DAYS 1-5 (DECEMBER 19-23)<\/p>\n\n\n\n
A true weather nut will be fascinated by the contrast across our area during the nighttime hours leading up to sunrise when I started writing this blog. While many areas were clear and calm with significant radiational cooling over a fresh snow cover, dropping temperatures into the teens and single digits, even to near zero in some locations, cloud cover (with a few snow flurries) and a breeze did their job holding temperatures up in the 20s to even around 30 along the South Shore of MA and especially Cape Cod, and even Cape Ann from Gloucester through Rockport, as the western edge of the northerly air flow behind our recent storm continued unimpeded by the low friction of the ocean water. As today goes on, our temperatures will find themselves much more uniform across the region by early afternoon in comparison to how they started out the day, but it will be a cold day, albeit with plenty of sunshine, which will start to fade later in the day as we get an increase in high and mid level cloudiness in advance of our next disturbance. Unfortunately this will interfere with the view of Jupiter & Saturn, which draw ever closer in the sky on the way to their Grand Conjunction in just 2 days. But the weather has the say, and these clouds are going to move in, and the disturbance causing them will bring slightly milder air but also the chance of some light rain & snow shower activity on Sunday. This will not be a big deal, with rain showers most likely in coastal areas and Cape Cod while interior sections see a better chance of snow showers, where a minor accumulation could result in few slick spots. This system moves out Sunday evening, but probably again not in time to see the planets, leaving us one more chance on the day-of Grand Conjunction, Monday, also the Winter Solstice. But will see see it even then? That’s a good question. I have been keeping an eye on the potential evolution of another storm to threaten us on Tuesday, although the leaning has been for this to stay mostly offshore. But the evolution of this system may be a little different than I’d envisioned earlier, with 2 piece of energy not getting close enough to join up and create a larger storm. If this is indeed to be the case, what we will see is the southern energy sliding offshore south and east of us Monday with some high cloudiness that could exit in time for evening twilight planet viewing, and cloudiness from the northern piece of energy, while approaching via the Great Lakes, still holding off far enough to the west so as not to bother the view. Hoping this is how it turns out! Regardless, that northern energy is expected to dive across the region Tuesday with cloudiness and some snow shower activity (perhaps rain showers Cape Cod with more marginal temperatures), but not a big storm. Behind that comes high pressure and dry weather for Wednesday.<\/p>\n\n\n\n
TODAY: Mostly sunny. Highs 30-37. Wind W 5-15 MPH.<\/p>\n\n\n\n
TONIGHT: Variably cloudy. Lows 20-27. Wind SW up to 10 MPH.<\/p>\n\n\n\n
SUNDAY: Mostly cloudy. Periods of light snow\/mix\/rain, frozen precipitation most likely Boston north and west, with rain more likely to the southeast. Highs 33-40. Wind variable 5-15 MPH.<\/p>\n\n\n\n
SUNDAY NIGHT: Mostly cloudy early, then clearing. Lows 21-28. Wind W 5-15 MPH.<\/p>\n\n\n\n
MONDAY: Early and late sun, a period of cloudiness between. Highs 35-42. Wind W 5-15 MPH.<\/p>\n\n\n\n
MONDAY NIGHT: Clouds return. Lows 23-30. Wind variable 5-15 MPH.<\/p>\n\n\n\n
TUESDAY: Mostly cloudy. Snow showers likely, except rain or snow showers South Coast. Highs 34-41. Wind NW 5-15 MPH, higher gusts.<\/p>\n\n\n\n
TUESDAY NIGHT: Clearing. Lows 15-22. Wind NW 5-15 MPH.<\/p>\n\n\n\n
WEDNESDAY: Mostly sunny. Highs 31-38. Wind W 5-15 MPH.<\/p>\n\n\n\n
DAYS 6-10 (DECEMBER 24-28)<\/p>\n\n\n\n
High pressure shifts offshore with dry but a little milder for December 24. Low pressure attempts a track northwest of New England for early December 25 but how much warm air gets into the region is questionable. While guidance will show a strong surge of southerly air, warmth, and a good slug of rain, I have my doubts this is exactly how it plays out. While we may eventually get into the “warm sector”, it will likely be difficult at first and also modified by snow cover, which will still very much be around in most of the region, and the rainfall along the frontal boundary that sweeps through from the west may be a much narrower area than depicted by models at this time. Cold air likely returns rather quickly by later December 25 hanging around for the remainder of this period as high pressure builds across the Great Lakes and into eastern Canada.<\/p>\n\n\n\n
DAYS 11-15 (DECEMBER 29 \u2013 JANUARY 2)<\/p>\n\n\n\n
High pressure eastern Canada, low pressure approaching from west may bring a wintry weather event to start this period followed by a brief shot of cold, then moderation with more tranquil weather as 2021 arrives. This is a low confidence forecast at this time.<\/p>\n","protected":false},"excerpt":{"rendered":"
DAYS 1-5 (DECEMBER 19-23) A true weather nut will be fascinated by the contrast across our area during the nighttime hours leading up to sunrise when I started writing this blog. While many areas were clear and calm with significant radiational cooling over a fresh snow cover, dropping temperatures into the teens and single digits, … Continue reading Saturday December 19 2020 Forecast (8:20AM)<\/span>