Tropical Cyclone Ray
● 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.
Ray at 1975-11-17 08:00:00 (BeijingTime) 在South Indian Ocean首次被记录, peak intensity 为Category 3 tropical cyclone , max wind 约 38.6 m/s (1 分钟平均) , minimum central pressure 973 hPa, at 1975-11-25 08:00:00前后结束, total 记录 33 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1975-11-17 08:00 | -7.0°S, 102.2°E | Tropical Depression | 11.3 | 1008 |
| 1975-11-17 20:00 | -7.4°S, 100.9°E | Tropical Depression | 11.3 | 1006 |
| 1975-11-18 08:00 | -7.9°S, 99.8°E | Tropical Depression | 13.9 | 1003 |
| 1975-11-18 20:00 | -8.4°S, 99.0°E | Tropical Depression | 16.5 | 999 |
| 1975-11-19 08:00 | -9.0°S, 98.2°E | Category 1 Tropical Cyclone | 22.1 | 994 |
| 1975-11-19 20:00 | -9.7°S, 97.0°E | Category 1 Tropical Cyclone | 24.7 | 991 |
| 1975-11-20 08:00 | -10.1°S, 97.0°E | Category 2 Tropical Cyclone | 27.8 | 988 |
| 1975-11-20 20:00 | -10.1°S, 96.1°E | Category 2 Tropical Cyclone | 27.8 | 985 |
| 1975-11-21 08:00 | -10.3°S, 95.1°E | Category 2 Tropical Cyclone | 30.4 | 981 |
| 1975-11-21 20:00 | -10.9°S, 94.4°E | Category 3 tropical cyclone | 36 | 977 |
| 1975-11-22 08:00 | -12.0°S, 93.5°E | Category 3 tropical cyclone | 38.6 | 973 |
| 1975-11-22 20:00 | -13.2°S, 92.2°E | Category 3 tropical cyclone | 36 | 977 |
| 1975-11-23 08:00 | -15.4°S, 90.3°E | Category 2 Tropical Cyclone | 33.4 | 981 |
| 1975-11-23 20:00 | -17.8°S, 89.6°E | Severe Tropical Storm | 27.8 | 989 |
| 1975-11-24 08:00 | -19.5°S, 88.5°E | Tropical Depression | 16.5 | 999 |
| 1975-11-24 20:00 | -21.8°S, 89.6°E | Tropical Disturbance | 13.9 | 1004 |
| 1975-11-25 08:00 | -23.7°S, 91.8°E | Tropical Depression | 11.3 | 1006 |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 1975321S07102 / SH021976. There is no official Chinese name for this system, so the original English name is used. Categories follow the classification of the local agency for the region, converted from 1-min sustained wind using the WMO factor, and are for reference only. Data notes · Incorrect translation?
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