Tropical Cyclone Nisha/Orama
● 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).
Nisha/Orama at 1983-02-20 08:00:00 (BeijingTime) 在South Pacific首次被记录, peak intensity 为Category 4 tropical cyclone , max wind 约 51.4 m/s (1 分钟平均) , minimum central pressure 925 hPa, at 1983-02-28 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 |
|---|
| 1983-02-20 08:00 | -15.0°S, 146.0°W | Tropical Depression | 16.5 | 997 |
| 1983-02-20 20:00 | -14.3°S, 144.4°W | Tropical Depression | 12.9 | 997 |
| 1983-02-21 08:00 | -13.9°S, 143.4°W | Tropical Depression | 15.4 | 997 |
| 1983-02-21 20:00 | -14.2°S, 143.0°W | Tropical Depression | 15.4 | 997 |
| 1983-02-22 08:00 | -14.3°S, 143.1°W | Tropical Depression | 18 | 995 |
| 1983-02-22 20:00 | -14.5°S, 143.9°W | Category 1 Tropical Cyclone | 23.1 | 987 |
| 1983-02-23 08:00 | -14.8°S, 145.1°W | Category 2 Tropical Cyclone | 33.4 | 980 |
| 1983-02-23 20:00 | -15.0°S, 146.1°W | Category 3 tropical cyclone | 41.2 | 965 |
| 1983-02-24 08:00 | -15.5°S, 146.8°W | Category 4 tropical cyclone | 48.9 | 945 |
| 1983-02-24 20:00 | -16.1°S, 147.0°W | Category 4 tropical cyclone | 51.4 | 925 |
| 1983-02-25 08:00 | -16.7°S, 146.8°W | Category 4 tropical cyclone | 48.9 | 925 |
| 1983-02-25 20:00 | -17.3°S, 146.3°W | Category 3 tropical cyclone | 46.3 | 940 |
| 1983-02-26 08:00 | -18.1°S, 145.6°W | Category 3 tropical cyclone | 43.7 | 955 |
| 1983-02-26 20:00 | -19.6°S, 144.3°W | Category 3 tropical cyclone | 41.2 | 965 |
| 1983-02-27 08:00 | -21.4°S, 142.6°W | Category 3 tropical cyclone | 38.6 | 980 |
| 1983-02-27 20:00 | -24.8°S, 140.5°W | Category 2 Tropical Cyclone | 33.4 | 990 |
| 1983-02-28 08:00 | -29.6°S, 138.2°W | Category 1 Tropical Cyclone | 20.1 | - |
| 1983-02-28 20:00 | -36.5°S, 137.0°W | Tropical Depression | 12.9 | - |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 1983051S15214 / SH131983. This area has no official Chinese translation, so the original English name is used. Intensity is classified by the local agency for the region and converted from 1-minute sustained wind using the WMO factor, for reference only. Data notes · Incorrect translation?
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