Coastal Flood — Southern Nassau, New York

2020-05-07 · Southern Nassau, New York

Event narrative

The moderate coastal flood threshold of 6.2 ft MLLW was touched at the USGS tidal gauge at Hudson Bay at Freeport from 2020-05-07 20:00 EST to 2020-05-07 20:12 EST.

Wider weather episode

Residual 3 to 4 foot southeast to south swell on the ocean waters after the passage of low pressure to the south and east helped prevent water drainage from the Long Island south shore back bays. This in combination with unusually high astronomical tides associated with the full moon of the 7th led to isolated moderate coastal flooding along the south shore back bays of Nassau County during the morning high tide cycles of the 7th and 8th.

Source: NOAA Storm Events Database, event_id 929041. Narrative written by the NWS forecast office that issued the report.