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1870 Matanzas hurricane

1870 Atlantic hurricane that hit Cuba

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In Cuba, the hurricane produced high winds and intensive rainfall. Two rivers, the San Juan and the Yumurí, burst their banks, devastating Matanzas. These impacts included approximately 410 homes being destroyed, likely within the city alone. Floodwaters swept away two bridges, a railroad station, and a train, along with its passengers. The nearby city of Cárdenas reported major damage to warehouses and wharves, as well as the destruction of several dwellings; many more lost their roofs or otherwise suffered damage. Throughout the country, a loss of roughly one-third of sugar crops occurred. At least 800 people died in Cuba, making it one of the deadliest Atlantic hurricanes on record. Damage was estimated at over $12 million (1870 USD; $262 million in 2024). In Florida, the lower parts of Key West flooded and tides carried away a few bridges. Significant damage to vegetation and trees also occurred. Numerous vessels wrecked as far north as the Jupiter Inlet. In the Bahamas, Bimini reportedly began experiencing the storm as early as October 7. Abnormally high tides inundated South Bimini, while the hurricane also capsized and dismasted a number of ships sailing in the vicinity of the Bahamas.

Meteorological history

Cuban meteorologist Manuel Fernández de Castro y Suero noted in his 1871 study entitled Estudio Sobre los Huracanes de la Isla de Cuba durante el mes de octubre de 1870 that a tropical cyclone developed around 19°N over the Caribbean Sea between Cuba, Haiti, and Jamaica on October 5. The Atlantic hurricane reanalysis project in 2003 opted to begin the track of this system about 35 mi (55 km) south of Haiti's Tiburon Peninsula on that day. The storm moved west-northwestward and intensified into a hurricane south of Cuba on the following day. Thereafter, the cyclone rapidly strengthened further and likely peaked with maximum sustained winds of 115 mph (185 km/h) around 12:00 UTC on October 7, making it a Category 3 hurricane on the present-day Saffir–Simpson scale. Prior to Ramón Pérez Suarez's 2000 research uncovering an atmospheric pressure of 959 mbar (28.3 inHg) in Nueva Paz, mathematical calculations by Father Benito Viñes, including an atmospheric pressure of 969 mbar (28.6 inHg) at Matanzas, led him to conclude that the storm possessed sustained winds as high as 102 mph (164 km/h), corresponding to Category 2 status. He also calculated that the strongest winds extended 25–30 mi (40–50 km) from the center.

Shortly after 12:00 UTC on October 7, the hurricane made landfall along the Zapata Peninsula, located in the Ciénaga de Zapata municipality of Cuba's Matanzas Province with winds still at 115 mph (185 km/h). The cyclone briefly crossed the Ensenada de la Broa before striking land again between Playa Mayabeque and Playa del Rosario in modern-day Mayabeque Province, likely as a Category 2 hurricane with winds of 105 mph (165 km/h). Although Fernández de Castro expressed uncertainty about the location of landfall, Viñes believed that the storm moved ashore east of Playa del Rosario due to wind and atmospheric pressure data from Havana. Viñes and Father Mariano Gutiérrez-Lanza both stated that the hurricane recurved over the island, with the latter noting a very small inclination to moving northeastward, though the former estimated a sharper turn, indicating that the storm passed between Madruga and Nueva Paz before emerging into the Straits of Florida near Matanzas. Gutiérrez-Lanza noted that Nueva Paz and Matanzas reported a temporary calmness associated with the cyclone. However, the Atlantic hurricane database (HURDAT) indicates no eastward movement before 06:00 UTC on October 8, at which time the storm was approaching the Straits of Florida close to Boca de Jaruco.

Having weakened to Category 1 intensity just before reaching the Straits of Florida early on October 8, the cyclone quickly re-strengthened into a Category 2 hurricane as it moved slowly northeastward. Between October 9 and October 11, the hurricane passed close to the Florida Keys, coming within 15 mi (25 km) of landfall on October 10. After brushing the island chain and southern Florida, the storm then struck Grand Bahama and the Abaco Islands in the Bahamas early on October 12 as a Category 2 hurricane. Although the steamship Morro Castle recorded sustained winds of 104 mph (167 km/h) just south of the Abaco Islands on that day, subsequent observations suggest that the cyclone soon began weakening, falling to Category 1 status later on October 12. It moved out to sea, last being seen on October 14 by the brigs Iris and Toronto. The track listed in HURDAT ends at 18:00 UTC about 245 mi (395 km) west of Bermuda.

A study by climate scientist Michael Chenoweth in 2014 instead initiated the track of this system over the Cayman Islands near Little Cayman on October 5. Chenoweth concluded that the storm avoided striking the Zapata Peninsula and made landfall slightly farther west, between Playa Mayabeque and Surgidero de Batabanó. After emerging into the Straits of Florida, the hurricane rapidly intensified, briefly peaking as a Category 5 hurricane with winds of 160 mph (260 km/h), based on a peripheral atmospheric pressure of 914 mbar (27.0 inHg) on September 9. If confirmed, this would represent the earliest recorded Category 5 Atlantic hurricane in HURDAT, surpassing the current record-holder, in 1924. However, the results of the study remain preliminary as of 2024. The hurricane continued northeastward through October 16, by which time it became extratropical east of Newfoundland.

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