Unnamed 1958 South Indian Ocean 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 1958-02-08 02:00:00 (BeijingTime) 在South Indian Ocean首次被记录, peak intensity 为Tropical Depression, max wind 约 18 m/s (1 分钟平均) , at 1958-02-15 08:00:00前后结束, total 记录 30 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1958-02-08 02:00 | -8.3°S, 101.0°E | Tropical Depression | 10.3 | - |
| 1958-02-08 14:00 | -8.5°S, 100.8°E | Tropical Depression | 10.3 | - |
| 1958-02-09 02:00 | -8.9°S, 100.3°E | Tropical Depression | 7.7 | - |
| 1958-02-09 14:00 | -9.3°S, 99.8°E | Tropical Depression | 10.3 | - |
| 1958-02-10 02:00 | -9.8°S, 99.3°E | Tropical Depression | 12.9 | - |
| 1958-02-10 14:00 | -10.2°S, 98.2°E | Tropical Depression | 7.7 | - |
| 1958-02-11 02:00 | -10.8°S, 95.7°E | Tropical Depression | 12.9 | - |
| 1958-02-11 14:00 | -11.6°S, 94.1°E | Tropical Depression | 10.3 | - |
| 1958-02-12 02:00 | -12.6°S, 93.5°E | Tropical Depression | 5.1 | - |
| 1958-02-12 14:00 | -13.8°S, 93.3°E | Tropical Depression | 5.1 | - |
| 1958-02-13 02:00 | -14.7°S, 93.9°E | Tropical Depression | 18 | - |
| 1958-02-13 14:00 | -15.7°S, 93.7°E | Tropical Depression | 18 | - |
| 1958-02-14 02:00 | -16.2°S, 92.1°E | Tropical Depression | 10.3 | - |
| 1958-02-14 14:00 | -17.0°S, 90.5°E | Tropical Depression | 12.9 | - |
| 1958-02-15 02:00 | -17.5°S, 88.9°E | Tropical Disturbance | 15.4 | - |
| 1958-02-15 08:00 | -17.9°S, 87.8°E | Tropical Disturbance | 12.9 | - |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 1958039S08101 / SH131958. This system has no official Chinese name and is shown under its original English name. Intensity grades follow the classifications of the local agency in the region, converted from 1-minute sustained winds using the WMO factor, and are provided for reference only. Data notes · Incorrect translation?
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