What was once Tropical Depression Fifteen in the Atlantic Ocean strengthened into Tropical Storm Nigel over the weekend, and forecasters expect the storm to become a hurricane by Monday. HISTORY OF HURRICANE LEENigel is the fourteenth named storm of the season and the fifteenth cyclone to reach at least tropical storm status. Tropical Depression Fifteen. (FOX Weather)Bermuda recently experienced tropical storm conditions when Hurricane Lee passed over 100 miles to its west. (FOX Weather)Tropical Storm Margot: No threat to USTropical Storm Margot continues to meander in the northern Atlantic, well away from land.