Tropical Cyclone Alfred
● 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).
Alfred at 2017-02-15 14:00:00 (BeijingTime) 在South Pacific首次被记录, peak intensity 为Category 1 Tropical Cyclone , max wind 约 25.7 m/s (1 分钟平均) , minimum central pressure 987 hPa, at 2017-02-22 20:00:00前后结束, total 记录 30 track points (6 h一个) . 曾Landfall或贴近land.
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 2017-02-15 14:00 | -17.0°S, 137.1°E | Tropical Depression | 8.2 | 1002 |
| 2017-02-16 02:00 | -15.9°S, 138.0°E | Tropical Depression | 8.2 | 1002 |
| 2017-02-16 14:00 | -16.1°S, 139.6°E | Tropical Depression | 15.4 | 1001 |
| 2017-02-17 02:00 | -16.6°S, 139.2°E | Tropical Depression | 18 | 994 |
| 2017-02-17 14:00 | -16.9°S, 138.2°E | Tropical Depression | 15.4 | 999 |
| 2017-02-18 02:00 | -16.6°S, 136.8°E | Tropical Depression | 10.3 | 1002 |
| 2017-02-18 14:00 | -16.0°S, 136.0°E | Tropical Depression | 10.3 | 1001 |
| 2017-02-19 02:00 | -15.4°S, 136.1°E | Tropical Depression | 10.3 | 1001 |
| 2017-02-19 14:00 | -14.8°S, 136.1°E | Tropical Depression | 15.4 | 996 |
| 2017-02-20 02:00 | -15.0°S, 136.8°E | Category 1 Tropical Cyclone | 20.6 | 993 |
| 2017-02-20 14:00 | -15.8°S, 137.3°E | Category 1 Tropical Cyclone | 25.7 | 987 |
| 2017-02-21 02:00 | -15.5°S, 137.8°E | Tropical Depression | 18 | 999 |
| 2017-02-21 14:00 | -16.8°S, 137.9°E | Tropical Depression | 12.9 | 1004 |
| 2017-02-22 02:00 | -16.3°S, 137.7°E | Tropical Depression | 16.5 | 1004 |
| 2017-02-22 14:00 | -16.8°S, 138.3°E | Tropical Depression | 13.9 | 1005 |
| 2017-02-22 20:00 | -17.0°S, 138.2°E | Tropical Depression | 13.9 | 1007 |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010); code 2017046S17137 / SH062017. There is no official Chinese name for this system, so the original English name is used. Intensity categories follow the classifications of the local agency in the region, converted from 1-minute sustained winds using the WMO factor, and are for reference only. Data notes · Incorrect translation?
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