Active AlertsOceanside, NY

What: 1 1/2 to 2 1/2 ft, locally 3 ft, of inundation above ground level likely in vulnerable areas near the waterfront and shoreline.
Where: Southwest Suffolk and Southern Nassau Counties.
When: From 10 PM Sunday to 4 AM EST Monday.
Coastal Flood Impacts: Widespread moderate to localized major flooding of vulnerable areas near the waterfront and shoreline likely. Expect 1 1/2 to 2 1/2 ft, locally 3 ft of inundation above ground level possible in low lying, vulnerable areas. This will result in numerous road closures and cause widespread flooding of low lying property including parking lots, parks, lawns and homes/businesses with basements near the waterfront. 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. Ice cover in the bays and harbors could exacerbate flooding and cause damage to northeast to east facing shoreline structures.
Shoreline Impacts: Breaking surf of 5 to 10 ft along the ocean front will cause widespread beach flooding and erosion during the time of high tide. Areas of dune erosion are likely, with localized washovers possible where dunes are compromised.
Additional Details: This water level forecast will be highly dependent on timing of windshift from northeast to north storm force winds with respect to the time of high tide, and will be refined over the next 24 hours. Ice cover in the bays and harbors could exacerbate flooding and cause damage to north to northeast facing shoreline structures. Additional minor to locally moderate coastal flooding possible with the Monday afternoon high tide.

Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth.