The accumulated cyclone energy (ACE) index for the 2003 (seven basins combined), as calculated by Colorado State University was 833 units.

The National Hurricane Center (NHC) is responsible for tropical cyclones in the North Atlantic and East Pacific.

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.

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).