Tropical Cyclone Drena
● Data reliability: ReliableWeather satellites monitored it throughout, so its track and intensity are relatively accurate (Atlantic and E. Pacific since 1966, other basins since 1980).
Drena at 1985-01-09 08:00:00 (BeijingTime) 在South Pacific首次被记录, peak intensity 为Category 1 Tropical Cyclone , max wind 约 25.7 m/s (1 分钟平均) , minimum central pressure 987 hPa, at 1985-01-16 08:00:00前后结束, total 记录 29 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1985-01-09 08:00 | -11.8°S, 178.0°W | Tropical Depression | 16.5 | 997 |
| 1985-01-09 20:00 | -11.9°S, 177.8°W | Tropical Depression | 16.5 | 997 |
| 1985-01-10 08:00 | -11.8°S, 175.7°W | Tropical Depression | 12.9 | 997 |
| 1985-01-10 20:00 | -12.0°S, 175.2°W | Tropical Depression | 15.4 | 995 |
| 1985-01-11 08:00 | -12.7°S, 174.8°W | Tropical Depression | 18 | 990 |
| 1985-01-11 20:00 | -14.5°S, 174.4°W | Category 1 Tropical Cyclone | 20.6 | 987 |
| 1985-01-12 08:00 | -16.1°S, 174.1°W | Category 1 Tropical Cyclone | 23.1 | 987 |
| 1985-01-12 20:00 | -17.2°S, 173.7°W | Category 1 Tropical Cyclone | 25.7 | 990 |
| 1985-01-13 08:00 | -18.0°S, 173.0°W | Category 1 Tropical Cyclone | 23.1 | 995 |
| 1985-01-13 20:00 | -18.8°S, 172.3°W | Category 1 Tropical Cyclone | 20.6 | 997 |
| 1985-01-14 08:00 | -19.4°S, 171.0°W | Tropical Depression | 15.4 | 997 |
| 1985-01-14 20:00 | -19.0°S, 169.5°W | Tropical Depression | 16.5 | 997 |
| 1985-01-15 08:00 | -19.1°S, 168.0°W | Tropical Depression | 16.5 | 997 |
| 1985-01-15 20:00 | -19.2°S, 166.3°W | Tropical Depression | 16.5 | 997 |
| 1985-01-16 08:00 | -20.0°S, 163.0°W | Tropical Depression | 16.5 | 997 |
Data sources: NOAA National Environmental Information Center IBTrACS v04r01 (Knapp et al., 2010), code 1985009S12182 / SH091985. No official Chinese name is available for this system; the original English name is used. Intensity categories follow the classifications of the local agency in the region, converted from 1-minute sustained wind using the WMO factor, and are for reference only. Data notes · Incorrect translation?
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