I'm continuing to use radar imagery and your reports to "Now Cast" this storm.
Currently, a band of heavy to very heavy snow continues to sit over areas near and east of I-190 and near and east of I-395. Snow rates of 2 to 3 inches per hour are being reported in this band. This is the part of the forecast that's "easy" because it's going exactly the way I thought it would. This means that areas along and east of I-190 and along and east of I-395 are likely to receive at least an additional 12 to 15 inches of snow.
The part of the forecast that continues to be extremely difficult is trying to figure out how far west that heavy snow band will push. Right now, the western edge of the band of heavy snow extends into Rutland, Spencer and Sturbridge. In fact, here in Sturbridge, I have moderate to heavy snow falling with a significant amount of blowing snow occurring. I've also just measured about 5 inches of snow accumulation so far from this storm.
It's possible that the western extent of the heavy snow band may push as far west as Barre and the Brookfields over the next couple of hours before it begins to pivot back to the east.
I'll be honest, this is one area that I'm likely to bust with this forecast as additional snow totals may end up being 3 to 5 more inches near Barre and the Brookfields to perhaps 5 to 7 more inches of snow across Rutland, Spencer and Sturbridge.
As for Western Mass, this is the other area I will very likely bust hard in my forecast. Light snow is currently falling across all of Western Mass, although, it appears that the snow may have picked up a little in intensity around Springfield, Ludlow, Wilbraham and Belchertown.
Light snow will likely continue across Western Mass this afternoon into early this evening with additional snow amounts of 1 to 3 inches along and west of I-91 and additional snow amounts of 3 to 4 inches or so east of I-91.
All snow will end across Western Mass between 6 pm and 8 pm and across Central Mass by about 9 to 11 pm this evening.