Yep, BUFKIT is definitely your best friend when it comes to looking at the DGZ and trying to find funky dry layers. That BDL cross-section is an excellent signature for a short period of heavy high ratio snow. Of course BUFKIT and coolwx is limited to the American models. You can get some coarse SKEW-Ts for the globals but I don't know if there is anywhere to get cross-sections. Checking the cross-sections is good practice for any snow forecast. Sometimes you can find some flags.