Update (8 p.m.): A coastal flood warning has now been issued for our area as a nor’easter descends over lower New York. The storm is expected to last from Monday through Tuesday.

A flood warning means that flooding is expected or occurring.

According to Islip Town officials, the storm will likely be most severe Monday afternoon and evening. Downed trees and power lines are expected, along with flood conditions.

Original story: The National Weather Service has issued a Coastal Flood Watch for our area.

Residents are being told to expect high winds and heavy rainfall starting Sunday night into Monday evening.

Governor Andrew Cuomo also issued a statement today, urging New Yorkers, especially those in New York City and Long Island to prepare not only for heavy rain, but snow, sleet and freezing rain.

Widespread dune erosion and localized wash overs are possible along the Atlantic Ocean coast, according to the governor’s office.

Sea levels may be between 16 and 22 feet on the ocean and 6 to 12 feet on the sound.

“As this storm could cause power outages across downstate and flooding for communities near the coastline, I am directing all relevant state agencies to be on alert and ready to respond to whatever Mother Nature throws our way,” reads Cuomo’s statment. “We will be closely monitoring storm conditions and deploying resources and equipment as necessary. I encourage all New Yorkers in these areas to plan ahead, avoid unnecessary travel, and above all else – stay safe.”

Wind speeds of 30 to 40 mph are likely, and 60 mph gusts are possible. Such winds could lead to downed trees and power lines, so residents should be prepared for power outages.

The high winds, coupled with tidal surges, could create flood conditions in our coastal communities. 

Islip Town officials say they will also be monitoring the storm as it progresses.

FORECAST

Source: National Weather Service

Monday Afternoon
Rain likely. Cloudy, with a high near 41. Wind chill values between 25 and 30. Windy, with an east wind around 36 mph, with gusts as high as 55 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Monday night
Rain. The rain could be heavy at times. Low around 40. Wind chill values between 25 and 35. Windy, with a northeast wind 32 to 37 mph decreasing to 22 to 27 mph after midnight. Winds could gust as high as 55 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Tuesday
Rain likely, mainly before 3pm. Cloudy, with a high near 43. Breezy, with a northeast wind 16 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
A 30 percent chance of rain, mainly before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 35. Wind chill values between 30 and 35. Northwest wind 11 to 17 mph.
Wednesday
Mostly sunny, with a high near 47. Southwest wind 9 to 11 mph.
Wednesday Night
Partly cloudy, with a steady temperature around 44.