DAYS 1-5 (APRIL 2-6)
Apologies for the very late update. Today, we’ve seen the expected development of diurnal clouds due to sunshine acting on air with moisture lingering from yesterday’s rainfall and rising into cold air aloft. The atmosphere is fairly stable so these clouds are not too vertical, but rather flat and spread out, leading to a more general coverage versus scattered individual cells that can produce heavier precipitation. However they can grow thick enough to produce a few flakes of snow mainly northwest of Boston, but any flurries that occur will be insignificant. And speaking of snow, some of you may have seen snow showers late last evening as the cold air became established across there region. If you didn’t see them, or were missed, you can trust me that they were there. And that cold air is established this afternoon with temperatures in the 40s and a gusty northwesterly breeze. But we’ll see some improvement soon, tomorrow in fact, as we have plenty of sun and temperature moderation into the 50s. I’d like to say this trend is going to continue for Sunday (Easter, for those celebrating) but I can’t. A disturbance will be coming across the region, delivering clouds Saturday night into Sunday, before they decrease again, and there may be a passing rain or snow shower Easter morning. All the while, as previously mentioned, the atmosphere is developing a typical spring blocking pattern, and a large cut off low pressure area will be drifting westward through the Canadian Maritimes, close enough to put us into a northeasterly air flow early next week, keeping temperatures from warming back up too much. Most of the precipitation from that low will fair to reach our area, but some of its cloudiness will make it into the region.
REMAINDER OF AFTERNOON: Lots of clouds – most snow South Shore & South Coast of MA, most clouds NW of Boston where a few snow flurries are possible. Highs 40-47. Wind NW 10-20 MPH.
TONIGHT: Gradual clearing. Lows 27-34. Wind W 5-15 MPH.
SATURDAY: Mostly sunny. Highs 53-60. Wind W 5-15 MPH.
SATURDAY NIGHT: Partly cloudy evening. Mostly cloudy with a passing shower of rain/mix/snow possible overnight. Lows 33-40. Wind NW 5-15 MPH.
SUNDAY: Mostly cloudy with a passing shower of rain/mix/snow possible morning. Partly sunny afternoon. Highs 48-55. Wind NW 10-20 MPH.
SUNDAY NIGHT: Variably cloudy. Lows 33-40. Wind N 10-20 MPH.
MONDAY: Mostly cloudy. A rain or snow shower possible. Highs 47-54. Wind N 10-20 MPH.
MONDAY NIGHT: Variably cloudy. Lows 35-42. Wind N 5-15 MPH.
TUESDAY: Partly sunny. Highs 48-55. Wind N 5-15 MPH.
DAYS 6-10 (APRIL 7-11)
Large scale blocking. Low pressure to the east drifts away but high pressure will be in eastern Canada and winds will often be northeast to east in our area. Eventually another low will approach from the southwest. While the first few days of the period are likely to be mainly dry, the precipitation risk will increase later in the period.
DAYS 11-15 (APRIL 12-16)
Overall blocking pattern continues with high pressure to the north of the region and the tendency for low pressure to be to the south. Leaning toward the drier side overall, but can’t rule out some periods of precipitation from low pressure to the south or coastal influence from low level moisture.