The storm has to have had hurricane strength according to the NHC at the time of landfall. I may wait a couple of days to resolve in case of uncertainty but I will not wait until the next year's NHC report which sometimes includes reassessments.

Landfall: The intersection of the surface center of a tropical cyclone with a coastline. Because the strongest winds in a tropical cyclone are not located precisely at the center, it is possible for a cyclone's strongest winds to be experienced over land even if landfall does not occur. Source: National Hurricane Center.