Severe Storm Surge ● Closed
Coastal Flood Warning issued September 26 at 5:14AM EDT until September 27 at 6:00PM EDT by NWS Upton NY, United States of America
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* WHAT...For the Coastal Flood Warning, one to two feet and
locally up to 2 1/2 feet of inundation above ground level in
vulnerable areas near the waterfront and shoreline. For the High
Surf Advisory, large breaking waves of 7 to 14 feet in the surf
zone. For the High Rip Current Risk, dangerous rip currents.
* WHERE...Southwest Suffolk and Southern Nassau Counties.
* WHEN...For the Coastal Flood Warning, until 6 PM EDT Sunday.
For the High Surf Advisory, until 8 PM EDT Sunday. For the
High Rip Current Risk, through Sunday evening.
* COASTAL FLOOD IMPACTS...Widespread moderate to major flooding of
vulnerable areas near the waterfront and shoreline. There is an
elevated threat to low lying properties. Flooding could extend
inland from the waterfront and shoreline into areas that
typically don't experience coastal flooding. Flooding will
likely be exacerbated along north facing shorelines from wave
action, particularly for the barrier island from Atlantic Beach,
Long Beach to Jones Beach. This will result in numerous road
closures and cause widespread flooding of low lying property
including parking lots, parks, lawns, and homes and businesses
with basements near the waterfront. Vehicles parked in
vulnerable areas near the waterfront will likely become flooded.
Flooding in the most vulnerable areas may not totally recede
during the times of low tide.
* SHOREFRONT AND BEACH IMPACTS...Breaking waves of 6 to 10 feet
along with elevated water levels will result in widespread dune
erosion and beach flooding. Localized overwashes are possible
where dune structures are compromised, resulting in some
flooding of roadways and vulnerable structures behind protective
dunes. Dangerous swimming and surfing conditions and localized
beach erosion. Life threatening rip currents are likely for all
people entering the surf zone. Anyone visiting the beaches
should stay out of the surf. Rip currents can sweep even the
best swimmers away from shore into deeper water.
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | Southwest Suffolk; Southern Nassau |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Expected |
| Cap Certainty | Likely |
| Cap Expires | 2026-09-26T17:00:00-04:00 |
Official source
Warnings courtesy of the issuing national meteorological service, via the WMO Alert Hub.
This is an official warning issued by the authority named above. Follow its instructions and those of your local emergency services.
Severity as published by WMO Alert Hub (national weather services).
View original reportAlso reported by: WMO WMO WMO WMO WMO WMO WMO
This event as JSON · API and licence
Source updated 23 days ago (Sep 26, 2026 09:15 UTC) · we last heard from WMO Alert Hub (national weather services) 34 seconds ago
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About this location
The agency did not publish coordinates for this warning. The pin is the centre of the country, not the location of the event — read the area name, not the map, for where it applies.
Area as the agency stated it: Southwest Suffolk; Southern Nassau
Official authorities in United States
If you are there, these are the bodies whose instructions apply. This site is not an emergency service and does not issue warnings.
More for United States →What to do
Follow the instructions issued by WMO Alert Hub (national weather services) and your local emergency services. The guidance below is background.
Understanding surge zones, evacuation timing, and why storm surge is the deadliest part of a tropical cyclone.
Open Storm Surge Safety Guide →Nearby & related events
Disclaimer: figures are automatic feeds from the named agencies and may be revised. Do not use this page for life-safety decisions — follow official local emergency services.