A tricky storm Tuesday

The first in a line of storms will come up the coast, and the first is a hit in Southern New England. Precip will start Tuesday midday and continue through Wednesday morning. I am leaning towards a slushy inch or two of snow in the Boston to Providence corridor before the changeover, but more accumulation to the west. Then, it may flip back and forth between rain, sleet and snow Tuesday night and Wednesday morning in Boston, while it stays mainly snow NW of rte. 495. Then, we will have a break Wednesday afternoon through Thursday before we watch the next storm coming up the coast. 

Boston, MA forecast: 

Tonight: Clear, lows in the 20's.

Monday: Sunny with sea breeze. Highs near 40 at logan 43 in JP, and 48 west of 128. 

Monday night: Turning cloudy with lows in the mid to upper 20's. 

Tuesday Storm Timeline (some revisions likely):  

11 AM: Snow arrives in Boston 

2 PM: Snow changes to rain in Boston, while it stays snow NW of 128. 

6 PM: Changes to rain briefly NW of 128, still snow NW of 495. 

8 PM: Rain/Snow line comes back to the coast. Not a full change back to snow in Boston. 

9 PM-10AM Wednesday: Rain mixing with snow in Boston, and Snow to the NW and rain to the south. 

Noon and beyond: Lingering light and snow and rain showers. 

Amounts (revisions are likely also): 

6-8+: North and west of 495. A foot or more is possible around Keene, NH.

3-6: North and west of route 128. Including areas like Lincoln, Natick, Topsfield, Reading and Wellslely. 

1-3: A line from the immediate Boston area to Providence, RI. Including Medford, Westwood, Walpole, Dedham, Medway. An inch or two in JP. 

South of 95: Mainly rain.