Cooler days ahead? Major shift coming to the Northeast A weak push of cool air will break the heat surge in the Northeast this weekend and will be followed by a much bigger outbreak of cool air next week from the Great Lakes to New England and the mid-Atlantic, AccuWeather meteorologists say. A massive bulge in the jet stream allowed some cool air to seep southward this weekend in New England. #NortheastCooldown #JetStreamShift #HumidityBreak