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1959 Atlantic hurricane season

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Through Atlantic Ocean and The Maritimes

The most significant storm of the season was Hurricane Gracie, which peaked as a 140 mph (230 km/h) Category 4 hurricane on the Saffir–Simpson hurricane wind scale. After weakening slightly, Gracie made landfall as a 130 mph (210 km/h) Category 4 hurricane in South Carolina on September 29. It brought strong winds, rough seas, heavy rainfall, and tornadoes to the state, as well as North Carolina and Virginia. Overall, Gracie caused 22 fatalities and $14 million in damage. Following Hurricane Gracie was Hurricane Hannah, a long-lived storm that did not cause any known impact on land. The last two tropical cyclones, Tropical Storm Irene and Hurricane Judith, both caused minor coastal and inland flooding in Florida. The storms of the 1959 Atlantic hurricane season were collectively attributed to $24 million (1959 USD) and 64 fatalities.

Season summary

The 1959 Atlantic hurricane season officially began on June 15, 1959, and it ended on November 15, 1959. Eleven tropical cyclones were reported during the season. All eleven of them developed into a tropical storm, and all but one was assigned a name. Upon later reanalysis of the season's various weather systems, three additional tropical storms were identified and added to the HURDAT tropical cyclone database. One new non-developing tropical depression was also identified. Of the 14 tropical storms now identified, 7 strengthened into a hurricane, with 2 reaching major hurricane strength (Category 3 or greater on the Saffir-Simpson scale). These numbers were slightly above (or at) the National Oceanic and Atmospheric Administration's 1950–2000 averages of 9.6 tropical storms, 5.9 hurricanes, and 2.3 major hurricanes. Collectively, the tropical cyclones of the 1959 Atlantic hurricane season caused 64 fatalities and about $24 million (1959 USD) in damage.

Tropical cyclogenesis began with the pre-season development of Tropical Storm Arlene in the Gulf of Mexico on May 28. Storm formation continued at a brisk pace for several weeks. In June, Tropical Storm Beulah and an unnamed hurricane formed; the latter hit Maritime Canada as an extratropical cyclone, causing the worst fishing-related disaster in New Brunswick in 100 years. Another pair of hurricanes, Cindy and Debra, formed in the month of July. Tropical activity slowed down in August, with only Tropical Storm Edith forming during the month. Next, three tropical cyclones formed in September—Flora, Gracie, and Hannah—all of which attained hurricane status. Then, in October, Tropical Storm Irene and Hurricane Judith, the 1959 season's final storm, developed. The latter storm dissipated on October 21, almost a month before the official end of the season on November 15.

The season's activity was reflected with an accumulated cyclone energy (ACE) rating of 77, which is slightly below the 1950–2000 average of 94.7. ACE is, broadly speaking, a measure of the power of the hurricane multiplied by the length of time it existed, so storms that last a long time, as well as particularly strong hurricanes, have high ACEs. It is only calculated for full advisories on tropical systems at or exceeding 39 mph (63 km/h), which is the threshold for tropical storm status.

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