Tropical Cyclone Ruby was a tropical cyclone which impacted New Caledonia with strong winds and rainfall, after its predecessor tropical low and a nearby trough caused disruption over some parts of the Solomon Islands. The third named system of the 2021-22 Australian region cyclone season and the first cyclone of the 2021-22 South Pacific cyclone season, Ruby formed from an area of convection that was first monitored by the Joint Typhoon Warning Center (JTWC) on 8 December in the Solomon Sea. However, the system didn't officially become a tropical low until 06:00 UTC on 10 December, when the Australian Bureau of Meteorology (BoM) started to issue bulletins on it. After stalling over the area, the storm moved southeastwards over the Coral Sea, where it continued to develop under favorable conditions. The system was finally upgraded to Tropical Cyclone Ruby two days later as gale-force winds encircled its eastern portions.