H5 is on pivotal. No vorticity though.
you can get the vort and all parameters here
https://rapidrefresh.noaa.gov/hrrr/HRRR/Welcome.cgi?dsKey=hrrr_ncep_jet
I’ll add that the midpoint of the BOS snow season is Feb 1. And I’m fully aware that if the forecast looks bleak around that time that ditty and I try our hardest to cancel the rest of winter since we hate snow with higher sun angle.