Severe · Coastal Flood WarningActive alert
Coastal Flood Warning issued September 25 at 5:27AM EDT until September 27
Affecting Northwest Suffolk; Northern Nassau
In effect until: Sep 25, 2026, 5:30 PM
Northwest Suffolk; Northern Nassau
Likely impact; effects through 5:30 PM.
Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth.
Read the original bulletin (official text)
* WHAT...Two to three feet of inundation above ground level expected in vulnerable areas near the waterfront and shoreline. * WHERE...Northwest Suffolk and Northern Nassau Counties. * WHEN...From 6 PM this evening to 6 PM EDT Sunday. * IMPACTS...Widespread flooding of vulnerable areas near the waterfront and shoreline, including roads, parking lots, parks, lawns, and homes and businesses with basements near the waterfront. 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. * ADDITIONAL DETAILS...Moderate flooding will occur over multiple high tide cycles tonight through Sunday. The worst flooding is expected with the daytime high tide cycles Saturday and Sunday.
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™