Tropical Cyclone Vivienne
● Data reliability: Generally reliable——Aircraft entered typhoons for in situ measurements, but satellites were not yet widespread: tracks are generally accurate, while intensities may be biased, with weaker cyclones potentially going unrecorded from 1950 until the advent of satellite coverage.
Vivienne at 1971-12-16 08:00:00 (BeijingTime) 在South Pacific首次被记录, peak intensity 为Category 1 Tropical Cyclone , max wind 约 22.1 m/s (1 分钟平均) , minimum central pressure 990 hPa, at 1971-12-19 20:00:00前后结束, total 记录 15 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1971-12-16 08:00 | -14.0°S, 166.0°W | Tropical Cyclone | - | - |
| 1971-12-16 14:00 | -14.5°S, 165.2°W | Tropical Cyclone | - | - |
| 1971-12-16 20:00 | -14.8°S, 164.4°W | Tropical Cyclone | - | - |
| 1971-12-17 02:00 | -15.1°S, 163.6°W | Tropical Cyclone | - | - |
| 1971-12-17 08:00 | -15.4°S, 162.7°W | Tropical Cyclone | - | - |
| 1971-12-17 14:00 | -15.9°S, 160.9°W | Tropical Depression | 16.5 | 997 |
| 1971-12-17 20:00 | -16.4°S, 159.0°W | Tropical Cyclone | - | - |
| 1971-12-18 02:00 | -17.1°S, 157.2°W | Tropical Depression | 16.5 | 997 |
| 1971-12-18 08:00 | -17.9°S, 155.5°W | Tropical Cyclone | - | - |
| 1971-12-18 14:00 | -18.7°S, 154.2°W | Category 1 Tropical Cyclone | 22.1 | 990 |
| 1971-12-18 20:00 | -19.5°S, 153.1°W | Tropical Cyclone | - | - |
| 1971-12-19 02:00 | -20.2°S, 152.0°W | Tropical Depression | 16.5 | 997 |
| 1971-12-19 08:00 | -21.1°S, 151.1°W | Tropical Cyclone | - | - |
| 1971-12-19 14:00 | -22.0°S, 149.9°W | Tropical Depression | 16.5 | 997 |
| 1971-12-19 20:00 | -23.3°S, 148.2°W | Tropical Cyclone | - | - |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 1971350S14194 / SH081972. 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 relevant sea area, converted from 1-min sustained wind using the WMO factor, for reference only. Data notes · Incorrect translation?
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