— Hurricane Wilma, which raced into the Atlantic on Monday after ravaging southern Florida, could join forces Tuesday with an unusually early nor’easter off the New England coast, worsening that storm’s effects on a region already saturated by heavy rain this month. Across Florida, Wilma tore off roofs, toppled trees and hurled traffic signals into intersections. The hurricane shattered windows in high-rises in Fort Lauderdale and Miami and swamped one-third of Key West in seawater.