trees, damaged roofs, and severed telegraph wires throughout Mobile. At the height of the storm, a floating dry dock broke free from its moorings and traveled about up the Mobile River, crushing wharves and boats along its path. Overall, damage from the storm amounted to an estimated $200,000 (1870 USD). Hurricane Two A tropical storm formed on August 30. The storm moved northwest towards the United States, before it peaked as a Category 2 hurricane. The storm then curved back to the northeast. It travelled parallel to the coast of Nova Scotia until it was last seen on September 4 near Newfoundland. Tropical Storm Three A tropical storm was detected to the west of Cape Verde on September 1. Tracking westward, it was encountered by another ship on September 4. The storm's subsequent progress is unknown. Hurricane Four This hurricane was first encountered by a ship about northeast of San Juan, Puerto Rico, on September 9. The storm tracked generally northward, and on September 10, it passed west of Bermuda. There, the storm produced tropical storm-force winds that extensively damaged banana and other fruit trees. Based on a central barometric pressure reading of from the brig Lizzie M. Morrell, the storm is believed to have achieved major hurricane intensity. Curving northeastward, the hurricane underwent extratropical transition by September 13. Hurricane Five Numerous ships in the western Atlantic reported stormy weather from September 17 through 20. By weighting these reports according to their credibility and consistency, Partagás was able to construct an approximate recurving track for the hurricane. As the system accelerated northeastward, it probably transitioned into an extratropical cyclone on September 19. Hurricane Six First Key West Hurricane of 1870 or Hurricane of San Marcos of 1870 On October 5, a tropical storm developed south of Haiti. It moved west-northwest, becoming a hurricane south of Cuba on October 6. The hurricane rapidly strengthened to Category 3 with peak winds of prior to hitting Matanzas, Cuba on October 7. After crossing Cuba, the hurricane moved slowly northeastward through the Florida Straits generating Category 1 winds over the Florida Keys. It moved out to sea, last being seen on October 14. The combination of sustained high winds, intensive rainfall and two rivers, the San Juan and the Yumuri, bursting their banks destroyed the city and caused the loss of some 800 lives. 1,200 people died in Cuba; it was one of the