Arctic boundary now clearly visible on radar cutting across Somerset, Essex, Union, Bergen, and NYC, about a 20-25F difference in a matter of 10 miles or so
I would be surprised now with colder/south trends if anyone (outside maybe coastal SI/LI) will not be above mid/upper 30s during storm, while 95 N&W probably a large amount of frozen/freezing.
Got to use the Kuchera formula, does a great job of separating ice, sleet, and snow, that has about 1-3"/2-4" of snow for most of metro along with much sleet, some ice
wherever the boundary sets up, just to its north will get a lot of frozen/snow, right now GFS is mostly north with maybe 1-4” with a little late development, CMC, EURO, UKIE range from near us to well south...