I’ve been thinking that the Tuesday snow from the ‘secondary low’ wouldn’t amount to much (1-3inches) but the latest NAM and GFS data is available and both models crank out 0.50 and 0.54 inches respectively, as the QPF.

That ordinarily translates to about 5-7 inches of snow, but the models have it coming is dribs and drabs over a 30 hour period from late Monday night into Tuesday night and I’ve seen those sort of things over-done with other storms.

4:45pm: Based on this afternoon’s NAM, I’m still thinking 1-3 inches total by Tuesday eve, despite higher model QPF values.

That said, the words to keep in mind are “low confidence” and “notoriously unpredictable” when it comes to a secondary low precipitation QPF.   Not only is the QPF unreliable, but it is especially so for any particular location.

So, according to the latest,  the snow starts after midnight early Tuesday morning, we wake up with about 2-3 inches of snow Tuesday and light snow continues throughout the day into the evening.   The temperatures support snow instead of rain or a mix.    I’ll update again this evening.

An update on the potential snow for Monday through Wednesday.

The models have come together in having the southeast coastal storm pass east of us, missing us early Monday.

The secondary low expected to develop late Monday into Tuesday looks weak and diffuse.  Exact location of development and the amount of precipitation is uncertain, but looks to be light, at most, 1-3 inches, according to the NAM. The GFS cranks out much more, with a QPF of 0.48 inches water, but I think it’s overdone.