Unnamed Tropical Cyclone in the South Indian Ocean, 1990
● 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 1990-10-15 14:00:00 (BeijingTime) 在South Indian Ocean首次被记录, peak intensity 为Tropical Disturbance, max wind 约 15.4 m/s (1 分钟平均) , at 1990-10-20 14:00:00前后结束, total 记录 21 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1990-10-15 14:00 | -7.8°S, 73.7°E | Tropical Disturbance | 10.3 | - |
| 1990-10-15 20:00 | -8.7°S, 72.9°E | Tropical Disturbance | 10.3 | - |
| 1990-10-16 02:00 | -9.0°S, 72.3°E | Tropical Disturbance | 10.3 | - |
| 1990-10-16 08:00 | -8.8°S, 72.3°E | Tropical Disturbance | 12.9 | - |
| 1990-10-16 14:00 | -8.3°S, 72.6°E | Tropical Disturbance | 12.9 | - |
| 1990-10-16 20:00 | -8.2°S, 72.7°E | Tropical Disturbance | 12.9 | - |
| 1990-10-17 02:00 | -8.1°S, 72.7°E | Tropical Disturbance | 15.4 | - |
| 1990-10-17 08:00 | -7.8°S, 72.8°E | Tropical Disturbance | 15.4 | - |
| 1990-10-17 14:00 | -7.4°S, 72.8°E | Tropical Disturbance | 15.4 | - |
| 1990-10-17 20:00 | -7.2°S, 72.4°E | Tropical Disturbance | 15.4 | - |
| 1990-10-18 02:00 | -7.1°S, 71.9°E | Tropical Disturbance | 15.4 | - |
| 1990-10-18 08:00 | -7.0°S, 71.4°E | Tropical Disturbance | 15.4 | - |
| 1990-10-18 14:00 | -7.0°S, 71.0°E | Tropical Disturbance | 15.4 | - |
| 1990-10-18 20:00 | -6.9°S, 70.7°E | Tropical Disturbance | 15.4 | - |
| 1990-10-19 02:00 | -6.8°S, 70.4°E | Tropical Disturbance | 15.4 | - |
| 1990-10-19 08:00 | -6.7°S, 70.1°E | Tropical Disturbance | 15.4 | - |
| 1990-10-19 14:00 | -6.7°S, 69.8°E | Tropical Disturbance | 12.9 | - |
| 1990-10-19 20:00 | -6.8°S, 69.5°E | Tropical Disturbance | 12.9 | - |
| 1990-10-20 02:00 | -6.9°S, 69.2°E | Tropical Disturbance | 12.9 | - |
| 1990-10-20 08:00 | -7.0°S, 68.9°E | Tropical Disturbance | 10.3 | - |
| 1990-10-20 14:00 | -7.2°S, 68.5°E | Tropical Disturbance | 10.3 | - |
Data sources: NOAA National Environmental Information Center IBTrACS v04r01 (Knapp et al., 2010), code 1990288S08074 / SH021991. No official Chinese name is available for this system, so the original English name is used. Intensity grades follow the classifications of the relevant regional agency (converted from 1-minute sustained winds using the WMO factor), for reference only. Data notes · Incorrect translation?
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