...Long Island into southern New England...
Tropical system Henri -- forecast by the latest NHC updates to move
onshore over Long Island during the day Sunday -- will be
accompanied by widespread strong winds and heavy rainfall. With
little instability expected inland, thunderstorm activity in outer
bands will likely be muted to some degree. Still, a few stronger
convective cells in bands within the northeast quadrant of the storm
may prove capable of convectively enhanced wind gusts, and possibly
a brief tornado or two, through the period.