Tropical Cyclone Alex
● 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).
Alex at 1990-03-14 20:00:00 (BeijingTime) 在South Indian Ocean首次被记录, peak intensity 为Category 5 Tropical Cyclone , max wind 约 66.9 m/s (1 分钟平均) , minimum central pressure 927 hPa, at 1990-03-26 08:00:00前后结束, total 记录 47 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1990-03-14 20:00 | -11.8°S, 115.2°E | Tropical Depression | 10.3 | - |
| 1990-03-15 08:00 | -12.3°S, 113.4°E | Tropical Depression | 10.3 | 1002 |
| 1990-03-15 20:00 | -12.4°S, 112.8°E | Tropical Depression | 12.9 | 1000 |
| 1990-03-16 08:00 | -12.5°S, 112.1°E | Tropical Depression | 15.4 | 998 |
| 1990-03-16 20:00 | -12.7°S, 111.0°E | Category 1 Tropical Cyclone | 20.6 | 988 |
| 1990-03-17 08:00 | -12.8°S, 110.0°E | Category 2 Tropical Cyclone | 28.3 | 984 |
| 1990-03-17 20:00 | -13.2°S, 109.1°E | Category 3 tropical cyclone | 38.6 | 972 |
| 1990-03-18 08:00 | -13.6°S, 108.1°E | Category 3 tropical cyclone | 41.2 | 952 |
| 1990-03-18 20:00 | -14.7°S, 106.6°E | Category 4 tropical cyclone | 51.4 | 941 |
| 1990-03-19 08:00 | -15.2°S, 104.9°E | Category 4 tropical cyclone | 56.6 | 934 |
| 1990-03-19 20:00 | -16.1°S, 102.2°E | Category 5 Tropical Cyclone | 61.7 | 927 |
| 1990-03-20 08:00 | -16.9°S, 100.4°E | Category 5 Tropical Cyclone | 66.9 | 927 |
| 1990-03-20 20:00 | -18.2°S, 97.7°E | Category 5 Tropical Cyclone | 64.3 | 945 |
| 1990-03-21 08:00 | -19.7°S, 95.3°E | Category 5 Tropical Cyclone | 61.7 | 954 |
| 1990-03-21 20:00 | -21.3°S, 93.1°E | Category 4 tropical cyclone | 56.6 | 966 |
| 1990-03-22 08:00 | -22.4°S, 91.8°E | Category 4 tropical cyclone | 48.9 | 976 |
| 1990-03-22 20:00 | -24.1°S, 91.0°E | Category 3 tropical cyclone | 36 | 984 |
| 1990-03-23 08:00 | -25.7°S, 91.2°E | Category 1 Tropical Cyclone | 25.7 | 991 |
| 1990-03-23 20:00 | -27.3°S, 92.9°E | Category 1 Tropical Cyclone | 20.6 | 997 |
| 1990-03-24 08:00 | -26.9°S, 95.9°E | Tropical Depression | 15.4 | 1000 |
| 1990-03-24 20:00 | -25.5°S, 98.5°E | Tropical Depression | 13.9 | 1003 |
| 1990-03-25 08:00 | -22.0°S, 99.5°E | Tropical Depression | 13.9 | 1004 |
| 1990-03-25 20:00 | -19.4°S, 98.0°E | Tropical Cyclone | - | 1006 |
| 1990-03-26 08:00 | -18.2°S, 94.9°E | Tropical Cyclone | - | 1008 |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 1990074S12115 / SH241990. There is no official Chinese name for this system, so the original English name is used. Categories follow the local agency classification for the region, converted from 1-min sustained wind using the WMO factor, and are for reference only. Data notes · Incorrect translation?
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