1999North Indian Ocean未命名气旋
● 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 1999-12-08 14:00:00 (BeijingTime) 在North Indian Ocean首次被记录, peak intensity 为Depressions, max wind 约 13.4 m/s (1 分钟平均) , minimum central pressure 998 hPa, at 1999-12-10 14:00:00前后结束, total 记录 9 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1999-12-08 14:00 | 9.5°N, 88.5°E | Depressions | 8.2 | 1000 |
| 1999-12-08 20:00 | 10.6°N, 87.5°E | Tropical Cyclone | - | - |
| 1999-12-09 02:00 | 10.5°N, 87.0°E | Depressions | 13.4 | 998 |
| 1999-12-09 08:00 | 10.5°N, 86.3°E | Tropical Cyclone | - | - |
| 1999-12-09 14:00 | 10.5°N, 85.0°E | Depressions | 13.4 | 998 |
| 1999-12-09 20:00 | 10.5°N, 85.0°E | Depressions | 13.4 | 998 |
| 1999-12-10 02:00 | 10.5°N, 85.0°E | Depressions | 13.4 | 998 |
| 1999-12-10 08:00 | 11.0°N, 84.5°E | Depressions | 13.4 | 998 |
| 1999-12-10 14:00 | 11.0°N, 84.0°E | Depressions | 13.4 | 998 |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 1999342N10089. There is no official Chinese translation for this system, so the original English name is displayed. The intensity category follows the local agency classification for the region, converted from 1-minute sustained wind using the WMO factor, for reference only. Data notes · Incorrect translation?
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