Town of Mamaroneck Emergency Alerts & Community Notifications
Coastal Flood Warning issued September 25 at 4:44PM EDT until September 27 at 6:00PM EDT by NWS Upton NY
Headline
Coastal Flood Warning issued September 25 at 4:44PM EDT until September 27 at 6:00PM EDT by NWS Upton NY
Description
* WHAT...1 to 2 ft, locally 2 1/2 ft, of inundation above ground
level expected in vulnerable areas near the waterfront and
shoreline. The highest water levels are likely with the
Saturday midday and possibly Sunday midday high tides.
* WHERE...Bronx, Northwest Suffolk, Northern Queens and Northern
Nassau Counties.
* WHEN...During the times of high tide until 6 PM EDT Sunday.
* COASTAL IMPACTS...Minor to locally moderate flooding is
expected in the most vulnerable locations near the waterfront
and shoreline. Expect 1 to 2 ft, locally 2 1/2 ft, of inundation
above ground level in low lying, vulnerable areas. Some roads
and low lying property including parking lots, parks, lawns and
homes/businesses with basements near the waterfront will
experience shallow flooding.
* SHOREFRONT/BEACH IMPACTS...Breaking waves of 3 to 6 ft, along
with elevated water levels, will result in areas of dune
erosion with damage to a few waterfront structures possible.
Splashover over seawalls and overwashes where dune structures
are compromised may locally exacerbate flooding of roadways and
vulnerable structures behind protective dunes.
* ADDITIONAL DETAILS...Another round of minor to moderate coastal
flooding is possible for the Sunday afternoon high tide cycle.
Instructions
Take the necessary actions to protect flood-prone property. If
travel is required, do not drive around barricades or through
water of unknown depth.
Additional Details
| Type | Alert |
| Phenomena | Coastal Flood |
| Severity | Warning |
| Event Code | CFW |
| Area | Bronx; Northwest Suffolk; Northern Queens; Northern Nassau |
| Sent | Friday, September 25, 2026 4:44 PM EDT |
| Expires | Saturday, September 26, 2026 6:15 PM EDT |
| Sender | NWS Upton NY |
| Id | urn:oid:2.49.0.1.840.0.5fc2c07df9f96bd93565647920d09b90f7ca1592.007.1 |