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1893 Atlantic hurricane season

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This map shows the tracks of all tropical cyclones in the 1893 Atlantic hurricane season . The points show the location of each storm at 6-hour intervals. The colour represents the storm's maximum sus
JasonHo1222 · Public domain

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Through Atmospheric pressure

Neither the reanalysis by meteorologists José Fernández-Partagás and Henry F. Diaz in 1996 nor the Atlantic hurricane reanalysis project added or removed any storms from the official hurricane database (HURDAT), though the former revised the tracks of a few systems and the latter upgraded two cyclones to major hurricane intensity. However, a study by climate researcher Michael Chenoweth, published in 2014, lists thirteen tropical cyclones, proposing the removal of fifth, eleventh, and twelfth systems as well as the addition of four new storms, but his reanalysis has yet to be added to HURDAT.

The most intense tropical cyclone of the season, the tenth system, peaked as a Category 4 hurricane on the present-day Saffir–Simpson scale with maximum sustained winds of 130 mph (215 km/h). On October 2, the hurricane struck Louisiana, causing approximately 2,000 fatalities and about $5 million (1893 USD) in damage. Another very deadly cyclone, the season's sixth system, brought devastating storm surge and high winds to the Sea Islands region of the Southeastern United States and nearby inland areas in late August, killing at least 1,000 people and inflicting damage totaling about $1 million. In mid-October, the ninth system also impacted South Carolina but caused death and devastation as far inland as Ontario, with 100 fatalities and well over $1 million in damage. The third and fourth storms caused 37 and 34 deaths, respectively, most due to maritime incidents along the coasts of the United States and Atlantic Canada. Additionally, the seventh and eighth systems killed five people each. Overall, the storms of the 1893 Atlantic hurricane season collectively caused more than $7 million in damage and more than 3,191 fatalities.

Season summary

The Atlantic hurricane database (HURDAT) officially recognizes that twelve tropical cyclones formed during the 1893 season, ten of which strengthened into a hurricane, with five of those intensifying into a major hurricane. The Atlantic hurricane reanalysis project did not add or remove any storms from the 1996 reanalysis of the season by meteorologists José Fernández-Partagás and Henry F. Diaz, but upgraded the third and fourth systems to major hurricane status. However, a more recent reanalysis by climate researcher Michael Chenoweth, published in 2014, adds four storms and removes three others—the fifth, eleventh, and twelfth systems—for a net gain of one cyclone, although these proposed changes have yet to be approved for inclusion to HURDAT.

On June 12, ships initially detected the first known tropical cyclone of the season over the Bay of Campeche. After crossing the Southeastern United States, the storm intensified into a hurricane, but became extratropical on June 19. July also featured one system, which peaked as a Category 2 hurricane on the present-day Saffir–Simpson scale and made landfall in Nicaragua and Belize (then known as British Honduras). Tropical cyclogenesis increased significantly in August, with five cyclones, all of which intensified into at least a Category 2 hurricane. On August 22, the season's third, fourth, sixth, and seventh all existed at hurricane intensity. The only other instance of four active simultaneous hurricanes in the Atlantic occurred on September 25, 1998. Three storms, each also all hurricanes, are known to have developed in September. The season's tenth system, which formed on September 27, became the most intense of the season on October 2, peaking as a Category 4 with maximum sustained winds of 130 mph (215 km/h) and a minimum atmospheric pressure of 948 mbar (28.0 inHg). One cyclone each formed in October and November. The season's twelfth and final known system transitioned into an extratropical cyclone on November 9 over the northwestern Atlantic.

Extensive impacts and a large number of deaths occurred as a result of cyclones during the 1893 season, especially in the United States. The country experienced five hurricane landfalls, with three of those being major hurricanes, becoming one of only four seasons on record in which at least three systems achieving that intensity struck the United States, the others being 1909, 2004, and 2005. Both the sixth and tenth systems, also known as the Sea Islands and Cheniere Caminada hurricanes, respectively, caused at least 1,000 fatalities, the only known season with more than one system resulting in that many deaths in the United States. While both storms may have killed as many as 2,000 people each, the National Hurricane Center estimated the seasonal nationwide death toll at 3,000. Consequently, the 1893 hurricane season remains one of the deadliest in United States history. Throughout the basin, the cyclones of the 1893 Atlantic hurricane season collectively caused more than $7.04 million in damage and over 3,191 fatalities.

The season's activity was reflected with an accumulated cyclone energy (ACE) rating of approximately 231, the third-highest total ever recorded, behind only 2005 and 1933. The ninth system alone achieved an ACE rating of around 63.5, one of the highest values ever recorded for an individual storm. ACE is a metric used to express the energy used by a tropical cyclone during its lifetime. Therefore, a storm with a longer duration will have higher values of ACE. It is only calculated at six-hour increments in which specific tropical and subtropical systems are either at or above sustained wind speeds of 39 mph (63 km/h), which is the threshold for tropical storm intensity. Thus, tropical depressions are not included here.

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