How a Pattern can Potentially be too Active for Major Snows
The ridge on the west coast dictates that the next series of disturbances approaching the east coast will be able to amplify into major storms, however, what makes this a very high stakes pattern is that there is not much space between each one. Thus if anything is "off" with respect to a given system's ability to produce a major snowfall on the east coast, then it may have a ripple effect in that it may only serve to interfere with subsequent storm threats, thereafter.
The first such system is an amplifying ocean storm that will make its closes pass to the region on Friday.
The current consensus strongly favors the western ridge not being quite amplified enough for this system to have a major impact on the region. This is in large part due to a northern stream disturbance compressing the northern portion of the ridge just enough to preclude a major strike from this system across region, as noted in the annotation above. However, a less likely scenario is that the ridge manages to protrude further into Alaska downstream from this disturbance.
This would allow the system to amplify slightly more and since its exit would be blocked by a western atlantic ridge to the north, it could retrograde close enough to impact at least the eastern portion of southern New England