The United States' Joint Typhoon Warning Center (JTWC) and other national meteorological services, including Météo-France, also monitored the basin during the season.

[4] The system subsequently made landfall on the Kimberley and degenerated into a deep monsoonal low, remaining slow-moving over north-western Australia for several days.

[16] Despite unfavourable atmospheric conditions in the area, 09U persisted, tracking slowly eastward until it was last noted early on 15 January, located about 900 km (560 mi) to the east of Christmas Island.

[22] Slowly intensifying, 14U reached peak intensity with winds of 85 km/h (55 mph) and a minimum pressure of 988 hPa (mbar; 29.17 inHg), though the system was never classified as a tropical cyclone by BoM due to its asymmetry.

[31] Despite the tropical origins of the system, the thick cloud cover over the area also resulted in records for the coldest February maximum temperatures being broken.

The tropical low remained slow-moving near the southern Gulf of Carpentaria coast for a number of days before moving over open waters on 19 February.

[32] Early on 2 March, TCWC Darwin noted a developing tropical low in the north Arafura Sea,[33] followed promptly by the JTWC that afternoon.

Embedded within a moderate to high wind shear regime, the system was expected to track south or southwest into a more favourable environment over subsequent days.

[35] By 00:00 UTC on 5 March, the low had moved underneath an anticyclone, providing excellent outflow which offset the negative effects from continued wind shear.

[40] Around 03:00 UTC that day, Blanche moved ashore a largely uninhabited region of western Australia, the latest instance of the country's first tropical cyclone landfall for any season on record.

[49] On 21 March, TCWC Perth began monitoring and issuing warnings for a developing tropical low in the Indian Ocean off the Pilbara coast.

[50] The system was forecast to have a moderate chance of reaching Category 1 strength on the Australian tropical cyclone intensity scale on the afternoon of 23 March, prior to landfall.

By early 27 March, Caleb had weakened below cyclone strength due to a combination of dry air and cooler sea surface temperatures.

[54] As favourable atmospheric conditions returned, Debbie underwent a period of rapid intensification, strengthening to a Category 4 severe tropical cyclone in 12 hours.

At the same time, the cyclone's already slow speed reduced to 7 km/h (4.3 mph), causing nearby towns to be subjected to extremely strong winds for many hours.

Ex-Tropical Cyclone Debbie caused widespread damage, especially due to extremely high rainfall totals, as it tracked down the Queensland coast.

[54] The torrential rainfall in the region caused the overflowing of the Pioneer River, and the subsequent need for nearly 100 people to be rescued from floodwaters in western Mackay.

[57] Ex-Tropical Cyclone Debbie moved into the South East Queensland region on the afternoon of 30 March, and caused widespread rainfall of 150 mm (5.9 in) and wind gusts of up to 131 km/h (81 mph).

[63] On the morning of 5 April local time, the Bureau of Meteorology began monitoring a developing tropical low located in the Indian Ocean, approximately 710 km (440 mi) east of Christmas Island.

[64] On the morning of 6 April local time, sustained gales developed on the western side of the system, however it was still classified as a tropical low as the winds did not extend more than halfway around the storm.

[64] As the system turned to the west-southwest, it encountered increased wind shear, dryer air and cooler sea surface temperatures, and began to weaken.

The Bureau of Meteorology issued its final warning regarding the system on the afternoon of 12 April,[68] which, coincidentally, was the time at which it was originally forecast to become a Category 2 cyclone.

The system persisted as a tropical low while tracking west-southwestwards across the Timor Sea and into the Indian Ocean, passing very close to the Kimberley coast in the process.

The low continued to strengthen during 27 April, reaching Category 1 on the Australian tropical cyclone intensity scale at around 4:00 ACST later that afternoon, around 300 km (190 mi) northwest of Darwin, being named Frances in the process.

The system was then classified as a Category 1 tropical cyclone and named Greg by the BoM during 30 April, as it peaked with 10-minute sustained wind speeds of 65 km/h (40 mph).

Ahead of the season starting on 1 November, the Bureau of Meteorology, monitored two weak tropical lows that developed within the central Indian Ocean.

[71] However, during the next day, the chances of the system developing into a tropical cyclone weakened, as a moderate to high amount of vertical wind shear impacted the low.

[74] By 11 November, the JTWC classified it with a "low" chance of developing a tropical cyclone with scattered convection wrapping into its centre as it was located about 620 km (390 mi) to the northwest of the Cocos (Keeling) Islands.

[79][80] A weak tropical low developed to the south of Bali on 4 December, though due to unfavourable conditions the system soon weakened to a low-pressure area.

[15] TCWC Perth continued monitoring the system until 7 January when the tropical low was located over the border of East Pilbara and North Interior.