Tropical Cyclone Esther
● 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.
Esther at 1977-12-28 14:00:00 (BeijingTime) 在South Indian Ocean首次被记录, peak intensity 为Moderate Tropical Storm, max wind 约 24.2 m/s (1 分钟平均) , minimum central pressure 984 hPa, at 1978-01-02 14:00:00前后结束, total 记录 21 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1977-12-28 14:00 | -10.3°S, 72.5°E | Tropical Disturbance | 11.3 | 1003 |
| 1977-12-28 20:00 | -10.7°S, 71.8°E | Tropical Cyclone | - | - |
| 1977-12-29 02:00 | -11.2°S, 71.0°E | Tropical Cyclone | - | - |
| 1977-12-29 08:00 | -11.6°S, 70.1°E | Tropical Cyclone | - | - |
| 1977-12-29 14:00 | -12.3°S, 69.4°E | Tropical Disturbance | 13.4 | 1000 |
| 1977-12-29 20:00 | -12.8°S, 69.1°E | Tropical Cyclone | - | - |
| 1977-12-30 02:00 | -13.4°S, 68.8°E | Tropical Cyclone | - | - |
| 1977-12-30 08:00 | -13.9°S, 68.7°E | Tropical Cyclone | - | - |
| 1977-12-30 14:00 | -14.6°S, 68.6°E | Moderate Tropical Storm | 24.2 | 984 |
| 1977-12-30 20:00 | -15.6°S, 68.2°E | Tropical Cyclone | - | - |
| 1977-12-31 02:00 | -16.7°S, 68.0°E | Tropical Cyclone | - | - |
| 1977-12-31 08:00 | -17.9°S, 67.5°E | Tropical Cyclone | - | - |
| 1977-12-31 14:00 | -19.0°S, 67.2°E | Moderate Tropical Storm | 20.1 | 991 |
| 1977-12-31 20:00 | -20.3°S, 67.0°E | Tropical Cyclone | - | - |
| 1978-01-01 02:00 | -21.9°S, 67.0°E | Tropical Cyclone | - | - |
| 1978-01-01 08:00 | -23.6°S, 67.0°E | Tropical Cyclone | - | - |
| 1978-01-01 14:00 | -25.3°S, 67.2°E | Tropical Disturbance | 11.3 | 1003 |
| 1978-01-01 20:00 | -26.7°S, 67.5°E | Tropical Cyclone | - | - |
| 1978-01-02 02:00 | -28.2°S, 68.0°E | Tropical Cyclone | - | - |
| 1978-01-02 08:00 | -29.5°S, 68.8°E | Tropical Cyclone | - | - |
| 1978-01-02 14:00 | -30.9°S, 69.7°E | Tropical Cyclone | - | - |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 1977362S10073 / SH101978. No official Chinese name exists for this basin, so the original English name is used. Intensity categories follow the classifications of the local agency in the region and are converted from 1-minute sustained winds using the WMO factor, for reference only. Data notes · Incorrect translation?
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