page_title: 2001–02 South-West Indian Ocean cyclone season
section_title: Other systems
hierarchical_section_title: 2001–02 South-West Indian Ocean cyclone season / Systems / Other systems
caption_attribution_description: Saffir-Simpson Hurricane ScaleTDTS12345 English: Tropical Storm One-S (2001) track. Uses the color scheme from the Saffir-Simpson Hurricane Scale.
context_page_description: The 2001–02 South-West Indian Ocean cyclone season had the earliest named storm since 1992. Many storms formed in the north-east portion of the basin, and several more originated around Australia. The basin is defined as the waters of the Indian Ocean west of longitude 90°E to the coast of Africa and south of the equator. Eleven tropical storms formed, compared to an average of nine. Tropical systems were present during 73 days, which was significantly higher than the average of 58 for this basin.
  Tropical cyclones in this basin are monitored by the Regional Specialized Meteorological Center in Réunion. The season started on November 1, 2001, and ended on April 30, 2002; for Mauritius and the Seychelles, the season continued until May 15. These dates conventionally delimit the period of each year when most tropical cyclones form in the basin; however, storms formed both before and after the designated season. The first storm was Andre, which emerged from the Australian basin as Tropical Cyclone Alex in late October.
context_section_description: The first storm of the season originated from an area of convection east of Diego Garcia in early October 2001. Moving southwestward, it slowly organized, with convection developing around a weak circulation. Late on October 3, MFR classified the system as a zone of disturbed weather. On October 5, the agency re-classified it as a tropical disturbance and later as Tropical Depression 1. The circulation was partially exposed due to wind shear, although it had good outflow. The JTWC initiated advisories on Tropical Cyclone 01S at 0600 UTC on October 6, estimating winds of about 65 km/h (40 mph). Due to the shear, the convection gradually diminished, prompting the MFR to downgrade it to a tropical disturbance on October 7. The next day, the JTWC issued its last advisory, noting that the system was dissipating.
  A zone of disturbed weather formed on November 15 in the eastern part of the basin. It remained a zone of disturbed weather for a few days before briefly strengthening into a tropical depression on November 21. It dissipated two days later. This system was also designated as tropical cyclone by the JTWC.
  On February 5, a tropical low developed in the Mozambique Channel. Classified as Tropical Disturbance 9 by MFR, the system moved southeastward, dissipating on February 6. The season ended with a tropical disturbance, which formed on June 13 to the east-southeast of Diego Garcia. It moved to the south, and was last monitored on June 15.
caption: Track of Tropical Depression 1
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