Tropical Cyclone Alenga
● 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).
Alenga at 2011-12-02 08:00:00 (BeijingTime) 在South Indian Ocean首次被记录, peak intensity 为4级Tropical Cyclone , max wind 约 48.9 m/s (1 分钟平均) , minimum central pressure 972 hPa, at 2011-12-10 08:00:00前后结束, total 记录 33 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 2011-12-02 08:00 | -5.5°S, 98.4°E | Tropical Depression | 8.2 | 1006 |
| 2011-12-02 20:00 | -7.2°S, 97.5°E | Tropical Depression | 7.7 | 1006 |
| 2011-12-03 08:00 | -8.2°S, 96.6°E | Tropical Depression | 10.3 | 1004 |
| 2011-12-03 20:00 | -9.7°S, 95.1°E | Tropical Depression | 12.9 | 1004 |
| 2011-12-04 08:00 | -11.4°S, 92.5°E | Tropical Depression | 15.4 | 1002 |
| 2011-12-04 20:00 | -12.3°S, 89.8°E | Tropical Disturbance | 15.4 | 1001 |
| 2011-12-05 08:00 | -12.2°S, 88.1°E | Moderate Tropical Storm | 20.6 | 997 |
| 2011-12-05 20:00 | -12.2°S, 87.6°E | Moderate Tropical Storm | 25.7 | 995 |
| 2011-12-06 08:00 | -12.7°S, 87.5°E | Moderate Tropical Storm | 23.1 | 995 |
| 2011-12-06 20:00 | -13.5°S, 87.8°E | Moderate Tropical Storm | 23.1 | 997 |
| 2011-12-07 08:00 | -13.9°S, 89.1°E | Severe Tropical Storm | 28.3 | 994 |
| 2011-12-07 20:00 | -14.8°S, 91.5°E | Category 2 Tropical Cyclone | 30.9 | 985 |
| 2011-12-08 08:00 | -16.3°S, 94.9°E | Category 3 tropical cyclone | 46.3 | 975 |
| 2011-12-08 20:00 | -18.5°S, 98.7°E | Category 3 tropical cyclone | 41.2 | 973 |
| 2011-12-09 08:00 | -20.6°S, 101.7°E | Category 1 Tropical Cyclone | 23.1 | 988 |
| 2011-12-09 20:00 | -21.5°S, 102.8°E | Tropical Depression | 12.9 | 997 |
| 2011-12-10 08:00 | -21.7°S, 103.1°E | Tropical Disturbance | - | - |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 2011336S06098 / SH012012. There is no official Chinese name for this basin, so the English name is used. Intensity categories follow the classifications of the local agency in the region and are converted from 1-minute sustained winds using the WMO scale. For reference only. Data notes · Incorrect translation?
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