Tropical cyclones in 2003

Tropical cyclones in 2003
Year summary map
Year boundaries
First system	01U
Formed	January 4, 2003
Last system	Heta
Dissipated	January 11, 2004
Strongest system
Name	Inigo
Lowest pressure	900 mbar (hPa); 26.58 inHg
Longest lasting system
Name	01U
Duration	18 days
Year statistics
Total systems	129
Named systems	85
Total fatalities	1,082 total
Total damage	$11.89 billion (2003 USD)
Related articles 2003 Atlantic hurricane season 2003 Pacific hurricane season 2003 Pacific typhoon season 2003 North Indian Ocean cyclone season 2002–03 South-West Indian Ocean cyclone season 2003–04 South-West Indian Ocean cyclone season 2002–03 Australian region cyclone season 2003–04 Australian region cyclone season 2002–03 South Pacific cyclone season 2003–04 South Pacific cyclone season
Other years 2001, 2002, 2003, 2004, 2005

During 2003, 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 129 systems formed with 85 of these developing further and were named by the responsible warning centre. The strongest tropical cyclone of the year was Cyclone Inigo, which was estimated to have a minimum barometric pressure of 900 hPa (26.58 inHg) and was tied with Cyclone Gwenda for being the most intense recorded cyclone in the Australian region in terms of pressure, with the possible exception of Cyclone Mahina.^[1] So far, 26 Category 3 tropical cyclones formed, including six Category 5 tropical cyclones formed in 2003, tying 2021. The accumulated cyclone energy (ACE) index for the 2003 (seven basins combined), as calculated by Colorado State University was 833 units.

Tropical cyclone activity in each basin is under the authority of an RSMC. The National Hurricane Center (NHC) is responsible for tropical cyclones in the North Atlantic and East Pacific. The Central Pacific Hurricane Center (CPHC) is responsible for tropical cyclones in the Central Pacific. Both the NHC and CPHC are subdivisions of the National Weather Service. Activity in the West Pacific is monitored by the Japan Meteorological Agency (JMA). Systems in the North Indian Ocean are monitored by the India Meteorological Department (IMD). The Météo-France located in Réunion (MFR) monitors tropical activity in the South-West Indian Ocean. The Australian region is monitored by five TCWCs that are under the coordination of the Australian Bureau of Meteorology (BOM). Similarly, the South Pacific is monitored by both the Fiji Meteorological Service (FMS) and the Meteorological Service of New Zealand Limited. Other, unofficial agencies that provide additional guidance in tropical cyclone monitoring include the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) and the Joint Typhoon Warning Center (JTWC).