Tropical Cyclone Cynthia
● 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).
Cynthia at 1991-02-16 08:00:00 (BeijingTime) 在South Indian Ocean首次被记录, peak intensity 为Moderate Tropical Storm, max wind 约 25.7 m/s (1 分钟平均) , minimum central pressure 970 hPa, at 1991-02-19 14:00:00前后结束, total 记录 14 track points (6 h一个) . 曾Landfall或贴近land.
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1991-02-16 08:00 | -16.0°S, 40.6°E | Tropical Disturbance | 12.9 | - |
| 1991-02-16 14:00 | -16.9°S, 40.6°E | Tropical Disturbance | 15.4 | 1000 |
| 1991-02-16 20:00 | -17.6°S, 41.2°E | Tropical Disturbance | 15.4 | 994 |
| 1991-02-17 02:00 | -18.1°S, 42.2°E | Tropical Depression | 18 | 986 |
| 1991-02-17 08:00 | -18.7°S, 43.0°E | Moderate Tropical Storm | 20.6 | 978 |
| 1991-02-17 14:00 | -19.3°S, 43.7°E | Moderate Tropical Storm | 23.1 | 970 |
| 1991-02-17 20:00 | -20.0°S, 44.3°E | Moderate Tropical Storm | 25.7 | 980 |
| 1991-02-18 02:00 | -20.7°S, 44.8°E | Moderate Tropical Storm | 23.1 | 985 |
| 1991-02-18 08:00 | -21.5°S, 45.0°E | Moderate Tropical Storm | 20.6 | 990 |
| 1991-02-18 14:00 | -22.3°S, 44.9°E | Tropical Disturbance | 15.4 | 994 |
| 1991-02-18 20:00 | -22.9°S, 44.5°E | Tropical Cyclone | - | 998 |
| 1991-02-19 02:00 | -23.4°S, 44.2°E | Tropical Cyclone | - | 998 |
| 1991-02-19 08:00 | -23.8°S, 43.8°E | Tropical Cyclone | - | 1000 |
| 1991-02-19 14:00 | -24.1°S, 43.2°E | Tropical Disturbance | 13.4 | 1000 |
Data sources: NOAA National Environmental Information Center IBTrACS v04r01 (Knapp et al., 2010), code 1991047S16041 / SH101991. This region has no official Chinese name, so the original English name is used. Intensity categories follow the local agency classification for the region, converted from 1-minute sustained winds using the WMO factor, for reference only. Data notes · Incorrect translation?
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