Tropical Cyclone Keith
● 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.
Keith at 1977-01-30 08:00:00 (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) , at 1977-02-01 08:00:00前后结束, total 记录 9 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1977-01-30 08:00 | -15.2°S, 148.2°E | Category 1 Tropical Cyclone | 20.6 | - |
| 1977-01-30 14:00 | -15.6°S, 147.6°E | Category 1 Tropical Cyclone | 23.1 | - |
| 1977-01-30 20:00 | -16.1°S, 147.1°E | Category 1 Tropical Cyclone | 25.7 | - |
| 1977-01-31 02:00 | -16.2°S, 146.5°E | Category 1 Tropical Cyclone | 25.7 | - |
| 1977-01-31 08:00 | -16.6°S, 146.2°E | Category 1 Tropical Cyclone | 25.7 | - |
| 1977-01-31 14:00 | -17.6°S, 146.3°E | Category 1 Tropical Cyclone | 23.1 | - |
| 1977-01-31 20:00 | -18.5°S, 146.6°E | Tropical Depression | 18 | - |
| 1977-02-01 02:00 | -19.1°S, 146.9°E | Tropical Depression | 15.4 | - |
| 1977-02-01 08:00 | -19.6°S, 147.5°E | Tropical Depression | 15.4 | - |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 1977030S15148 / SH121977. This area has no official Chinese name, so the original English name is used. Categories follow the local agency classification for the region, converted from 1-min sustained winds using the WMO factor, and are for reference only. Data notes · Incorrect translation?
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