Tropical Cyclone Aivu
● 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).
Aivu at 1989-03-29 20:00:00 (BeijingTime) 在South Pacific首次被记录, peak intensity 为Category 5 Tropical Cyclone , max wind 约 61.7 m/s (1 分钟平均) , minimum central pressure 935 hPa, at 1989-04-05 20:00:00前后结束, total 记录 29 track points (6 h一个) . 曾Landfall或贴近land.
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1989-03-29 20:00 | -11.4°S, 158.2°E | Tropical Depression | 12.9 | - |
| 1989-03-30 08:00 | -11.2°S, 157.4°E | Tropical Depression | 12.9 | - |
| 1989-03-30 20:00 | -11.1°S, 156.4°E | Tropical Depression | 12.9 | - |
| 1989-03-31 08:00 | -10.8°S, 155.2°E | Tropical Depression | 12.9 | - |
| 1989-03-31 20:00 | -9.9°S, 153.8°E | Tropical Depression | 12.9 | 1000 |
| 1989-04-01 08:00 | -10.3°S, 152.7°E | Tropical Depression | 18 | 995 |
| 1989-04-01 20:00 | -11.9°S, 152.0°E | Category 1 Tropical Cyclone | 23.1 | 989 |
| 1989-04-02 08:00 | -14.1°S, 150.8°E | Category 2 Tropical Cyclone | 30.9 | 984 |
| 1989-04-02 20:00 | -15.6°S, 149.6°E | Category 3 tropical cyclone | 38.6 | 975 |
| 1989-04-03 08:00 | -16.5°S, 149.2°E | Category 4 tropical cyclone | 56.6 | 950 |
| 1989-04-03 20:00 | -17.9°S, 148.8°E | Category 5 Tropical Cyclone | 61.7 | 942 |
| 1989-04-04 08:00 | -19.4°S, 147.7°E | Category 4 tropical cyclone | 51.4 | 955 |
| 1989-04-04 20:00 | -20.4°S, 145.7°E | Category 1 Tropical Cyclone | 23.1 | 993 |
| 1989-04-05 08:00 | -21.8°S, 143.6°E | Tropical Depression | 12.9 | 1000 |
| 1989-04-05 20:00 | -22.0°S, 142.1°E | Tropical Depression | 8.2 | 1003 |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 1989089S11158 / SH231989. This basin has no official Chinese name, so the original English name is used. Intensity categories follow the classifications of the local agency in the region, converted from 1-minute sustained winds using WMO factors, and are for reference only. Data notes · Incorrect translation?
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