A forecast revision is necessary since the heavier rain is not going to materialize in most areas this afternoon. I apologize for the morning prediction when I had anticipated that a large area of rain and thunderstorms over eastern PA and NJ would track northeastward into the region yielding some healthy rain of 0.5 to 1″ or more. That trajectory of that batch changed to a more easterly path then northeast and it is not merging with another area of heavier rain which moved up across northwestern MA into parts of northern New England. Consequently, there will be nothing more than some spritzes, sprinkles and light showers over much of the area this afternoon. There could be a few isolated heavier showers ad possible thunder but the main area of heavier rain to the south will skim across extreme southern CT, southern RI to Cape Cod especially over the islands. It will be humid and temperatures will rise a few degrees into the middle to possibly upper 70s.
The rest of the morning forecast/blog remains unchanged:
Tomorrow will be considered a transition from today’s touch of rain and the delightful weather that will resume on Thursday and linger for many days. While there will be spells of sunshine between passing patches of puffy clouds on your Wednesday, the westerly wind will be gusty at 15-30 mph. Temperatures will peak out in the middle 70s but it will actually feel a bit cooler with the much drier air and the brisk wind blowing. There could be a few spotty showers over the northern mountains. With a sprawling zone of high pressure over the upper Midwest and Great Lakes pressing eastward, the weather is shaping up to be stellar. The ridge of high pressure is predicted to become entrenched over the Northeast into the Maritimes thereby blocking any potential intruders from the south and the north. With that said, a slight turning of the steering currents could escort some high cloudiness from the Mid-Atlantic into our region from time to time but I feel that the most likely time for that to happen is later in the weekend as an impulse is transported just off the coast but most of its rain should skim just south of New England. As it exits, sunnier conditions should return next Monday. Long range guidance is revealing the high pressure system to remain locked in place well into next week although it does begin to settle south by midweek. With time, it will become gradually warmer and somewhat more humid next week as daily sea breezes keep the coast a bit cooler overall followed by a southwesterly wind late in the week. Daytime highs will gradually ramp up a degree or two for each succeeding day going forward with beach air temperatures a bit lower by a half-dozen degrees or more through that period. Speculatively, another mass of dry air could be surging out of Canada to create more refreshing air in the Northeast on the last full weekend of August.
Now I offer you some good news to make you smile today. The chance of any severe thunderstorms around most of the Boston area today is slim to none and it looks like there will be no additional boomer threats for the next 1-2 weeks. Additionally, the tropics continue quiet due in part to the dry air over much of the far eastern Atlantic and also in part to dusty air emanating from Africa. As a result, we don’t have to be talking and dealing with tropical cyclones for the next 1-2 weeks at least. Tropical cyclone activity generally peaks out on September 10. Peaceful weather is our friend.