We’ve been tracking the same storm since Friday over the Southern Plains, but now it has made it’s way to the Northeast. The combination of a weakening upper-level low over the Appalachians, which has been the main driving-factor of this storm up to now, in addition to a weak coastal storm that has formed will lead to heavy rain for some in the Northeast Wednesday.
During the morning Wednesday, a light to moderate rain will be falling across eastern Pennsylvania, northern New Jersey, eastern New York, and southern and central New England. Further south, spotty showers will be found in the Mid-Atlantic. Then in the afternoon, it will remain wet. A line of rain on the backside of the upper-level low will bring in a final round of rain to the interior Northeast, affecting the areas surrounding Lake Erie during the midday time period, then eventually reaching central Pennsylvania and western New York by the evening. Meanwhile to the east, rain will continue across much of the rest of New York and New England. A few showers will also linger in the Mid-Atlantic. The heaviest of rain will be found in central New York during this time period.
Then overnight Wednesday, the rain will clear out of the I-95 corridor, but there will be rounds of rain that continue across northern New England and northern and western New York. Also as the direct tap of tropical moisture shifts eastward from being directed toward the Northeast coast, there may be several hours of heavier rain that flow into southeastern Massachusetts and possibly Boston. This could produce over two inches of rainfall from this storm.
By Thursday, much of the weather from this storm will have cleared due to its movement into Canada. Rain will continue through much of the day, however, in Maine and along the Canadian border. The remainder of the Northeast will be dry with clearing skies due to the intrusion of dry air.