Coastal Flood Advisory issued May 21 at 4:36PM EDT until May 22 at 11:00PM EDT by NWS Upton NY

* WHAT…Up to 1 1/2 half foot of inundation above ground level
expected in vulnerable areas near the waterfront and shoreline.
Up to 1/2 ft of inundation above ground level possible for
vulnerable areas near the waterfront and shoreline of southern
Nassau with the early Thursday morning high tide.

* WHERE…Northeast Suffolk, Southwest Suffolk, Southeast
Suffolk and Southern Nassau Counties.

* WHEN…From 2 PM to 11 PM EDT Thursday.

* COASTAL FLOOD IMPACTS…Minor flooding in the most vulnerable
locations near the waterfront and shoreline. Expect up to 1 1/2
feet 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.

* SHORELINE IMPACTS…Along the north shore of the south fork of
Long Island, breaking waves of 1 to 3 ft may cause dune erosion
and localized washovers, as well as enhance splashover and
flooding onto shoreline roads and properties. Along the ocean
front and Orient Point, breaking waves of 4 to 6 ft on an east
to west sweep will result in beach erosion and beach flooding
during the times of high tide. Localized dune erosion is
possible.

* ADDITIONAL DETAILS…Highest confidence in widespread minor
coastal flooding is along the Great South bayfront of Nassau
County, and along the north shore of the south fork of Long
Island, Orient Point and tidally affected portions of the
Peconic River. Coastal flooding is likely to be more isolated
for the central and eastern Great South Bay, Moriches Bay and
Shinnecock Bay communities, but tidal piling presents potential
for more widespread minor coastal flooding.