Tropical Cyclone Wasa
● 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).
Wasa at 1991-12-05 08:00:00 (BeijingTime) 在South Pacific首次被记录, peak intensity 为Category 4 tropical cyclone , max wind 约 54 m/s (1 分钟平均) , minimum central pressure 940 hPa, at 1991-12-13 20:00:00前后结束, total 记录 35 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1991-12-05 08:00 | -10.0°S, 156.8°W | Tropical Depression | 12.9 | - |
| 1991-12-05 20:00 | -10.8°S, 157.1°W | Tropical Depression | 15.4 | - |
| 1991-12-06 08:00 | -11.4°S, 158.1°W | Category 1 Tropical Cyclone | 20.6 | 990 |
| 1991-12-06 20:00 | -12.3°S, 158.4°W | Category 2 Tropical Cyclone | 28.3 | 980 |
| 1991-12-07 08:00 | -13.2°S, 158.8°W | Category 3 tropical cyclone | 38.6 | 970 |
| 1991-12-07 20:00 | -13.4°S, 159.2°W | Category 4 tropical cyclone | 48.9 | 960 |
| 1991-12-08 08:00 | -13.2°S, 159.0°W | Category 4 tropical cyclone | 54 | 955 |
| 1991-12-08 20:00 | -13.4°S, 158.5°W | Category 4 tropical cyclone | 54 | 955 |
| 1991-12-09 08:00 | -13.8°S, 157.8°W | Category 4 tropical cyclone | 51.4 | 945 |
| 1991-12-09 20:00 | -14.3°S, 156.5°W | Category 4 tropical cyclone | 48.9 | 940 |
| 1991-12-10 08:00 | -14.9°S, 155.1°W | Category 3 tropical cyclone | 46.3 | 940 |
| 1991-12-10 20:00 | -15.8°S, 154.0°W | Category 3 tropical cyclone | 46.3 | 940 |
| 1991-12-11 08:00 | -17.5°S, 152.8°W | Category 3 tropical cyclone | 43.7 | 945 |
| 1991-12-11 20:00 | -19.2°S, 151.9°W | Category 3 tropical cyclone | 41.2 | 955 |
| 1991-12-12 08:00 | -21.4°S, 150.7°W | Category 3 tropical cyclone | 38.6 | 965 |
| 1991-12-12 20:00 | -23.6°S, 149.0°W | Category 2 Tropical Cyclone | 30.9 | 975 |
| 1991-12-13 08:00 | -24.3°S, 146.0°W | Category 1 Tropical Cyclone | 20.6 | 990 |
| 1991-12-13 20:00 | -23.4°S, 143.8°W | Category 1 Tropical Cyclone | 19.5 | 995 |
Data sources: NOAA National Environmental Information Center IBTrACS v04r01 (Knapp et al., 2010), code 1991339S10203 / SH071992. This region has no official Chinese translated name, so the original English name is used. Intensities are classified by the local agency in the region, converted from 1-minute sustained winds using the WMO scale, for reference only. Data notes · Incorrect translation?
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