Tough Call

Temps have risen to around 40 this afternoon as the storm approaches. However, there is a strong cold front just to the north, and temps in southern Maine are in the low 20's. Once the front makes it to MA at around 4 PM, temps will start dropping. The rain will start in Boston at around 5 PM, and continue heavy at times until midnight. Some snow may mix in NW of Route 495. Then the forecast becomes tricky, because 1 or 2 degrees will mean the difference between wet snow or a cold rain. At this point I think the snow line will collapse quickly towards the coast after midnight. Then, the wet snow will fall heavily in the Boston area from around 2 AM until 10 AM Monday morning; however, the rain/snow line will never make it to the Cape. It will be windy as well, with gusts over 40 MPH Monday morning.

Timeline for Sunday night and Monday: Temps in the low to mid 30's.

5 PM: The rain arrives. some wet snowflakes may mix in.

11 PM: Rain changes to snow NW of Route 128.

2 AM: Changes to all snow in Boston. Becoming windy.

4 AM: Changes to snow on south shore.

5 Am- 10 Am: Snow, heavy at times. North winds gusting over 40 MPH.

After 10 AM: Scattered snow and rain showers.


Amounts: Could be less if temps don't drop as fast as expected.

A slushy inch or 2: Southern sections of the south shore a line From Plymouth to RI.

2-4: Just South and southwest of 128. A line from Hull to just north of Providence. Areas like Norwood, Sharon, Walpole.

4-8: A line from From Cape Ann through the immediate Boston area to Framingham to south of Worcester. About 6 inches in JP. Including areas like Medford, Lincoln, Sudbury, Beverly, Topsfield.

8-10: A line from Lowell to Worcester. North and West of 495. Including areas like: Stow, Littleton, Fitchburg.