassified as a TD, but what can we all say here, our opinions and observations here have truth and merit, but the bottom line is the "experts" at the NHC make the calls on storm classifications with all the information made available to them and with their experience., that's why they get paid the "big bucks".
Anyway, here's a good visible loop of the Tropical Nor'easter or 98L or frontal storm, or what ever you want to call it.
http://www.ssd.noaa.gov/PS/TROP/DATA/RT/float-vis-loop.html