Live updates: Floods occur in Lower Hudson Valley as rainfall persists

Heavy rain at times overnight Tuesday in the Lower Hudson Valley could lead to flooding overnight with the leftover snow from this past weekend's snowstorm still on the ground.

Flood advisory issued

A flood advisory was issued by the National Weather Service Tuesday night, as the service said between a half-inch and an inch and a half of rain had already fallen by 8:32 p.m. The flood advisory was set to be in effect in Westchester, Rockland and Putnam until 11:45 p.m. as an additional 1 to 2 inches are expected.

"Urban and small stream flooding caused by excessive rainfall is expected," the weather service said.

It added to expect minor flooding in low-lying and poor drainage areas

According to the National Weather Service, impacted areas could include Yonkers, New Rochelle, White Plains, Port Chester, Ossining, Peekskill, Tarrytown, Mount Kisco, Dobbs Ferry, Nyack, Tappan and Scarsdale.

Ramapo police said that College Road and Bina Lane near Rockland Community College in Suffern are experiencing major flooding conditions as of 9 p.m. Tuesday night. Other minor roads in the county are also starting to experience dangerous flood conditions.

Here's what the current forecast says

The National Weather Service issued a flood watch for an area that includes Westchester, Rockland and Putnam from 6 p.m. Tuesday until 6 p.m. Wednesday.

The region is predicted to receive about 2.5 to 3.5 inches of torrential rain, which, mixed with the melting snow from Saturday's storm and already saturated ground, could spell trouble for flood-prone areas.

“In terms of the impact we’re expecting from this rainfall, we have to look at the pre-existing conditions that we already have," National Weather Service meteorologist Bryan Ramsey said Tuesday morning. “We have stream flows that are running about 75 to 90% of average right now and the soil moisture is 95% of average. So the rivers are running high and we've got snowpack. That's going to be a problem.”

Tuesday evening is forecast to continue with even more rain and a flood watch throughout the night starting at 6 p.m. Overnight, thunderstorms could start after 1 a.m. Wednesday.

Winds Tuesday night could average around 18 to 24 mph and could reach up to 41 mph. Temperatures are predicted to reach 54 degrees.

A coastal flood advisory is in effect for Southern Westchester from 7 p.m. Tuesday until noon Wednesday. According to the National Weather Service, runoff and the morning's high tide could result in major street and property flooding. In coastal communities, waves could break up on the shorelines with up to five feet of water.

A 30 percent chance of rain Wednesday morning should taper off by 1 p.m. The flood watch, however, will remain in effect until 6 p.m. Wednesday evening.

Thursday is expected to be sunny and mostly clear, but the National Weather Service said a chance of flooding and strong, damaging winds could come again by Friday night into Saturday.

This article originally appeared on Rockland/Westchester Journal News: Lower Hudson Valley weather: Floods begin as rainfall persists