Tropical Depression Thirteen formed from a very small but well-organized low in the Bay of Campeche on October 6. It quickly strengthened into Tropical Storm Marco with 65 mph (100 km/h) winds that afternoon. Marco made landfall near Veracruz, Mexico the next morning at the same intensity. Marco dissipated that night as the small circulation moved inland. At one point, tropical storm-force winds were estimated to extend only 10 miles from the center, which makes it the smallest tropical cyclone on record, beating Cyclone Tracy.