Tropical Cyclone Diana
● 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.
Diana at 1978-02-15 20:00:00 (BeijingTime) 在South Pacific首次被记录, peak intensity 为Category 1 Tropical Cyclone , max wind 约 25.7 m/s (1 分钟平均) , minimum central pressure 980 hPa, at 1978-02-22 08:00:00前后结束, total 记录 27 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1978-02-15 20:00 | -13.5°S, 163.0°W | Tropical Depression | 16.5 | 997 |
| 1978-02-16 08:00 | -15.2°S, 159.7°W | Tropical Depression | 15.4 | 990 |
| 1978-02-16 20:00 | -16.6°S, 156.4°W | Tropical Depression | 18 | 990 |
| 1978-02-17 08:00 | -16.8°S, 154.9°W | Category 1 Tropical Cyclone | 25.7 | 990 |
| 1978-02-17 20:00 | -17.1°S, 152.7°W | Category 1 Tropical Cyclone | 25.7 | 980 |
| 1978-02-18 08:00 | -17.9°S, 151.6°W | Category 1 Tropical Cyclone | 25.7 | 980 |
| 1978-02-18 20:00 | -18.9°S, 151.9°W | Category 1 Tropical Cyclone | 25.7 | 980 |
| 1978-02-19 08:00 | -18.5°S, 151.9°W | Category 1 Tropical Cyclone | 23.1 | 990 |
| 1978-02-19 20:00 | -20.0°S, 152.1°W | Category 1 Tropical Cyclone | 20.6 | 990 |
| 1978-02-20 08:00 | -20.9°S, 152.8°W | Tropical Depression | 18 | 990 |
| 1978-02-20 20:00 | -22.7°S, 153.5°W | Tropical Depression | 18 | 990 |
| 1978-02-21 08:00 | -24.2°S, 153.3°W | Tropical Depression | 18 | 997 |
| 1978-02-21 20:00 | -26.4°S, 151.3°W | Tropical Depression | 18 | 997 |
| 1978-02-22 08:00 | -27.6°S, 148.8°W | Tropical Depression | 15.4 | 997 |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 1978047S13197 / SH221978. No official Chinese name is available for this storm, so the English name is used. Intensity is classified by the local agency for the region and converted from 1-minute sustained wind using WMO factors, for reference only. Data notes · Incorrect translation?
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