Storm surge, hurricane conditions, and rainfall that could cause flooding are expected to begin as early as Saturday.
Henri is expected to make landfall on Long Island or in southern New England on Sunday.
New York hasn’t had a direct hit from a major hurricane season storm since Superstorm Sandy wreaked havoc in 2012.
New England's last hurricane was in 1991, with the deadly Bob.
Preparations have increased their urgency.
For the Stormtracker 16 forecast, click here.