Tropical Cyclone Jacob
● 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).
Jacob at 1985-02-15 08:00:00 (BeijingTime) 在South Indian Ocean首次被记录, peak intensity 为Category 3 tropical cyclone , max wind 约 38.6 m/s (1 分钟平均) , minimum central pressure 950 hPa, at 1985-02-28 08:00:00前后结束, total 记录 53 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1985-02-15 08:00 | -9.0°S, 127.6°E | Tropical Depression | 13.9 | 1003 |
| 1985-02-16 02:00 | -11.7°S, 126.7°E | Tropical Depression | 13.9 | 1000 |
| 1985-02-16 20:00 | -12.6°S, 124.2°E | Tropical Depression | 12.9 | 997 |
| 1985-02-17 14:00 | -13.3°S, 121.1°E | Tropical Depression | 12.9 | 992 |
| 1985-02-18 08:00 | -14.1°S, 118.8°E | Tropical Depression | 15.4 | 984 |
| 1985-02-19 02:00 | -14.9°S, 116.8°E | Tropical Depression | 18 | 966 |
| 1985-02-19 20:00 | -15.2°S, 114.7°E | Category 1 Tropical Cyclone | 25.7 | 953 |
| 1985-02-20 14:00 | -15.6°S, 112.2°E | Category 2 Tropical Cyclone | 33.4 | 950 |
| 1985-02-21 08:00 | -15.9°S, 110.0°E | Category 3 tropical cyclone | 36 | 952 |
| 1985-02-22 02:00 | -16.3°S, 106.5°E | Category 2 Tropical Cyclone | 30.9 | 953 |
| 1985-02-22 20:00 | -17.8°S, 103.4°E | Category 2 Tropical Cyclone | 28.3 | 955 |
| 1985-02-23 14:00 | -19.3°S, 101.4°E | Category 2 Tropical Cyclone | 28.3 | 957 |
| 1985-02-24 08:00 | -21.8°S, 98.6°E | Category 2 Tropical Cyclone | 28.3 | 960 |
| 1985-02-25 02:00 | -24.9°S, 95.9°E | Category 1 Tropical Cyclone | 25.7 | 970 |
| 1985-02-25 20:00 | -28.8°S, 95.5°E | Category 1 Tropical Cyclone | 25.7 | 982 |
| 1985-02-26 14:00 | -34.1°S, 97.4°E | Category 1 Tropical Cyclone | 23.1 | 992 |
| 1985-02-27 08:00 | -37.4°S, 101.7°E | Category 1 Tropical Cyclone | 19.5 | 996 |
| 1985-02-28 02:00 | -39.2°S, 108.4°E | Tropical Depression | 13.9 | 999 |
| 1985-02-28 08:00 | -39.2°S, 111.4°E | Tropical Depression | 13.9 | 1002 |
Data sources: NOAA National Environmental Information Center IBTrACS v04r01 (Knapp et al., 2010), code 1985046S09128 / SH241985. No official Chinese name is available for this basin, so the original English name is used. Intensity categories follow the classifications of the relevant local meteorological agencies, converted from 1-minute sustained winds using WMO factors, and are for reference only. Data notes · Incorrect translation?
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