More Rain, Flash Floods Possible In Hudson Valley

HUDSON VALLEY, NY — Now that the rain from the morning hours has left the Hudson Valley, we can likely expect more precipitation for the start of the workweek — and through the weekend.

That is evidenced by the National Weather Service issuing flash flood watches for the entire region.

For Dutchess and Ulster counties, the flash flood watch goes into effect at 2 p.m. Monday until 2 a.m. Tuesday.

In Orange, Putnam, Rockland and Westchester counties, the watch is in effect from 2 p.m. Tuesday until 10 a.m. Tuesday.

Scattered to numerous thunderstorms are expected to develop Monday afternoon in the vicinity of a warm front, the weather service said.

As the front sinks to the south Monday night it will continue to focus on thunderstorm activity and heavy rain potential.

Important to keep in mind is the fact that the rain will be falling in areas already affected by heavy rain and flash flooding from last week.

For Orange County and the lower Hudson Valley, rainfall amounts of 1 to 3 inches are likely, with localized amounts over 4 inches possible.

In Dutchess and Ulster counties, scattered thunderstorms this afternoon and evening could produce locally heavy rainfall, which may result in localized flash flooding especially in poor drainage and urban areas.

Here is the forecast from the National Weather Service for northern Westchester for the workweek:

• Monday Afternoon: A chance of showers, then showers and thunderstorms likely after 2pm. Some of the storms could produce gusty winds and heavy rain. Patchy fog before 2pm. Otherwise, cloudy, with a high near 80. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
• Monday Night: Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm after 1am. Some of the storms could produce gusty winds and heavy rain. Patchy fog after 1am. Otherwise, cloudy, with a low around 67. East wind 3 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
• Tuesday: A chance of showers, with thunderstorms also possible after 1pm. Patchy fog before 1pm. Otherwise, mostly cloudy, with a high near 79. East wind around 6 mph. Chance of precipitation is 40%.
• Tuesday Night: A chance of showers and thunderstorms. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 68. Southeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%.
• Wednesday: A slight chance of showers, then showers and thunderstorms likely after 9am. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 85. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
• Wednesday Night: Showers and thunderstorms likely, mainly before 9pm. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 68. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
• Thursday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 87.
• Thursday Night: Partly cloudy, with a low around 69.
• Friday: A 40 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 90.
• Friday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.

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