Tropical Cyclone William
● 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).
William at 1983-04-15 08:00:00 (BeijingTime) 在South Pacific首次被记录, peak intensity 为Category 3 tropical cyclone , max wind 约 39.1 m/s (1 分钟平均) , minimum central pressure 955 hPa, at 1983-04-23 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 |
|---|
| 1983-04-15 08:00 | -9.0°S, 132.0°W | Tropical Depression | 16.5 | 997 |
| 1983-04-15 20:00 | -10.0°S, 131.9°W | Tropical Depression | 15.4 | 997 |
| 1983-04-16 08:00 | -10.9°S, 132.2°W | Tropical Depression | 18 | 995 |
| 1983-04-16 20:00 | -11.6°S, 133.1°W | Category 1 Tropical Cyclone | 20.6 | 990 |
| 1983-04-17 08:00 | -12.5°S, 133.9°W | Category 1 Tropical Cyclone | 23.1 | 990 |
| 1983-04-17 20:00 | -13.6°S, 134.5°W | Category 1 Tropical Cyclone | 23.1 | 990 |
| 1983-04-18 08:00 | -14.1°S, 134.9°W | Category 1 Tropical Cyclone | 25.7 | 987 |
| 1983-04-18 20:00 | -15.0°S, 136.1°W | Category 2 Tropical Cyclone | 30.9 | 985 |
| 1983-04-19 08:00 | -15.8°S, 137.7°W | Category 2 Tropical Cyclone | 33.4 | 975 |
| 1983-04-19 20:00 | -16.3°S, 139.1°W | Category 3 tropical cyclone | 36 | 965 |
| 1983-04-20 08:00 | -17.3°S, 139.9°W | Category 3 tropical cyclone | 38.6 | 955 |
| 1983-04-20 20:00 | -18.2°S, 139.6°W | Category 3 tropical cyclone | 38.6 | 955 |
| 1983-04-21 08:00 | -19.6°S, 138.2°W | Category 3 tropical cyclone | 36 | 955 |
| 1983-04-21 20:00 | -20.9°S, 135.9°W | Category 2 Tropical Cyclone | 33.4 | 965 |
| 1983-04-22 08:00 | -21.9°S, 132.7°W | Category 2 Tropical Cyclone | 30.9 | 980 |
| 1983-04-22 20:00 | -22.3°S, 128.5°W | Category 1 Tropical Cyclone | 25.7 | 990 |
| 1983-04-23 08:00 | -24.0°S, 123.9°W | Tropical Depression | 17.5 | 997 |
Data source: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 1983105S09228 / SH221983. There is no official Chinese name for this system, so the original English name is used. Intensity is classified by the local agency in the region, converted from 1-minute sustained wind using the WMO factor, and is provided for reference only. Data notes · Incorrect translation?
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