1867 natural disasters

The San Narciso Hurricane was a extremely deadly and record breaking Atlantic hurricane that caused devastation to the British Virgin Islands and Puerto Rico. After forming abnormally late for a Lesser Antilles hurricane, it went to be the costliest and deadliest storm of the 1867 Atlantic hurricane season. It's also the only hurricane on the official database to strike Puerto Rico after September, doing so over a month later then its runner-up. It's also the only known hurricane to strike the territory from the northwest.

The 1867 Keelung earthquake occurred off the northern coast of Taiwan on the morning of December 18 with a magnitude of 7.0. It produced strong shaking that seriously damaged the cities of Keelung and Taipei. A tsunami, thought to be the only confirmed destructive of its kind in Taiwan, drowned hundreds and had a run-up exceeding 15 m (49 ft). The total death toll was estimated to be 580 while more than 100 were injured. It was followed by aftershocks that were felt on average ten times a day.

The 1867 Virgin Islands earthquake and tsunami occurred on November 18, at 14.45 in the Anegada Passage about 20 km southwest of Saint Thomas, Danish West Indies (now U.S. Virgin Islands). The Ms  7.5 earthquake came just 20 days after the devastating San Narciso Hurricane in the same region. Tsunamis from this earthquake were some of the highest ever recorded in the Lesser Antilles. Wave heights exceeded 10 m (33 ft) in some islands in the Lesser Antilles. The earthquake and tsunami resulted in no more than 50 fatalities, although hundreds of casualties were reported.

The 1867 Atlantic hurricane season featured the San Narciso hurricane, one of the deadliest tropical cyclones to impact the Virgin Islands and Puerto Rico. A total of nine known tropical systems developed during the season, with the earliest existing by June 21 and the last dissipating on October 31. Of the ninth cyclones, seven intensified into hurricanes, one of which became a major hurricane. However, in the absence of modern satellite and other remote-sensing technologies, only storms that affected populated land areas or encountered ships at sea were recorded, so the actual total could be higher. An undercount bias of zero to six tropical cyclones per year between 1851 and 1885 and zero to four per year between 1886 and 1910 has been estimated.