Unnamed system

2019-20 season ยท AU201920_09U

Category 3

History

Tropical Low 09U developed in the Australian region and was monitored by the Bureau of Meteorology. Based on the available source material, the system was classified as a tropical low, meaning it did not reach tropical cyclone intensity during its lifetime. The low tracked through the region while being observed by BOM forecasters, though it did not achieve the sustained wind speeds required for formal cyclone categorisation.

As a tropical low, 09U would have produced areas of cloud, rainfall, and gusty winds in its vicinity. Such systems can still contribute to significant rainfall totals and localised flooding in affected areas, particularly across coastal and inland regions of northern Australia. However, the system did not make landfall as a named tropical cyclone, and no major cyclone-related damage or casualties were attributed to it reaching cyclone strength.

Tropical lows of this type are a routine feature of the Australian tropical wet season, often forming in the monsoon trough and either dissipating without intensification or occasionally developing into named cyclones. In this case, 09U remained below the cyclone threshold throughout its observed lifetime.

Sources: Bureau of Meteorology report

View full track data (19 observations)
Date/Time (UTC)CategoryPositionPressureWind
2020-03-09 00:00:00 1 -11.0, 113.0 1008 hPa 13 km/h
2020-03-09 06:00:00 1 -11.2, 113.0 1007 hPa 13 km/h
2020-03-09 12:00:00 1 -10.8, 113.8 1007 hPa 13 km/h
2020-03-09 18:00:00 1 -11.2, 114.7 1005 hPa 13 km/h
2020-03-10 00:00:00 1 -12.2, 116.0 1003 hPa 10 km/h
2020-03-10 06:00:00 1 -13.0, 116.0 1003 hPa 10 km/h
2020-03-10 12:00:00 1 -13.8, 116.5 1000 hPa 15 km/h
2020-03-10 18:00:00 1 -14.6, 116.8 999 hPa 18 km/h
2020-03-11 00:00:00 1 -15.4, 117.2 999 hPa 18 km/h
2020-03-11 06:00:00 1 -16.4, 116.9 999 hPa 18 km/h
2020-03-11 12:00:00 1 -17.3, 116.1 999 hPa 18 km/h
2020-03-11 18:00:00 1 -18.2, 115.9 999 hPa 18 km/h
2020-03-12 00:00:00 1 -18.9, 115.1 997 hPa 21 km/h
2020-03-12 06:00:00 1 -19.8, 114.9 997 hPa 21 km/h
2020-03-12 12:00:00 1 -20.8, 114.8 995 hPa 23 km/h
2020-03-12 18:00:00 3 -22.0, 114.5 997 hPa 21 km/h
2020-03-13 00:00:00 2 -22.8, 114.4 1000 hPa 18 km/h
2020-03-13 06:00:00 2 -23.8, 114.5 1005 hPa 13 km/h
2020-03-14 00:00:00 2 -26.9, 114.7 1005 hPa 10 km/h