Coastal Flood in Southern Nassau, New York

Widespread moderate to locally major coastal flooding occurred along the south shore back bays:

Major coastal flooding occurred at the Freeport USGS tidal gauge, with water levels above the major threshold of 7.2 ft MLLW from 542 AM EST to 800 AM EST, and a peak water level of 7.7 ft MLLW from 700 AM EST to 730 AM EST. Moderate coastal flooding above the threshold of 6.5 ft MLLW occurred from 454 AM EST to 836 AM EST.

Moderate coastal flooding occurred at the Reynolds Channel USGS tidal gauge, with water levels above the moderate threshold of 7 ft MLLW from 0512 EST to 0754 EST, and a peak water level of 7.8 ft MLLW from 0706 EST to 0718 EST.

Moderate coastal flooding occurred at the East Rockaway Inlet USGS tidal gauge, with water levels above the moderate threshold of 7.2 ft MLLW from 518 AM EST to 748 AM EST, and a peak water level of 7.9 ft MLLW at 724 AM EST.

Major coastal flooding also occurred at the nearby Lindenhurst USGS tidal gauge, with water levels above the major threshold of 4.1 ft MLLW from 712 AM EST to 1018 AM EST, and a peak water level of 4.5 ft MLLW at 900 AM EST. Moderate coastal flooding above the threshold of 3.6 ft MLLW occurred from 554 AM EST to 1148 AM EST.

Strong low pressure moving northeast from the Mid Atlantic region to southern New England during the night of January 9, 2024 into the early morning hours of January 10, 2024 produced high winds, which combined with high astronomical tides associated with an upcoming new moon to produce widespread moderate to major coastal flooding along the south shore of Long Island and along the Hudson River in Southeast New York.