Tropical Cyclone Alison
● 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).
Alison at 1998-11-06 14:00:00 (BeijingTime) 在South Indian Ocean首次被记录, peak intensity 为Category 3 tropical cyclone , max wind 约 36 m/s (1 分钟平均) , minimum central pressure 955 hPa, at 1998-11-13 14:00:00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 |
|---|
| 1998-11-06 14:00 | -9.9°S, 96.3°E | Tropical Depression | 7.7 | - |
| 1998-11-07 02:00 | -10.2°S, 97.3°E | Tropical Depression | 10.3 | - |
| 1998-11-07 14:00 | -10.2°S, 98.5°E | Tropical Depression | 12.9 | 1000 |
| 1998-11-08 02:00 | -10.6°S, 99.4°E | Tropical Depression | 12.9 | 996 |
| 1998-11-08 14:00 | -11.5°S, 99.0°E | Tropical Depression | 12.9 | 990 |
| 1998-11-09 02:00 | -12.8°S, 97.5°E | Category 2 Tropical Cyclone | 28.3 | 971 |
| 1998-11-09 14:00 | -13.6°S, 96.1°E | Category 2 Tropical Cyclone | 28.3 | 956 |
| 1998-11-10 02:00 | -14.6°S, 94.6°E | Category 3 tropical cyclone | 36 | 960 |
| 1998-11-10 14:00 | -15.6°S, 93.4°E | Category 3 tropical cyclone | 36 | 965 |
| 1998-11-11 02:00 | -16.7°S, 92.6°E | Category 3 tropical cyclone | 36 | 975 |
| 1998-11-11 14:00 | -17.7°S, 92.0°E | Category 2 Tropical Cyclone | 33.4 | 980 |
| 1998-11-12 02:00 | -18.9°S, 91.7°E | Category 2 Tropical Cyclone | 30.9 | 985 |
| 1998-11-12 14:00 | -19.0°S, 91.1°E | Category 2 Tropical Cyclone | 28.3 | 995 |
| 1998-11-13 02:00 | -18.3°S, 90.7°E | Category 1 Tropical Cyclone | 25.7 | 1000 |
| 1998-11-13 14:00 | -16.6°S, 89.9°E | Tropical Cyclone | - | - |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 1998310S10096 / SH041999. This basin has no official Chinese name, so the English name is used. Intensity categories follow the local agency classification for the basin, converted from 1-minute sustained winds using the WMO factor, and are provided for reference only. Data notes · Incorrect translation?
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