Synopsis:

High pressure continues to build in this evening and Friday, keeping the region dry. Over the next 48 hours, a shortwave trough will amplify the main trough, sending the region into a colder, persistent pattern. Upper levels of the atmosphere remain very cold and will keep the Northeast cold over the next several days.  As the trough approaches the coast Friday night and Saturday and the jet increases, an area of low pressure will begin to organize along the Mid-Atlantic Coast Friday night. It should track to the south of Long Island on Saturday, but eat of the 40N/70W benchmark. With cold air in place, we can expect some snow, especially along the frontal boundary. Another area of low pressure is expected to impact the region on Tuesday into Wednesday, followed by high pressure for the end of next week.