Tropical Low 10U

19 - 27 January 2021
Best Track of Tropical Low 10U


A weak tropical low formed to the south of Christmas Island on 19 January in an active phase of the monsoon trough. Gales developed south of the centre on 20 January as the low was steered steadily to the west. On 21 January the low slowed as it approached Cocos Island and a surge in the westerly winds to the north of the low caused a brief period of gales at Cocos Island. The low then moved to the south and gales subsided. The tropical low did not attain tropical cyclone strength.

A strengthening ridge to the south steered the system more to the west on 26 January with gales evident south of the centre before the system crossed 90E and outside the Australian region.

Cocos Island recorded occasional periods of gales on 21 and 22 January and a maximum wind gust of 93 km/h.

Cocos Islands recorded a two-day rainfall total of 242 mm of rainfall, the heaviest of which occurred early on 21 January.

**All information relating to intensity and track is preliminary information based on operational estimates and subject to change following post analysis.**

Extreme values during low event (estimated)

Note that these values may be changed on the receipt of later information

Maximum Category: Tropical Low
Maximum sustained wind speed: 75 km/h
Maximum wind gust: 100 km/h
Lowest central pressure: 994 hPa