The National Weather Service has issued a Flood Watch for the entire region (excluding Greene & Columbia counties). Rainfall totals of 2 to 4 inches are possible, with some localized totals up to 5 inches possible.
You can see on the Futurecast images, that the next 18 hours will feature plenty of rainfall across the area. The SW flow will usher plenty of moisture up into the Hudson Valley over the next 24 hours. Areas not currently seeing rain, will begin to see the rain move in before sunset. Periods of light to moderate rain will then continue through the night tonight, and into Tuesday afternoon. Rain could fall heavy at times Monday night and Tuesday morning… and for this reason the Flood Watches have been issued.
It may seem counter-intuitive to have a Flood Watch in effect with the Hudson Valley in a drought… but the extremely dry ground may struggle to absorb the rainfall when it falls heavily… so runoff and flooding is a concern for the flood prone areas. More updates as needed tonight.