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 1999-01-30 20:00:00 (BeijingTime) 在North Indian Ocean首次被记录, peak intensity 为The Cyclone Storm, max wind 约 20.6 m/s (1 分钟平均) , minimum central pressure 998 hPa, at 1999-02-05 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 |
|---|
| 1999-01-30 20:00 | 7.7°N, 92.0°E | Depressions | 10.3 | - |
| 1999-01-31 02:00 | 8.0°N, 91.8°E | Depressions | 12.9 | - |
| 1999-01-31 08:00 | 8.3°N, 91.2°E | Depressions | 12.9 | - |
| 1999-01-31 14:00 | 8.4°N, 90.6°E | Depressions | 12.9 | - |
| 1999-01-31 20:00 | 8.4°N, 90.0°E | Depressions | 12.9 | - |
| 1999-02-01 02:00 | 8.3°N, 89.2°E | Depressions | 12.9 | - |
| 1999-02-01 08:00 | 8.1°N, 88.5°E | Depressions | 12.9 | - |
| 1999-02-01 14:00 | 8.4°N, 88.0°E | Depressions | 12.9 | - |
| 1999-02-01 20:00 | 8.6°N, 87.5°E | Depressions | 12.9 | 1004 |
| 1999-02-02 02:00 | 8.9°N, 86.8°E | Depressions | 12.9 | - |
| 1999-02-02 08:00 | 9.3°N, 86.1°E | Depressions | 12.9 | - |
| 1999-02-02 14:00 | 9.6°N, 85.4°E | Deep Depression | 18 | 1006 |
| 1999-02-02 20:00 | 10.0°N, 85.0°E | Deep Depression | 18 | 1004 |
| 1999-02-03 02:00 | 10.7°N, 84.9°E | Deep Depression | 18 | 1002 |
| 1999-02-03 08:00 | 11.1°N, 85.3°E | Deep Depression | 18 | 998 |
| 1999-02-03 14:00 | 11.4°N, 85.3°E | The Cyclone Storm | 20.6 | 1002 |
| 1999-02-03 20:00 | 11.4°N, 85.3°E | The Cyclone Storm | 20.6 | 1004 |
| 1999-02-04 02:00 | 11.3°N, 84.7°E | Deep Depression | 18 | 1008 |
| 1999-02-04 08:00 | 11.3°N, 84.2°E | Deep Depression | 18 | - |
| 1999-02-04 14:00 | 11.5°N, 84.1°E | Deep Depression | 18 | - |
| 1999-02-04 20:00 | 11.8°N, 84.0°E | Depressions | 12.9 | - |
| 1999-02-05 02:00 | 12.0°N, 84.0°E | Deep Depression | 15.4 | - |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 1999031N08092 / IO011999. This basin has no official Chinese name, so the original English name is used. Intensity grades follow the classifications of local agencies in the basin, converted from 1-minute sustained winds using WMO coefficients, and are for reference only. Data notes · Incorrect translation?
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