NYC coastal flood warning: what to do before 6 p.m.

A National Weather Service coastal flood warning runs through 6 p.m. EDT on Sunday, September 27, for certain New York shoreline zones. Check the alert for your location; it does not cover every address.

Three checks to make before you leave

1. Check your ZIP code and the alert’s end time.Search your town or ZIP on the National Weather Service site. Read the named zone, start and end time, and follow the newest notice if it changes.
2. Protect a low basement and move your car.If you live in a flood-prone basement, know another exit and be ready to move to a higher floor. Move a car parked on a flood-prone waterfront street to higher ground before water rises. Never enter or re-enter a flooded basement.
3. Do not walk or drive through water.Turn around at flooded roads and barricades. Six inches of fast-moving water can knock a person down; 12 inches can carry away most cars. Call 911 for immediate danger; use NYC 311 for non-emergency flooding that blocks a road or damages property.

What does a coastal flood warning mean?

The National Weather Service’s New York office says a coastal flood warning means tidal or storm-driven flooding is occurring, imminent, or highly likely along the coast, generally within about 12 hours. The warning is tied to specific zones and times; it is not a prediction that every street will flood.

Rain flooding is a separate risk

A storm can also flood streets, underpasses and basements with rainwater. Check local rainfall and flash-flood alerts too, especially if you are in a low-lying area. Follow any evacuation order and the latest city instructions.

Checked at 1:47 a.m. EDT on Sept. 27, 2026. The listed coastal warning was scheduled to end at 6 p.m. EDT that day; alerts can change. This article is not a live warning feed.

Sources: National Weather Service, New York · National Weather Service, flood safety · NYC Emergency Management · Notify NYC.