Hurricane Bertha
● 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.
Bertha at 1957-08-08 08:00:00 (BeijingTime) 在North Atlantic首次被记录, peak intensity 为Tropical Storm, max wind 约 28.3 m/s (1 分钟平均) , minimum central pressure 998 hPa, at 1957-08-11 14:00:00前后结束, total 记录 14 track points (6 h一个) . 曾Landfall或贴近land.
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1957-08-08 08:00 | 27.0°N, 87.4°W | Tropical Depression | 12.9 | - |
| 1957-08-08 14:00 | 27.0°N, 88.0°W | Tropical Depression | 15.4 | - |
| 1957-08-08 20:00 | 27.0°N, 88.6°W | Tropical Storm | 18 | - |
| 1957-08-09 02:00 | 27.2°N, 89.2°W | Tropical Storm | 23.1 | - |
| 1957-08-09 08:00 | 27.5°N, 89.9°W | Tropical Storm | 28.3 | 1000 |
| 1957-08-09 14:00 | 27.8°N, 90.6°W | Tropical Storm | 25.7 | - |
| 1957-08-09 20:00 | 28.3°N, 91.3°W | Tropical Storm | 23.1 | - |
| 1957-08-10 02:00 | 29.0°N, 92.2°W | Tropical Storm | 25.7 | 1005 |
| 1957-08-10 08:00 | 29.5°N, 93.1°W | Tropical Storm | 28.3 | 1002 |
| 1957-08-10 14:00 | 29.7°N, 93.9°W | Tropical Storm | 28.3 | 998 |
| 1957-08-10 20:00 | 30.1°N, 94.6°W | Tropical Storm | 20.6 | - |
| 1957-08-11 02:00 | 30.8°N, 95.1°W | Tropical Depression | 15.4 | - |
| 1957-08-11 08:00 | 31.7°N, 95.2°W | Tropical Depression | 12.9 | - |
| 1957-08-11 14:00 | 32.7°N, 95.2°W | Tropical Depression | 12.9 | - |
Data sources: NOAA National Environmental Information Center IBTrACS v04r01 (Knapp et al., 2010), code 1957220N27273 / AL031957. There is no official Chinese name for this system, so the original English name is used. Intensity is classified by the local agency in the relevant sea area, converted from 1-minute sustained winds using the WMO factor. For reference only. Data notes · Incorrect translation?
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