page_title: Timeline of the 1990–91 South Pacific cyclone season
section_title: May
hierarchical_section_title: Timeline of the 1990–91 South Pacific cyclone season / Timeline of storms / May
caption_attribution_description: English: Cyclone Lisa (1991) track. Uses the color scheme from the Saffir-Simpson Hurricane Scale. The points show the location of each storm at six-hour intervals. The colour represents the storm's maximum sustained wind speeds as classified in the Saffir-Simpson Hurricane Scale (see below), and the shape of the data points represent the nature of the storm. Saffir–Simpson scale Tropical depression≤38 mph≤62 km/h Category 3111–129 mph178–208 km/h Tropical storm39–73 mph63–118 km/h Category 4130–156 mph209–251 km/h Category 174–95 mph119–153 km/h Category 5≥157 mph≥252 km/h Category 296–110 mph154–177 km/h Unknown Storm type Tropical cyclone Subtropical cyclone Extratropical cyclone / Remnant low / Tropical disturbance
context_page_description: The 1990–91 South Pacific cyclone season was a below-average season; only two tropical cyclones occurred within the South Pacific to the east of 160°E. The season officially ran from November 1, 1990, to April 30, 1991, but the first disturbance of the season formed on November 23 and the last dissipated on May 19. This is the period of the year when most tropical cyclones form within the South Pacific Ocean. During the season, no one was killed from tropical disturbances within the South Pacific. However, six people were killed by Cyclone Joy when it made landfall on Australia. The only tropical cyclone to cause any damage while within this basin was Sina, which caused at least $18.5 million worth of damage to Fiji and Tonga. As a result of the impacts of both Joy and Sina, the names were retired from the tropical cyclone naming lists.
  Within the South Pacific, tropical cyclones were monitored by the Tropical Cyclone Warning Centers at the Fiji Meteorological Service in Nadi and by the Meteorological Service of New Zealand Limited in Wellington.
context_section_description: May 11
  1200 UTC, (0000 FST, May 12) – TCWC Nadi reports that Tropical Cyclone Lisa (21P) has moved into the South Pacific from the Australian region, while at its peak intensity as a category 2 tropical cyclone with 10-minute sustained wind speeds of 110 km/h (70 mph).
  May 12
  1200 UTC, (12:00 FST), May 13) – TCWC Nadi issues its final advisory on Tropical Cyclone Lisa as it weakens into a depression.
  1200 UTC, (00:00 FST, May 13) – The JTWC reports that Tropical Storm Lisa (21P) has weakened into a tropical depression.
  1800 UTC, (0600 FST, May 13) – Depression Lisa (21P) passes over Anatom Island, Vanuatu.
  1800 UTC, (06:00 FST, May 13) – TCWC Nadi reports that Depression Lisa (21P) has weakened into an extratropical cyclone.
  May 19
  0000 UTC, (1200 FST) – The extratropical remnants of Tropical Cyclone Lisa are last noted by TCWC Wellington as they dissipate.
caption: Track map of Tropical Cyclone Lisa (21P)
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