Tropical Cyclone Odette

3 - 10 April 2021
Best Track of Tropical Cyclone Odette
All times shows are in Australian Western Standard Time (AWST), that is UTC +8 hours.

A tropical low formed within the monsoon trough well to the west of Christmas Island on 3 April and began tracking southeast. From 5 April It became very slow moving for 48 to 72 hours at which time gale force winds developed on the southwest flank of the low. On 8 April the low began tracking to the northeast. At this time Tropical Cyclone Seroja was located to the east and the two tropical systems began to interact. Conditions became more favourable for development as the low moved to the northeast overnight on 8 April and subsequently it intensified and was named Tropical Cyclone Odette on 9 April at 8am AWST. As the low transitioned to the southeast and then south conditions rapidly deteriorated and Tropical Cyclone Odette weakened. Due to the fast southward movement on 10 April, gale force winds were still observed to the east of the low as it passed well to the west of the Northwest Cape.

Tropical Cyclone Odette was a short-lived cyclone over the Indian Ocean to the northwest of the Western Australian mainland and whilst it threatened the far western parts of the Pilbara, it did not have any significant impacts on the Western Australian mainland. Heavy rainfall was observed at Christmas Island in the overnight period from 3 April into 4 April whilst the tropical low was in the vicinity, with 115.6 millimetres recorded to 9am 4 April. Although Tropical Cyclone Odette did not result in any damage, it was a notable system due to its interaction with Severe Tropical Cyclone Seroja. The two systems interacted with one another as per the Fujiwhara effect (see http://media.bom.gov.au/social/blog/2571/when-cyclones-collide-the-fujiwhara-effect/) which is a rarely observed phenomenon for Australian tropical systems.

Tropical Cyclone Odette was the 8th tropical cyclone in the Australian region for the 2020/2021 season.

 

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

Extreme values during event (estimated)

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


Maximum Category: 1
Maximum sustained wind speed: 83 km/h
Maximum wind gust: 120 km/h
Lowest central pressure: 988 hPa