Unnamed system
2020-21 season · AU202021_21U
History
Tropical Low 21U developed in the Australian region and was monitored by the Bureau of Meteorology, though it did not reach tropical cyclone intensity. The system remained a tropical low throughout its lifetime, failing to organise sufficiently to be classified as a named cyclone. As a tropical low, it would have been characterised by a closed circulation and associated convective activity, but without the sustained wind speeds required for cyclone status.
The available BOM records for this system are limited in detail regarding specific formation location, dates, and any impacts the low may have produced. Tropical lows of this nature can still bring significant rainfall and gusty winds to coastal and inland areas they affect, though any specific damage or casualty figures for 21U are not documented in the available material.
Sources: Bureau of Meteorology report
View full track data (28 observations)
| Date/Time (UTC) | Category | Position | Pressure | Wind |
|---|---|---|---|---|
| 2021-03-20 00:00:00 | 1 | -12.1, 97.2 | 1004 hPa | 8 km/h |
| 2021-03-20 06:00:00 | 1 | -12.2, 96.7 | 1004 hPa | 8 km/h |
| 2021-03-20 12:00:00 | 1 | -12.1, 96.2 | 1004 hPa | 8 km/h |
| 2021-03-20 18:00:00 | 1 | -11.6, 95.8 | 1004 hPa | 10 km/h |
| 2021-03-21 00:00:00 | 1 | -11.7, 95.4 | 1004 hPa | 10 km/h |
| 2021-03-21 06:00:00 | 1 | -12.1, 95.0 | 1004 hPa | 10 km/h |
| 2021-03-21 12:00:00 | 1 | -12.2, 94.3 | 1004 hPa | 10 km/h |
| 2021-03-21 18:00:00 | 1 | -12.3, 93.7 | 1003 hPa | 13 km/h |
| 2021-03-22 00:00:00 | 1 | -12.3, 93.3 | 1003 hPa | 13 km/h |
| 2021-03-22 06:00:00 | 1 | -12.2, 93.2 | 1003 hPa | 15 km/h |
| 2021-03-22 12:00:00 | 1 | -12.3, 92.8 | 1000 hPa | 18 km/h |
| 2021-03-22 18:00:00 | 1 | -12.8, 92.2 | 1000 hPa | 18 km/h |
| 2021-03-23 00:00:00 | 1 | -12.5, 92.0 | 1000 hPa | 18 km/h |
| 2021-03-23 06:00:00 | 1 | -12.5, 92.0 | 1000 hPa | 18 km/h |
| 2021-03-23 12:00:00 | 1 | -12.4, 91.8 | 1002 hPa | 15 km/h |
| 2021-03-23 18:00:00 | 1 | -12.2, 91.8 | 1003 hPa | 15 km/h |
| 2021-03-24 00:00:00 | 1 | -11.9, 91.5 | 1003 hPa | 15 km/h |
| 2021-03-24 06:00:00 | 1 | -11.9, 91.7 | 1003 hPa | 15 km/h |
| 2021-03-24 12:00:00 | 1 | -11.8, 91.6 | 1003 hPa | 15 km/h |
| 2021-03-24 18:00:00 | 1 | -11.6, 92.1 | 1004 hPa | 15 km/h |
| 2021-03-25 00:00:00 | 1 | -11.3, 91.9 | 1004 hPa | 13 km/h |
| 2021-03-25 06:00:00 | 1 | -11.8, 91.5 | 1004 hPa | 10 km/h |
| 2021-03-25 12:00:00 | 1 | -11.6, 92.1 | 1004 hPa | 10 km/h |
| 2021-03-25 18:00:00 | 1 | -11.3, 91.6 | 1004 hPa | 10 km/h |
| 2021-03-26 00:00:00 | 1 | -11.0, 91.1 | 1004 hPa | 10 km/h |
| 2021-03-26 06:00:00 | 1 | -10.9, 90.8 | 1004 hPa | 10 km/h |
| 2021-03-26 12:00:00 | 1 | -10.6, 90.6 | 1004 hPa | 10 km/h |
| 2021-03-26 18:00:00 | 1 | -10.2, 90.0 | 1004 hPa | 10 km/h |