Hurricane Gertrude
● Data reliability: ReliableWeather satellites monitored it throughout, so its track and intensity are relatively accurate (Atlantic and E. Pacific since 1966, other basins since 1980).
Gertrude at 1974-09-27 20:00:00 (BeijingTime) 在North Atlantic首次被记录, peak intensity 为Cat 2 Hurricane, max wind 约 43.7 m/s (1 分钟平均) , minimum central pressure 992 hPa, at 1974-10-04 14:00:00前后结束, total 记录 28 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1974-09-27 20:00 | 10.7°N, 45.1°W | Tropical Depression | 15.4 | - |
| 1974-09-28 08:00 | 10.7°N, 47.9°W | Tropical Depression | 15.4 | - |
| 1974-09-28 20:00 | 10.6°N, 50.3°W | Tropical Storm | 30.9 | - |
| 1974-09-29 08:00 | 11.1°N, 53.2°W | Cat 2 Hurricane | 43.7 | 996 |
| 1974-09-29 20:00 | 11.5°N, 55.0°W | Cat 1 Hurricane | 41.2 | 1000 |
| 1974-09-30 08:00 | 11.7°N, 56.0°W | Cat 1 Hurricane | 36 | 1004 |
| 1974-09-30 20:00 | 11.1°N, 56.6°W | Tropical Storm | 25.7 | 1007 |
| 1974-10-01 08:00 | 11.9°N, 57.0°W | Tropical Storm | 20.6 | 1007 |
| 1974-10-01 20:00 | 12.1°N, 58.3°W | Tropical Storm | 20.6 | 1009 |
| 1974-10-02 08:00 | 12.4°N, 59.8°W | Tropical Storm | 18 | 1008 |
| 1974-10-02 20:00 | 12.6°N, 61.5°W | Tropical Depression | 15.4 | 1010 |
| 1974-10-03 08:00 | 12.7°N, 63.2°W | Tropical Depression | 12.9 | 1010 |
| 1974-10-03 20:00 | 12.8°N, 65.0°W | Tropical Depression | 12.9 | - |
| 1974-10-04 08:00 | 13.0°N, 67.0°W | Tropical Depression | 12.9 | - |
| 1974-10-04 14:00 | 13.1°N, 68.0°W | Tropical Depression | 12.9 | - |
Data sources: NOAA National Environmental Information Center IBTrACS v04r01 (Knapp et al., 2010), code 1974271N11315 / AL171974. This area has no official Chinese name, so the English name is used. Intensity categories follow the classification of the local agency in the relevant basin (converted from 1-minute sustained wind using the WMO factor) and are for reference only. Data notes · Incorrect translation?
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