The primary impacts of the nor'easter on Massachusetts will be felt along the coast, Cape Cod, and the Islands, where wind gusts may reach up to 40 mph. Rough seas are expected to persist throughout the week, posing risks to marine activities. Rainfall may affect the Cape and Islands on Thursday, but it is unlikely to extend further north. Temperatures will vary significantly, and colder conditions are anticipated heading into the weekend. Residents in affected areas should remain cautious of strong winds and potential coastal disruptions.