Also was pretty slow moving. I do think there are comparable setups from 30+ years ago that didn't produce these kinds of totals. Warmer ocean temps could be assisting it.
18z NAM came south with the low track, but the mixing line is further north and the Deathband almost runs across the PA/NY state line..
Believable considering there's a lot more precip near Pittsburgh then most models had.
Western shift is due to the following 3 things
1. The troff keeps trending, slower with higher heights ahead of it.
2. #1 is really bad when there is a high moving offshore.
3. The primary in the OV keeps trending stronger.
Last second trends always make an accurate forecast practically impossible. Now it's up to mets to gamble and extrapolate the models even further NW cause the models are playing catch up and won't quite make it.
If CMC is correct this has all the makings of a bust From DC to PHI and Burbs. NYC will get a good thump but even there they will have sleet and a dryslot and struggle to make the low end of whatever ridiculously high range the NWS gives.. This looks exactly like most Non-megalopolis storms. Death band State College to Scranton to Albany to Concord.