Tropical Cyclone Sheila/Sophie
● 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.
Sheila/Sophie at 1971-01-29 08:00:00 (BeijingTime) 在South Indian Ocean首次被记录, peak intensity 为Category 3 tropical cyclone , max wind 约 36 m/s (1 分钟平均) , at 1971-02-06 08:00:00前后结束, total 记录 33 track points (6 h一个) . 曾Landfall或贴近land.
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1971-01-29 08:00 | -14.0°S, 121.0°E | Tropical Depression | 10.3 | - |
| 1971-01-29 20:00 | -14.1°S, 120.6°E | Tropical Depression | 18 | - |
| 1971-01-30 08:00 | -14.3°S, 120.2°E | Category 1 Tropical Cyclone | 20.6 | - |
| 1971-01-30 20:00 | -14.3°S, 119.6°E | Tropical Depression | 10.3 | - |
| 1971-01-31 08:00 | -14.3°S, 119.1°E | Category 1 Tropical Cyclone | 23.1 | - |
| 1971-01-31 20:00 | -14.6°S, 118.2°E | Tropical Depression | 18 | - |
| 1971-02-01 08:00 | -15.1°S, 117.1°E | Tropical Depression | 12.9 | - |
| 1971-02-01 20:00 | -16.5°S, 116.9°E | Tropical Depression | 15.4 | - |
| 1971-02-02 08:00 | -18.0°S, 117.0°E | Tropical Depression | 18 | - |
| 1971-02-02 20:00 | -19.2°S, 117.1°E | Category 2 Tropical Cyclone | 28.3 | - |
| 1971-02-03 08:00 | -20.1°S, 117.2°E | Category 3 tropical cyclone | 36 | - |
| 1971-02-03 20:00 | -22.1°S, 117.5°E | Tropical Depression | 15.4 | - |
| 1971-02-04 08:00 | -23.9°S, 118.0°E | Tropical Depression | 15.4 | - |
| 1971-02-04 20:00 | -25.3°S, 118.0°E | Tropical Depression | 15.4 | - |
| 1971-02-05 08:00 | -28.0°S, 118.0°E | Tropical Depression | 12.9 | - |
| 1971-02-05 20:00 | -31.5°S, 118.8°E | Tropical Depression | 12.9 | - |
| 1971-02-06 08:00 | -34.0°S, 120.0°E | Tropical Depression | 10.3 | - |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 1971029S14121 / SH121971. No official Chinese name exists for this system, so the original English name is used. Intensity is classified by the local agency for the region, converted from 1-minute sustained winds using the WMO factor, and is for reference only. Data notes · Incorrect translation?
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