Tropical cyclones in 2005

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Tropical cyclones in 2005" – news · newspapers · books · scholar · JSTOR (September 2020) (Learn how and when to remove this message)

This article possibly contains original research. Please improve it by verifying the claims made and adding inline citations. Statements consisting only of original research should be removed. (May 2024) (Learn how and when to remove this message)

Tropical cyclones in 2005
Year summary map
Year boundaries
First system	07
Formed	January 4, 2005
Last system	Zeta
Dissipated	January 6, 2006
Strongest system
Name	Wilma
Lowest pressure	882 mbar (hPa); 26.05 inHg
Longest lasting system
Name	Kenneth
Duration	16 days
Year statistics
Total systems	141
Named systems	94
Total fatalities	4,459 total
Total damage	$181.591 billion (2005 USD)
Related articles 2005 Atlantic hurricane season 2005 Pacific hurricane season 2005 Pacific typhoon season 2005 North Indian Ocean cyclone season 2004–05 South-West Indian Ocean cyclone season 2005–06 South-West Indian Ocean cyclone season 2004–05 Australian region cyclone season 2005–06 Australian region cyclone season 2004–05 South Pacific cyclone season 2005–06 South Pacific cyclone season
Other years 2003, 2004, 2005, 2006, 2007

During 2005, tropical cyclones formed within seven different tropical cyclone basins, located within various parts of the Atlantic, Pacific and Indian Oceans. During the year, a total of 141 systems formed with 94 of these developing further and were named by the responsible warning centre. The strongest tropical cyclone of the year was Hurricane Wilma, which was estimated to have a minimum barometric pressure of 882 hPa (26.05 inHg). 2005 was above-average in terms of the number of storms. The most active basin in the year was the North Atlantic, which documented 28 named systems. The Western Pacific had an near-average season with 23 named storms. The Eastern Pacific hurricane season experienced an above-average number of tropical storm intensity systems, numbering 15. Activity across the southern hemisphere's three basins – South-West Indian, Australian, and South Pacific – was fairly significant, with the regions recording 23 named storms altogether, with the most intense Southern Hemisphere cyclone of the year, Cyclone Percy from the South Pacific Ocean basin peaking at 145 mph (235 km/h) and 900 millibars. Throughout the year, 28 Category 3 tropical cyclones formed, including eight Category 5 tropical cyclones in the year. The accumulated cyclone energy (ACE) index for the 2005 (seven basins combined), as calculated by Colorado State University was 899.6 units.

The deadliest tropical cyclone of the year was Hurricane Stan in the North Atlantic Ocean, which killed more than 1,600 people in Central America. Hurricane Katrina, also in the North Atlantic Ocean, was the costliest tropical cyclone of the season and all time (tied with Hurricane Harvey in 2017), causing more than $125 billion in damage after striking the United States, especially New Orleans and its surrounding areas.