1990South Indian Ocean未命名Tropical Cyclone
● 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).
未命名 at 1990-11-30 02:00:00 (BeijingTime) 在South Indian Ocean首次被记录, peak intensity 为Severe Tropical Storm, max wind 约 28.3 m/s (1 分钟平均) , minimum central pressure 997 hPa, at 1990-12-07 14:00:00前后结束, total 记录 31 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1990-11-30 02:00 | -8.0°S, 78.0°E | Tropical Disturbance | 7.7 | - |
| 1990-11-30 14:00 | -9.0°S, 76.3°E | Tropical Disturbance | 12.9 | 1004 |
| 1990-12-01 02:00 | -9.7°S, 76.3°E | Tropical Disturbance | 12.9 | 1004 |
| 1990-12-01 14:00 | -10.4°S, 76.3°E | Tropical Disturbance | 12.9 | 1002 |
| 1990-12-02 02:00 | -11.2°S, 75.7°E | Tropical Disturbance | 12.9 | 1000 |
| 1990-12-02 14:00 | -12.3°S, 76.0°E | Tropical Disturbance | 12.9 | 997 |
| 1990-12-03 02:00 | -13.6°S, 77.4°E | Tropical Disturbance | 15.4 | 997 |
| 1990-12-03 14:00 | -14.9°S, 79.5°E | Severe Tropical Storm | 28.3 | 997 |
| 1990-12-04 02:00 | -16.0°S, 80.6°E | Moderate Tropical Storm | 23.1 | - |
| 1990-12-04 14:00 | -17.1°S, 81.4°E | Tropical Disturbance | 15.4 | - |
| 1990-12-05 02:00 | -18.4°S, 81.9°E | Tropical Cyclone | - | - |
| 1990-12-05 14:00 | -19.3°S, 82.6°E | Tropical Cyclone | - | - |
| 1990-12-06 02:00 | -20.7°S, 83.0°E | Tropical Cyclone | - | - |
| 1990-12-06 14:00 | -22.8°S, 83.2°E | Tropical Cyclone | - | - |
| 1990-12-07 02:00 | -24.3°S, 81.7°E | Tropical Cyclone | - | - |
| 1990-12-07 14:00 | -25.1°S, 79.6°E | Tropical Disturbance | - | - |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010); code 1990334S08078 / SH041991. There is no official Chinese name for this system, so the original English designation is used. Intensity categories follow the classifications of the local agency in the region, converted from 1-minute sustained winds using the WMO scale, for reference only. Data notes · Incorrect translation?
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