Coastal Flood in Southeast Suffolk, New York

Moderate coastal flooding and major beach erosion occurred along the south shore of SE Suffolk:

At the East Moriches USGS tidal gauge, moderate coastal flooding of 5.3 ft MLLW or more occurred from 1130 AM EST to 230 PM EST, with a peak water level of 5.7 ft MLLW from 142 PM EST to 148 PM EST.

At the Montauk NOS tidal gauge, moderate coastal flooding of 4.9 ft MLLW or more occurred from 1100 AM EST to 200 PM EST, with a peak water level of 5.0 ft MLLW 1106 AM EST.

At the Ponquoque USGS tidal gauge, moderate coastal flooding of 5.9 ft MLLW or more occurred from 954 AM EST to 212 PM EST, with a peak water level of 6.5 ft MLLW 1254 PM EST to 100 PM EST.

An intensifying storm moved up the Eastern Seaboard from northern Florida on December 17th, to the coastal Mid Atlantic region on the 18th. This storm produced a strong onshore flow on the 18th that combined with high astronomical tides to cause widespread moderate to locally major coastal flooding and beach erosion along the south shore of Long Island during the late morning and afternoon.