The 2009 map placed more than 90,000 Nassau and Suffolk buildings in flood-hazard zones. After the 2009 remapping, 347 Long Island residents filed appeals challenging their homes' inclusion.

On Friday at 3:13 a.m. the National Weather Service issued a flood watch in effect until Saturday at 1 a.m. for Suffolk and Nassau counties. The weather service says, "Flooding caused by excessive ...