Unnamed North Atlantic Hurricane of 1974
● 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).
未命名 at 1974-08-10 20:00:00 (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 996 hPa, at 1974-08-21 20:00:00前后结束, total 记录 45 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1974-08-10 20:00 | 38.0°N, 70.0°W | Tropical Storm | 18 | 1012 |
| 1974-08-11 08:00 | 37.0°N, 68.5°W | Tropical Storm | 20.6 | 1008 |
| 1974-08-11 20:00 | 36.0°N, 66.7°W | Tropical Storm | 20.6 | 1007 |
| 1974-08-12 08:00 | 36.5°N, 65.4°W | Tropical Storm | 20.6 | - |
| 1974-08-12 20:00 | 37.0°N, 65.4°W | Tropical Storm | 23.1 | 1007 |
| 1974-08-13 08:00 | 38.0°N, 65.5°W | Tropical Storm | 23.1 | 1002 |
| 1974-08-13 20:00 | 39.0°N, 65.6°W | Tropical Storm | 23.1 | 1003 |
| 1974-08-14 08:00 | 40.0°N, 64.9°W | Tropical Storm | 25.7 | 1000 |
| 1974-08-14 20:00 | 41.5°N, 64.3°W | Tropical Storm | 28.3 | 996 |
| 1974-08-15 08:00 | 43.5°N, 60.0°W | Tropical Storm | 23.1 | 1001 |
| 1974-08-15 20:00 | 46.0°N, 55.5°W | Extratropical cyclone | 20.6 | 1000 |
| 1974-08-16 08:00 | 48.0°N, 49.5°W | Extratropical cyclone | 20.6 | 997 |
| 1974-08-16 20:00 | 51.0°N, 47.5°W | Extratropical cyclone | 18 | 1000 |
| 1974-08-17 08:00 | 52.2°N, 44.5°W | Extratropical cyclone | 18 | 998 |
| 1974-08-17 20:00 | 52.8°N, 43.0°W | Extratropical cyclone | 18 | 998 |
| 1974-08-18 08:00 | 53.5°N, 44.0°W | Extratropical cyclone | 18 | 1000 |
| 1974-08-18 20:00 | 55.0°N, 41.0°W | Extratropical cyclone | 15.4 | 1000 |
| 1974-08-19 08:00 | 57.5°N, 35.0°W | Extratropical cyclone | 15.4 | 1000 |
| 1974-08-19 20:00 | 59.5°N, 28.5°W | Extratropical cyclone | 18 | 996 |
| 1974-08-20 08:00 | 60.5°N, 23.5°W | Extratropical cyclone | 18 | 997 |
| 1974-08-20 20:00 | 61.5°N, 18.5°W | Extratropical cyclone | 18 | 998 |
| 1974-08-21 08:00 | 62.5°N, 14.0°W | Extratropical cyclone | 15.4 | 1000 |
| 1974-08-21 20:00 | 64.0°N, 8.5°W | Extratropical cyclone | 12.9 | 1001 |
Data sources: NOAA National Environmental Information Center IBTrACS v04r01 (Knapp et al., 2010); code 1974223N38290 / AL061974. This system has no official Chinese name and is shown under its English name. Intensity categories follow the classifications of the relevant local basin agency, based on 1-min sustained wind converted using the WMO factor, for reference only. Data notes · Incorrect translation?
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