Tropical Cyclone Leo
● 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.
Leo at 1977-03-24 08:00:00 (BeijingTime) 在South Indian Ocean首次被记录, peak intensity 为Category 3 tropical cyclone , max wind 约 46.3 m/s (1 分钟平均) , at 1977-03-28 08:00:00前后结束, total 记录 17 track points (6 h一个) . 曾Landfall或贴近land.
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1977-03-24 08:00 | -15.0°S, 124.5°E | Tropical Depression | 12.9 | - |
| 1977-03-24 14:00 | -15.3°S, 123.9°E | Tropical Depression | 15.4 | - |
| 1977-03-24 20:00 | -15.5°S, 123.1°E | Tropical Depression | 18 | - |
| 1977-03-25 02:00 | -15.9°S, 122.3°E | Tropical Depression | 18 | - |
| 1977-03-25 08:00 | -16.4°S, 121.4°E | Category 1 Tropical Cyclone | 20.6 | - |
| 1977-03-25 14:00 | -16.9°S, 120.6°E | Category 1 Tropical Cyclone | 25.7 | - |
| 1977-03-25 20:00 | -17.3°S, 119.9°E | Category 2 Tropical Cyclone | 33.4 | - |
| 1977-03-26 02:00 | -17.7°S, 119.4°E | Category 3 tropical cyclone | 38.6 | - |
| 1977-03-26 08:00 | -18.2°S, 119.0°E | Category 3 tropical cyclone | 43.7 | - |
| 1977-03-26 14:00 | -18.8°S, 118.7°E | Category 3 tropical cyclone | 46.3 | - |
| 1977-03-26 20:00 | -19.5°S, 118.7°E | Category 3 tropical cyclone | 46.3 | - |
| 1977-03-27 02:00 | -20.1°S, 118.9°E | Category 3 tropical cyclone | 41.2 | - |
| 1977-03-27 08:00 | -20.5°S, 119.3°E | Category 2 Tropical Cyclone | 33.4 | - |
| 1977-03-27 14:00 | -21.2°S, 120.0°E | Category 1 Tropical Cyclone | 25.7 | - |
| 1977-03-27 20:00 | -21.5°S, 120.8°E | Tropical Depression | 18 | - |
| 1977-03-28 02:00 | -21.7°S, 121.7°E | Tropical Depression | 15.4 | - |
| 1977-03-28 08:00 | -21.8°S, 122.7°E | Tropical Depression | 15.4 | - |
Data sources: NOAA National Environmental Information Center IBTrACS v04r01 (Knapp et al., 2010), code 1977083S15125 / SH231977. This basin has no official Chinese name, so the original English name is used. Intensity categories follow the classifications of the regional agency in the basin, converted from 1-minute sustained winds using WMO factors, for reference only. Data notes · Incorrect translation?
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