Clouds are increasing this evening ahead of a northern branch disturbance (shortwave) moving east over the lower Great Lakes. It has produced a general Coating-4" to our west. There will be no big storm as I once thought was possible as that has now sped up and is missing off to our south and east this eve but there is enough energy with this shortwave to produce periods of light snow Sunday into Monday across Southern New England. Snow showers and periods of light snow will move in from west to east during Sunday. Before its arrival there could be some ocean effect snow showers as winds shift from west to northwest and to north that may affect parts of Cape Ann and Provincetown. Overall this is a minor event and looks to drop a coating to 2" with just a small chance at this time of a few locations seeing over 2"
This favors the south and east coasts. The storm simply is moving too quickly to produce more with no real moisture source and it being under a fast moving zonal jet stream. It will be all snow though and a bit of a fluff factor too so thats where we see a high end potential. It appears we remain cold for the foreseeable future and need to watch for another storm during the middle of next week. This would include the southern moist jet so the potential is there for a coastal storm but in the wake of the Sunday into Monday disturbance a large, cold dome of high pressure settles in and exactly how quick it releases or how long it decides to hold will make all the difference in the forecast for a potential snowstorm, a mix storm or even a suppressed storm missing out to sea. It is simply where we are at this point with that one and until we figure out how and where the upper levels will steer this thing there will be more questions than answers. I will surely be monitoring its every move and will keep you up to date on that.
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