Coastal Flood Warning Issued for Bronx, Queens, Nassau, and Suffolk Counties

Source: NOAA · New York City and Long Island

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The National Weather Service has issued a Coastal Flood Warning for parts of New York, forecasting up to 2.5 feet of inundation and moderate flooding starting Sunday night.

What this NWS weather alert tells you, and what most readers miss

This notice was issued by NOAA on February 27, 2026 and geographically references New York City and Long Island. Its severity classification of "high" signals how the issuing agency weighs the risk of harm if no action is taken — "critical" and "high" tier alerts typically carry direct consumer actions, while "medium" and "low" tend toward informational guidance or monitoring advisories. The category it belongs to — Weather Alerts — determines the regulatory framework behind it, which shapes what remedies (refunds, replacements, recalls, evacuations) are available to affected individuals and who holds statutory responsibility for enforcement.

Most readers skim a notice like this, check whether they are personally affected, and move on. The more useful lens is to read it as a data point about the issuing system: how quickly NOAA detected the hazard, how precise the geographic or product-identifier scope is, and whether similar notices have clustered in the same category or region in the last 90 days. Cluster patterns frequently precede a broader regulatory action — a single localized NWS weather alert is isolated; three of them within a quarter often indicate a supply-chain, infrastructure, or seasonal driver that will keep producing notices until something structural changes.

For decision-making, Areazine pairs each alert with the original agency URL, the full agency name, and a timestamp so you can verify the notice against the primary source before acting on it. Tags on this item (weather, alert, CoastalFloodWarning, NewYork) map to related alerts in the same area of risk — browsing them together gives a clearer picture than any single notice alone, because the shape of an ongoing issue only becomes visible across multiple sequential alerts.

Alert Details

The National Weather Service in Upton, NY, has issued a Coastal Flood Warning (Alert Code: CFW). This warning indicates that widespread moderate flooding is likely in vulnerable areas near the waterfront and shoreline.

Affected Areas

The following geographic regions are included in this warning:

  • Bronx
  • Northwest Suffolk
  • Northern Queens
  • Northern Nassau

What You Should Do

Residents should take necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth. Avoid parking vehicles in vulnerable areas near the waterfront, as they will likely become flooded. Residents in homes or businesses with basements near the waterfront should prepare for potential flooding.

Expected Conditions

Inundation of 1 1/2 to 2 1/2 feet above ground level is expected in low-lying, vulnerable areas. This will likely result in numerous road closures and flooding of property including parking lots, parks, and lawns. Breaking surf of 3 to 5 feet along north and northeast facing shorelines will cause beach flooding and dune erosion during high tide. Ice cover in bays and harbors may exacerbate flooding and cause damage to shoreline structures. Conditions are dependent on the timing of a windshift from northeast to north storm force winds.

Timeline

The warning is effective from midnight Sunday night, February 23, until 5:00 AM EST Monday, February 23. The alert was originally issued on February 21 at 2:44 PM EST.

Original source: NOAA Official Notice ↗

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Frequently Asked Questions

Common questions about this NWS weather alert.

What is this NWS weather alert about?
The National Weather Service has issued a Coastal Flood Warning for parts of New York, forecasting up to 2.5 feet of inundation and moderate flooding starting Sunday night.
Which agency issued this alert?
This alert was issued by NOAA. The original notice is available at the source link at the bottom of this article.
How severe is this alert?
This alert is classified as "high" severity. Take precautions and monitor for updates.
What area is affected?
This alert affects New York City and Long Island. Check with NOAA for the most current geographic scope.
Where can I find more Weather Alerts updates?
Browse the full Weather Alerts feed on Areazine at areazine.com/weather/ for the latest updates from NOAA and other agencies.