Tropical Cyclone Val
● 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.
Val at 1975-01-24 08:00:00 (BeijingTime) 在South Pacific首次被记录, peak intensity 为Category 3 tropical cyclone , max wind 约 46.8 m/s (1 分钟平均) , minimum central pressure 945 hPa, at 1975-02-05 20:00:00前后结束, total 记录 51 track points (6 h一个) . 曾Landfall或贴近land.
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1975-01-24 08:00 | -18.7°S, 178.4°E | Tropical Cyclone | - | - |
| 1975-01-25 02:00 | -17.6°S, 178.9°E | Tropical Cyclone | - | - |
| 1975-01-25 20:00 | -15.3°S, 179.2°E | Tropical Cyclone | - | - |
| 1975-01-26 14:00 | -14.4°S, 176.1°W | Tropical Cyclone | - | - |
| 1975-01-27 08:00 | -13.0°S, 178.7°W | Tropical Cyclone | - | - |
| 1975-01-28 02:00 | -12.6°S, 177.5°W | Tropical Cyclone | - | - |
| 1975-01-28 20:00 | -14.2°S, 176.0°W | Tropical Cyclone | - | - |
| 1975-01-29 14:00 | -14.4°S, 176.8°W | Tropical Cyclone | - | - |
| 1975-01-30 08:00 | -15.4°S, 177.4°W | Category 3 tropical cyclone | 44.2 | 955 |
| 1975-01-31 02:00 | -16.7°S, 178.5°W | Tropical Cyclone | - | - |
| 1975-01-31 20:00 | -18.0°S, 178.4°W | Category 3 tropical cyclone | 41.7 | 960 |
| 1975-02-01 14:00 | -19.5°S, 179.3°W | Tropical Cyclone | - | - |
| 1975-02-02 08:00 | -20.2°S, 178.2°E | Category 3 tropical cyclone | 46.8 | 945 |
| 1975-02-03 02:00 | -21.8°S, 174.8°E | Tropical Cyclone | - | - |
| 1975-02-03 20:00 | -24.2°S, 172.8°E | Category 3 tropical cyclone | 41.7 | 960 |
| 1975-02-04 14:00 | -27.6°S, 175.4°E | Tropical Cyclone | - | - |
| 1975-02-05 08:00 | -33.6°S, 178.8°W | Category 3 tropical cyclone | 44.2 | 955 |
| 1975-02-05 20:00 | -38.0°S, 172.3°W | Category 3 tropical cyclone | 36 | 970 |
Data sources: NOAA National Environmental Information Center IBTrACS v04r01 (Knapp et al., 2010), code 1975024S19178 / SH161975. 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, for reference only. Data notes · Incorrect translation?
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