1977South Pacific未命名Tropical Cyclone
● 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.
未命名 at 1977-02-03 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 1977-02-09 20:00:00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 |
|---|
| 1977-02-03 08:00 | -18.3°S, 176.2°E | Category 1 Tropical Cyclone | 22.1 | 990 |
| 1977-02-03 20:00 | -19.5°S, 177.9°E | Category 1 Tropical Cyclone | 22.1 | 990 |
| 1977-02-04 08:00 | -20.3°S, 179.3°E | Category 1 Tropical Cyclone | 22.1 | 990 |
| 1977-02-04 20:00 | -21.2°S, 179.7°W | Tropical Depression | 16.5 | 997 |
| 1977-02-05 08:00 | -21.9°S, 178.3°W | Tropical Depression | 16.5 | 997 |
| 1977-02-05 20:00 | -24.0°S, 174.3°W | Tropical Depression | 16.5 | 997 |
| 1977-02-06 08:00 | -27.0°S, 171.5°W | Category 1 Tropical Cyclone | 22.1 | 990 |
| 1977-02-06 20:00 | -29.5°S, 171.5°W | Category 1 Tropical Cyclone | 22.1 | 990 |
| 1977-02-07 08:00 | -32.0°S, 172.0°W | Category 1 Tropical Cyclone | 22.1 | 990 |
| 1977-02-07 20:00 | -33.6°S, 171.8°W | Category 1 Tropical Cyclone | 22.1 | 990 |
| 1977-02-08 08:00 | -36.0°S, 169.5°W | Category 1 Tropical Cyclone | 22.1 | 990 |
| 1977-02-08 20:00 | -37.8°S, 166.3°W | Category 1 Tropical Cyclone | 22.1 | 990 |
| 1977-02-09 08:00 | -40.0°S, 162.8°W | Category 1 Tropical Cyclone | 22.1 | 990 |
| 1977-02-09 20:00 | -44.0°S, 159.3°W | Tropical Depression | 16.5 | 997 |
Data sources: NOAA National Environmental Information Center IBTrACS v04r01 (Knapp et al., 2010), code 1977034S18176. This basin has no official Chinese name, so the original English name is used. Intensity categories follow the local agency classification in the basin, converted from 1-minute sustained winds using the WMO factor, and are for reference only. Data notes · Incorrect translation?
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