Station Name: GREAT SOUTH BAY AT WEST SAYVILLE NY
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet

Nearest Address:
198 Atlantic Ave
West Sayville, NY 11796
Suffolk County

GPS Coordinates: 40.72105556, -73.09125

Nearby Water Temperatures

Coastal Flood Warning issued February 21 at 2:44PM EST until February 23 at 6:00AM EST by NWS Upton NY

Effective: Sat February 21, 2026, 2:44 PM
Expires: Sun February 22, 2026, 5:00 PM

* WHAT...1 1/2 to 2 1/2 ft of inundation above ground level likely in vulnerable areas near the waterfront and shoreline. * WHERE...Northeast Suffolk and Southeast Suffolk Counties. * WHEN...From 10 PM Sunday to 6 AM EST Monday. * COASTAL FLOOD IMPACTS...Widespread moderate flooding of vulnerable areas near the waterfront and shoreline possible. 1 1/2 to 2 1/2 ft of inundation above ground level possible in low lying, vulnerable areas. This would 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 Gardiners Bay, particularly Orient Point and north shore of the south fork, will cause beach flooding and dune erosion during the time of high tide. This may also exacerbate splashover flooding of shorelines roads and properties behind protective dunes, structures and seawalls. Minor damage to shoreline structures possible. * 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 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.

Coastal Flood Warning issued February 21 at 2:44PM EST until February 23 at 5:00AM EST by NWS Upton NY

Effective: Sat February 21, 2026, 2:44 PM
Expires: Sun February 22, 2026, 5:00 PM

* WHAT...1 1/2 to 2 1/2 ft of inundation above ground level likely in vulnerable areas near the waterfront and shoreline. * WHERE...Bronx, Northwest Suffolk, Northern Queens and Northern Nassau Counties. * WHEN...From midnight Sunday night to 5 AM EST Monday. * COASTAL FLOOD IMPACTS...Widespread moderate flooding of vulnerable areas near the waterfront and shoreline likely. 1 1/2 to 2 1/2 ft of inundation above ground level possible in low lying, vulnerable areas. This would 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 structure. * SHORELINE IMPACTS...Breaking surf of 3 to 5 ft along north and northeast facing shorelines will cause beach flooding and dune erosion during the time of high tide. This may also exacerbate splashover flooding of shorelines roads and properties behind protective dunes, structures and seawalls. Minor damage to shoreline structures possible. * 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.

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

Coastal Flood Warning issued February 21 at 2:44PM EST until February 23 at 4:00AM EST by NWS Upton NY

Effective: Sat February 21, 2026, 2:44 PM
Expires: Sun February 22, 2026, 5:00 PM

* 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.

Blizzard Warning issued February 22 at 4:51AM EST until February 23 at 6:00PM EST by NWS Upton NY

Effective: Sun February 22, 2026, 4:51 AM
Expires: Sun February 22, 2026, 3:00 PM

* WHAT...Blizzard conditions expected. Total snow accumulations between 16 and 24 inches. Winds gusting as high as 60 mph. * WHERE...Portions of southern Connecticut and southeast New York. * WHEN...From 1 PM this afternoon to 6 PM EST Monday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening. The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility. The hazardous conditions will impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...Heaviest snow and strongest winds are expected tonight into Monday.

Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. Check local Department of Transportation information services for the latest road conditions. A Blizzard Warning means severe winter weather conditions are expected or occurring. Falling and blowing snow with strong winds are likely. This will lead to whiteout conditions, making travel extremely dangerous. Do not travel. If you must travel, have a winter survival kit with you. If you get stranded, stay in your vehicle.

Coastal Flood Warning issued February 21 at 2:44PM EST until February 23 at 2:00AM EST by NWS Upton NY

Effective: Sat February 21, 2026, 2:44 PM
Expires: Sun February 22, 2026, 5:00 PM

* WHAT...1 to 2 ft of inundation above ground level likely in vulnerable areas near the waterfront and shoreline. * WHERE...In New Jersey, Hudson, Eastern Bergen, Eastern Essex and Eastern Union Counties. In New York, New York (Manhattan), Richmond (Staten Island), Kings (Brooklyn) and Southern Queens Counties. * WHEN...From 10 PM Sunday to 2 AM EST Monday. * IMPACTS...Widespread minor to locally moderate coastal flooding is expected in the most vulnerable locations near the waterfront and shoreline. Expect around 1 to 2 ft of inundation above ground level in low lying, vulnerable areas. Some roads and low lying property including parking lots, parks, lawns and homes/businesses with basements near the waterfront will experience shallow flooding. * 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 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.