SAVANNAH, Ga.—Tropical Storm Elsa carved a destructive and soaking path up the East Coast after killing at least one person in Florida and spinning up a tornado at a Georgia Navy base that flipped recreational vehicles upside-down and blew one of them into a lake. Elsa’s winds strengthened slightly Thursday morning to 45 mph, and it was dropping torrential rains as it made its way through North Carolina late Thursday morning, the National Hurricane Center said in its latest update. Elsa was expected to pass near the eastern mid-Atlantic states by Thursday night and move near or over the northeastern United States on Friday. Some re-strengthening was possible Thursday night and Friday while the system moves close to the northeastern United States. A tropical storm warning was in effect north of Great Egg Inlet, New Jersey to Sandy Hook, New Jersey, and for the coast of Long Island from East …