National Weather Service issues flood advisory for Long Island

Wet weather is expected to continue to be the norm for Long Island at least until Wednesday night.

Along with the rain, the National Weather Service on Monday issued a coastal flood advisory for Tuesday for the South Shore in Nassau County and western Suffolk County, effective from 2 p.m. through 8 p.m. The service had issued a similar advisory for Monday.

"Large breaking waves and elevated water levels along the oceanfront will result in significant beach erosion and flooding," according to the weather service.

One to two feet of inundation above ground level is possible in vulnerable areas near the waterfront and shoreline during the afternoon and evening high tidal cycles Tuesday, and up to a half a foot of flooding is possible during the morning high tide Tuesday.

Temperatures on Monday night are expected to drop to about 48 degrees.

Tuesday, showers are likely, while a northeast wind will blow at about 20 mph, with gusts as high as 34 mph, according to the weather service. The high temperature for the day in Islip is expected to be about 57 degrees. The chance of precipitation was set at 80%.

Rain is also forecast for Tuesday night when the low temperature is predicted to be around 54 degrees.

"Widespread minor to locally moderate flooding of vulnerable areas is expected near the waterfront and shoreline, including roads, parking lots, parks, lawns, and homes and businesses with basements near the waterfront," the flood advisory reads, adding: "Several to numerous road closures are likely, and vehicles parked in vulnerable areas near the waterfront will likely become flooded."

Flooding will also extend inland from the waterfront along tidal rivers and bays, according to the advisory.

A low-pressure system off the mid-Atlantic coast following in the footsteps of Hurricane Ian is causing the potential flooding conditions. As a result, the weather service said we can expect rain — and strong, gusting winds — through at least Wednesday.

Wednesday there is a 60% chance of showers.

Finally, sunny skies are expected to return to Long Island on Thursday and Friday.

A daytime high temperature of about 65 degrees is in the forecast for Wednesday while the thermometer is expected to rise to about 72 degrees on both Thursday and Friday.

In addition to all the coastal flooding potential, the weather service has issued a gale warning for all Atlantic Ocean waters from Sandy Hook, New Jersey, to Montauk Point out to 20 nautical miles — strong winds that will cause hazardous seas that could lead to damage or even capsize some vessels.

There is a small craft warning in effect for all South Shore bays and Long Island Sound through 6 p.m. Tuesday.