Cristobal also caused rip currents and 4 foot ( 1.2 m ) waves along the south shore of Long Island , New York . Three people drowned in the rip currents . The interaction between the remnants of Cristobal and a high pressure system over the Mid-Atlantic States produced rip currents and 4 foot ( 1.2 m ) waves along the south shore of Long Island , New York ; three people drowned from the rip currents .