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NY weather update: The current coastal flood advisory for Westchester County is canceled

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  Published in Travel and Leisure on Wednesday, September 10th 2025 at 17:44 GMT by Staten Island Advance
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Westchester County Faces Extended Coastal Flood Advisory Through Wednesday Evening

Residents are urged to stay alert as a low‑pressure system drifts across the Atlantic, bringing high tides and a threat of flooding to the New York metropolitan area’s western suburbs.

The National Weather Service (NWS) office in New York City has issued a Coastal Flood Advisory that will remain in effect for Westchester County until early Wednesday evening. The alert, posted on September 6, 2025, warns that the county’s low‑lying coastal neighborhoods could experience flooding as high tides combine with a storm surge driven by a developing low‑pressure system moving off the eastern seaboard.

What the Advisory Means

A Coastal Flood Advisory is the NWS’s way of signaling that flood risk exists but that flooding is not yet imminent. The advisory indicates that the water level is expected to rise to a height that could cause flooding of roads, properties, or infrastructure. While it is not a warning—meaning no catastrophic flooding is forecast—residents should be prepared for the possibility that water may rise enough to impede travel, wash out street edges, or submerge low‑lying areas.

In Westchester County, the advisory covers a stretch of the Hudson River, the Long Island Sound, and all the county’s coastal zones, including Yonkers, New Rochelle, Tarrytown, and the boroughs of Mamaroneck and Port Chester. According to the NWS, the potential flood heights range from a modest 0.2 to 0.5 feet above normal tide levels in most locations, with localized pockets that could see up to one foot of water, particularly in the waterfront neighborhoods of Manhattan Beach and in the bay areas near the Bronx‑Westchester border.

The Weather System at Work

The storm system responsible for the advisory is a classic Atlantic low‑pressure trough that is gaining strength over the western Atlantic Ocean. As it progresses eastward, it will bring a combination of heavy rainfall—up to an inch in the most saturated pockets—and winds from the south‑west. The National Weather Service predicts that the highest tides will fall in the window from Monday morning through Wednesday afternoon, aligning with the expected peak of the storm surge.

Meteorologists note that the timing is crucial. “The surge peaks when the tide is at its highest, and the combination can cause water to back up onto roads,” explains a spokesperson from the NWS. “If you’re in a low‑lying area, even a half‑foot rise can be enough to flood parking lots or wash out streets.”

Community Impact and Precautions

The advisory is not the first warning issued for Westchester County in the last year, which has already seen flooding events tied to winter storms and heavy rainfall. In previous events, several neighborhoods had to be evacuated, and the county’s highway system experienced intermittent closures. Local officials are reminding residents to stay informed through the county’s emergency alert system, which will provide real‑time updates on road closures and flooding.

“It’s important to keep your eyes on the official weather channels and to have a plan if you live in a flood‑prone area,” says Westchester County Emergency Operations Director, Laura Martinez. “Check whether your home sits on the floodplain, and have an evacuation route ready. Also, be sure to have your emergency kit—blankets, batteries, water, and any medications—accessible.”

In addition to potential flooding, the advisory notes that the combination of wind and rain could lead to reduced visibility and hazardous driving conditions. Residents are advised to avoid unnecessary travel, particularly on the major highways that border the river, such as I‑287, Route 9, and the Tappan Zee Bridge, which has already seen traffic reductions in previous low‑water events.

Historical Context

Westchester County is not new to coastal flooding. In 2019, a nor'easter brought heavy rains and high tides that resulted in flooding along the Hudson River waterfront. The county’s infrastructure was tested, and several schools had to close for the remainder of the school day. While the 2025 event is expected to be milder, the county’s emergency planners are treating the situation with caution.

Further Information

For detailed flood height predictions, the NWS provides a downloadable flood map that shows the exact extent of the advisory. Residents can view the map on the NWS website (https://www.weather.gov/newyork). The NWS also offers a mobile app that will push alerts directly to smartphones if you enable “Push Notifications.”

Additionally, the article’s original source links to the National Hurricane Center’s advisory page for the Atlantic basin, which gives a broader view of the storm’s development. This link provides real‑time updates on the system’s trajectory, central pressure, and forecasted movement: https://www.nhc.noaa.gov.

Bottom Line

While Westchester County’s Coastal Flood Advisory does not yet predict a full‑blown flood event, the potential for water to reach roads, parking lots, and low‑lying homes is real. Residents, especially those in vulnerable areas, are urged to monitor the NWS updates closely, prepare for possible evacuation, and stay informed through local media outlets. The advisory will remain in effect until early Wednesday evening, at which point the weather situation may evolve into a more severe warning, or it may lift if the storm’s intensity wanes.

By staying proactive and vigilant, Westchester County residents can mitigate the impact of this coastal flooding event and keep their communities safe.