Yeah there's multiple ways to do it, but the most likely is just getting stuck under some bands. It will help if we can advect a MAUL aloft like Tip and I were discussing earlier....as H5 deepens more and more rapidly, that will help. We want it to be deepening very rapidly as it passes just SE of LI and then south of the islands.
The other way is if you can get a bit of a stall....even for 4-6 hours as it gets totally stacked. That seems to be happening a bit to our SW making coastal NJ the beneficiary, but these things can change a bit...it's been slowly migrating northeast.