Forecast: Pouring, Blowing, Maybe Flooding Tues.; Rain, Wed.; Snow(?) Thurs.

By David Gurliacci.

By Thursday, you may be wanting to load animals into an ark, two by two.

Rain, and plenty of it, along with high winds and some possible flooding are in the forecast for the next few days in Greenwich, according to the National Weather Service.

Coastal flooding and high winds may accompany heavy rain on Tuesday, with more rain continuing Wednesday, then possible snow on Thursday, which is likely to turn into rain, according to the National Weather Service.

The weather service issued a Coastal Flood Warning for minor to moderate flooding from 11 a.m. to 2 p.m. Tuesday in western Long Island Sound. Those along vulnerable shore roads could be affected, along with basements that are particularly vulnerable to flooding.

Tides could be 2.5 to 3.5 feet higher than normal at those times on Tuesday.

Heavy rain starting Tuesday morning and persisting through the day could cause flooding along rivers and streams, the National Weather Service said in a separate Flood Watch for the Metropolitan New York area, extending through southern Connecticut.

“Rain will be heavy at times, with 2 to 4 inches possible by the time the event ends Tuesday night,” the weather service said in the Flood Watch. “Localized higher amounts are possible. The main impact will be urban and poor drainage flooding.”

In addition to rain and flooding, expect heavier winds Tuesday in southern Connecticut and the New York metropolitan area, the weather service said in a Wind Advisory. Winds as high as 50 mph may be experienced along the coast, the weather service said.

Here’s the Westport-specific forecast from the National Weather Service as of 6:56 p.m. Monday:

• Monday night: A chance of drizzle, then light rain, mainly after 3am. Temperature rising to around 37 by 4am. Wind chill values between 25 and 30. Northeast wind 10 to 18 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
• Tuesday: Rain. The rain could be heavy at times. High near 43. Wind chill values between 25 and 35. Breezy, with a northeast wind 14 to 21 mph, with gusts as high as 41 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
• Tuesday night: Rain, mainly before midnight. Low around 36. Wind chill values between 30 and 35. North wind 10 to 16 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
• Wednesday: Showers likely. Cloudy, with a high near 41. Wind chill values between 30 and 35. North wind 10 to 13 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
• Wednesday night: A chance of rain showers before midnight, then a chance of rain and snow showers between midnight and 3am, then a chance of snow showers after 3am. Mostly cloudy, with a low around 35. Northwest wind around 10 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
• Thursday: A chance of snow showers before noon, then a chance of rain showers. Mostly cloudy, with a high near 41. Chance of precipitation is 30%.
• Thursday night: Mostly cloudy, with a low around 33.

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