Tropical Cyclone Marcelle
● 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.
Marcelle at 1973-04-29 02:00:00 (BeijingTime) 在South Indian Ocean首次被记录, peak intensity 为Severe Tropical Storm, max wind 约 33.4 m/s (1 分钟平均) , minimum central pressure 972 hPa, at 1973-05-09 08:00:00前后结束, total 记录 42 track points (6 h一个) . 曾Landfall或贴近land.
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1973-04-29 02:00 | -8.8°S, 87.3°E | Tropical Cyclone | - | - |
| 1973-04-29 14:00 | -8.8°S, 86.5°E | Tropical Disturbance | 13.9 | 999 |
| 1973-04-30 02:00 | -8.8°S, 85.0°E | Moderate Tropical Storm | 19.5 | 994 |
| 1973-04-30 14:00 | -8.8°S, 83.5°E | Moderate Tropical Storm | 24.7 | 991 |
| 1973-05-01 02:00 | -8.8°S, 82.1°E | Severe Tropical Storm | 27.8 | 986 |
| 1973-05-01 14:00 | -8.9°S, 80.8°E | Severe Tropical Storm | 30.4 | 981 |
| 1973-05-02 02:00 | -9.5°S, 79.6°E | Tropical Cyclone | - | - |
| 1973-05-02 14:00 | -10.4°S, 79.0°E | Tropical Cyclone | - | - |
| 1973-05-03 02:00 | -11.2°S, 79.2°E | Tropical Cyclone | - | - |
| 1973-05-03 14:00 | -13.0°S, 79.8°E | Tropical Cyclone | - | - |
| 1973-05-04 02:00 | -15.9°S, 80.5°E | Severe Tropical Storm | 33.4 | 979 |
| 1973-05-04 14:00 | -18.6°S, 81.1°E | Severe Tropical Storm | 30.4 | 983 |
| 1973-05-05 02:00 | -21.5°S, 81.8°E | Severe Tropical Storm | 27.8 | 989 |
| 1973-05-05 14:00 | -24.2°S, 83.0°E | Moderate Tropical Storm | 19.5 | 993 |
| 1973-05-06 02:00 | -26.9°S, 84.6°E | Tropical Depression | 16.5 | 998 |
| 1973-05-06 14:00 | -30.6°S, 88.3°E | Tropical Depression | 16.5 | 1001 |
| 1973-05-07 02:00 | -32.6°S, 95.7°E | Category 1 Tropical Cyclone | 22.1 | 1001 |
| 1973-05-07 14:00 | -32.7°S, 104.6°E | Category 2 Tropical Cyclone | 27.8 | 996 |
| 1973-05-08 02:00 | -33.5°S, 112.8°E | Category 2 Tropical Cyclone | 33.4 | 980 |
| 1973-05-08 14:00 | -34.9°S, 119.7°E | Category 2 Tropical Cyclone | 27.8 | 987 |
| 1973-05-09 02:00 | -41.8°S, 125.4°E | Category 2 Tropical Cyclone | 27.8 | 976 |
| 1973-05-09 08:00 | -45.8°S, 127.8°E | Category 2 Tropical Cyclone | 27.8 | 972 |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 1973119S09087 / SH351973. This basin has no official Chinese name, so it is displayed in the original English name. Intensity is classified according to the local agency of the basin (converted from 1-minute sustained wind using WMO coefficients), for reference only. Data notes · Incorrect translation?
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