A storm center strengthening as it moves from the Eastern New England coast toward the mouth of the St. Lawrence River in Canada is sweeping the steadiest of the rain with it, leaving behind a few pop-up showers between emerging breaks of sun for many, though more showers of rain and snow will be found in the North Country. We’ll all see an increasing wind as new air, promising a more widespread frost chance than we’ve seen so far this season, moves in. Danielle Noyes has the details.
As a dynamic low-pressure system pushes eastward across the Northeast, a combination of rain, snow, and colder air will settle in. A potent upper-level trough will result in widespread precipitation from the Great Lakes to the Northeast, where rain is expected to change over to wet snow, especially in higher elevations such as the Adirondacks, Green, and White Mountains. Accumulations are anticipated in these areas, with up to 6 inches in the highest peaks by midweek.
Meanwhile, a marginal risk of severe thunderstorms exists today across parts of the Central Appalachians, with strong wind gusts, hail, and localized heavy rain posing minimal tornado risks. Down in Florida, showers and thunderstorms persist, especially along the southeastern coastline, where heavy rain may lead to localized flash flooding. Another low-pressure system will affect the Pacific Northwest later today, bringing light to moderate rainfall across Washington, Oregon, and Northern California.
Looking ahead to Tuesday, cold air will continue to plunge into the eastern United States, accompanied by lake-effect rain and snow showers downwind of the Great Lakes. In contrast, much of the Western U.S. remains dry and calm, though temperatures will gradually cool midweek as an upper-level trough approaches the region.
Monday afternoon will see temperatures continue to drop, with gusty northwest winds developing, making it feel even colder. Coastal and urban areas, including Boston and New York City, can expect rain showers to taper off by late morning, giving way to clearing skies, but temperatures will remain on the cool side with highs only in the upper 40s to low 50s across much of the region.
Looking toward midweek, colder-than-normal temperatures will persist, with lake-effect and upslope snow showers continuing across northern and western parts of the region, keeping travel potentially hazardous in higher elevations. By Thursday, high pressure will begin to build in, leading to drier conditions and moderating temperatures.
