Exceptionally warm air covered most of the East yesterday. Temperatures reached the 60s as far north as Plymouth, Mass. North of there, nothing doing in the warm air department. Boston stayed in the 30s, and farther north, a dangerous and damaging ice storm continued. Today, a cold front slowly heading toward the coast is preceded and followed by clouds and rain. From the Great Lakes to the Appalachians, the rain has been followed by snow showers. East of the mountains, the rain will end before it gets cold enough for snow. This video has more.
Although it will not be uniformly cold every day from tomorrow through the first days of 2014, it will be generally cold across the Great Lakes and Northeast. A weak disturbance embedded in the flow will move through the Middle Atlantic states tomorrow afternoon and evening, and this system can cause some snow showers. This NAM model map shows one idea of where there could be measurable precipitation between 1 p.m. and 7 p.m. ET tomorrow. Areas surrounding the shaded regions could also have some flurries.
However, rainfall is increasing south of New England, and southerly flow aloft should bring rain to Providence, Boston and other parts of New England.
Early this morning, the most concentrated rain was falling in a band from Maryland to southern Michigan.
With a high pressure area over Maine, a low pressure area over western Indiana and an upper-air storm spinning over the western Great Lakes, the stage is set for wet weather in the Middle and North Atlantic states.
This map is a rainfall forecast from the NWS Middle Atlantic River Forecast Center located in State College, PA.
The upper-air flow forecast for this evening shows the trough that helps to support rainfall ahead of the cold front.
After reaching the 80s today from NYC to Boston, it might not be that warm again through much of next week.