Unnamed 1998 South Indian Ocean 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 1998-09-27 20:00:00 (BeijingTime) 在South Indian Ocean首次被记录, peak intensity 为Tropical Depression, max wind 约 18 m/s (1 分钟平均) , at 1998-10-03 02:00:00前后结束, total 记录 22 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1998-09-27 20:00 | -5.4°S, 83.8°E | Tropical Disturbance | 12.9 | - |
| 1998-09-28 02:00 | -5.4°S, 83.2°E | Tropical Disturbance | 12.9 | - |
| 1998-09-28 08:00 | -5.7°S, 82.7°E | Tropical Disturbance | 12.9 | - |
| 1998-09-28 14:00 | -6.2°S, 81.7°E | Tropical Disturbance | 12.9 | - |
| 1998-09-28 20:00 | -7.4°S, 80.7°E | Tropical Disturbance | 12.9 | - |
| 1998-09-29 02:00 | -8.0°S, 79.6°E | Tropical Disturbance | 12.9 | - |
| 1998-09-29 08:00 | -8.3°S, 79.0°E | Tropical Disturbance | 15.4 | - |
| 1998-09-29 14:00 | -8.6°S, 78.4°E | Tropical Depression | 18 | - |
| 1998-09-29 20:00 | -8.8°S, 77.9°E | Tropical Depression | 18 | - |
| 1998-09-30 02:00 | -9.0°S, 77.5°E | Tropical Depression | 18 | - |
| 1998-09-30 08:00 | -9.3°S, 77.0°E | Tropical Disturbance | 15.4 | - |
| 1998-09-30 14:00 | -9.7°S, 76.3°E | Tropical Disturbance | 15.4 | - |
| 1998-09-30 20:00 | -10.1°S, 75.3°E | Tropical Disturbance | 15.4 | - |
| 1998-10-01 02:00 | -10.6°S, 74.4°E | Tropical Disturbance | 15.4 | - |
| 1998-10-01 08:00 | -11.2°S, 73.4°E | Tropical Disturbance | 15.4 | - |
| 1998-10-01 14:00 | -12.1°S, 72.3°E | Tropical Depression | 18 | - |
| 1998-10-01 20:00 | -12.9°S, 71.4°E | Tropical Disturbance | 15.4 | - |
| 1998-10-02 02:00 | -14.0°S, 70.7°E | Tropical Disturbance | 15.4 | - |
| 1998-10-02 08:00 | -15.0°S, 70.2°E | Tropical Disturbance | 15.4 | - |
| 1998-10-02 14:00 | -15.4°S, 70.1°E | Tropical Disturbance | 15.4 | - |
| 1998-10-02 20:00 | -15.9°S, 70.0°E | Tropical Disturbance | 12.9 | - |
| 1998-10-03 02:00 | -16.2°S, 69.7°E | Tropical Disturbance | 10.3 | - |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), ID 1998271S05084 / SH021999. This basin has no official Chinese name; the original English name is displayed. Intensity classification follows local agency standards for the basin (converted from 1-minute sustained winds using WMO coefficients) and is for reference only. Data notes · Incorrect translation?
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