EMMA
1984-85 season · AU198485_01U
History
Severe Tropical Cyclone Emma formed during the 1984–85 Australian cyclone season and reached a peak intensity of Category 3 on the Australian scale. The system made landfall on the coast of Western Australia on 12 December 1984, doing so at the reduced strength of a Category 1 cyclone. Beyond the landfall itself, detailed records of the storm's origins, precise track, and the extent of any damage or casualties it caused are sparse in available sources. What is established is that Emma was one of several significant cyclones to affect the Australian region during a notably active season that ran from November 1984 through April 1985, a period that also produced severe systems such as Frank, Lindsay, Sandy, and Margot. Emma's relatively weakened state at the time of landfall, having dropped two categories from its peak, suggests that some degree of weakening occurred prior to reaching the coast, though the specific meteorological circumstances behind that intensity change are not detailed in available records.
Sources: Bureau of Meteorology report Wikipedia
View full track data (44 observations)
| Date/Time (UTC) | Category | Position | Pressure | Wind |
|---|---|---|---|---|
| 1984-12-03 18:00:00 | 1 | -5.3, 102.0 | 1006 hPa | 10 km/h |
| 1984-12-04 00:00:00 | 1 | -5.3, 101.0 | 1004 hPa | 10 km/h |
| 1984-12-04 06:00:00 | 1 | -5.5, 100.0 | 1003 hPa | 13 km/h |
| 1984-12-04 12:00:00 | 1 | -5.8, 99.1 | 1001 hPa | 13 km/h |
| 1984-12-04 18:00:00 | 1 | -6.2, 98.5 | 999 hPa | 13 km/h |
| 1984-12-05 00:00:00 | 1 | -6.7, 98.1 | 997 hPa | 15 km/h |
| 1984-12-05 06:00:00 | 1 | -7.2, 98.0 | 997 hPa | 15 km/h |
| 1984-12-05 12:00:00 | 1 | -7.5, 98.0 | 996 hPa | 15 km/h |
| 1984-12-05 18:00:00 | 1 | -7.7, 98.1 | 996 hPa | 15 km/h |
| 1984-12-06 00:00:00 | 1 | -8.0, 98.2 | 995 hPa | 15 km/h |
| 1984-12-06 06:00:00 | 1 | -8.2, 98.3 | 995 hPa | 15 km/h |
| 1984-12-06 12:00:00 | 1 | -8.4, 98.6 | 995 hPa | 15 km/h |
| 1984-12-06 18:00:00 | 1 | -8.6, 98.9 | 994 hPa | 18 km/h |
| 1984-12-07 00:00:00 | 1 | -8.7, 99.1 | 993 hPa | 18 km/h |
| 1984-12-07 06:00:00 | 1 | -8.9, 99.3 | 992 hPa | 21 km/h |
| 1984-12-07 12:00:00 | 1 | -9.2, 99.6 | 991 hPa | 21 km/h |
| 1984-12-07 18:00:00 | 1 | -9.5, 99.9 | 990 hPa | 21 km/h |
| 1984-12-08 00:00:00 | 1 | -9.6, 100.1 | 989 hPa | 21 km/h |
| 1984-12-08 06:00:00 | 1 | -9.8, 100.4 | 988 hPa | 21 km/h |
| 1984-12-08 12:00:00 | 1 | -10.2, 100.8 | 986 hPa | 23 km/h |
| 1984-12-08 18:00:00 | 1 | -10.4, 101.5 | 984 hPa | 26 km/h |
| 1984-12-09 00:00:00 | 1 | -10.9, 102.1 | 981 hPa | 26 km/h |
| 1984-12-09 06:00:00 | 1 | -11.3, 103.1 | 979 hPa | 26 km/h |
| 1984-12-09 12:00:00 | 1 | -11.5, 103.6 | 978 hPa | 26 km/h |
| 1984-12-09 18:00:00 | 1 | -11.9, 104.2 | 975 hPa | 28 km/h |
| 1984-12-10 00:00:00 | 1 | -12.4, 105.0 | 973 hPa | 31 km/h |
| 1984-12-10 06:00:00 | 1 | -13.0, 105.8 | 971 hPa | 31 km/h |
| 1984-12-10 12:00:00 | 1 | -13.6, 106.6 | 969 hPa | 33 km/h |
| 1984-12-10 18:00:00 | 1 | -14.2, 107.5 | 967 hPa | 33 km/h |
| 1984-12-11 00:00:00 | 1 | -14.6, 108.3 | 967 hPa | 33 km/h |
| 1984-12-11 06:00:00 | 1 | -15.5, 109.3 | 969 hPa | 33 km/h |
| 1984-12-11 12:00:00 | 1 | -16.6, 110.7 | 973 hPa | 31 km/h |
| 1984-12-11 15:00:00 | 1 | -17.2, 111.6 | 976 hPa | 31 km/h |
| 1984-12-11 18:00:00 | 1 | -17.8, 112.2 | 978 hPa | 28 km/h |
| 1984-12-11 21:00:00 | 1 | -18.3, 113.3 | 981 hPa | 28 km/h |
| 1984-12-12 00:00:00 | 1 | -19.0, 114.3 | 984 hPa | 26 km/h |
| 1984-12-12 03:00:00 | 1 | -19.5, 115.1 | 987 hPa | 23 km/h |
| 1984-12-12 06:00:00 | 1 | -20.0, 115.8 | 991 hPa | 21 km/h |
| 1984-12-12 09:00:00 | 1 | -20.6, 116.1 | 995 hPa | 15 km/h |
| 1984-12-12 12:00:00 | 3 | -21.2, 116.8 | 996 hPa | 15 km/h |
| 1984-12-12 15:00:00 | 2 | -21.6, 117.2 | 996 hPa | 13 km/h |
| 1984-12-12 18:00:00 | 2 | -21.7, 117.9 | 996 hPa | 13 km/h |
| 1984-12-13 00:00:00 | 2 | -21.9, 119.8 | 998 hPa | 10 km/h |
| 1984-12-13 06:00:00 | 2 | -21.9, 119.8 | 998 hPa | 10 km/h |