Hurricane Francene/Francesca
● 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).
Francene/Francesca at 1971-07-18 08:00:00 (BeijingTime) 在East Pacific首次被记录, peak intensity 为Cat 3 Hurricane, max wind 约 51.4 m/s (1 分钟平均) , minimum central pressure 991 hPa, at 1971-07-23 20:00:00前后结束, total 记录 23 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1971-07-18 08:00 | 11.3°N, 105.7°W | Tropical Depression | 12.9 | - |
| 1971-07-18 14:00 | 11.4°N, 106.5°W | Tropical Depression | 12.9 | - |
| 1971-07-18 20:00 | 11.6°N, 107.2°W | Tropical Depression | 12.9 | - |
| 1971-07-19 02:00 | 12.1°N, 108.3°W | Tropical Depression | 15.4 | - |
| 1971-07-19 08:00 | 12.7°N, 109.3°W | Tropical Storm | 20.6 | - |
| 1971-07-19 14:00 | 13.4°N, 110.8°W | Tropical Storm | 20.6 | - |
| 1971-07-19 20:00 | 14.1°N, 112.2°W | Cat 1 Hurricane | 38.6 | - |
| 1971-07-20 02:00 | 14.9°N, 113.3°W | Cat 3 Hurricane | 51.4 | - |
| 1971-07-20 08:00 | 15.7°N, 114.5°W | Cat 3 Hurricane | 51.4 | - |
| 1971-07-20 14:00 | 16.1°N, 115.4°W | Cat 3 Hurricane | 51.4 | - |
| 1971-07-20 20:00 | 16.6°N, 116.4°W | Cat 3 Hurricane | 51.4 | - |
| 1971-07-21 02:00 | 16.8°N, 116.7°W | Tropical Storm | 30.9 | 991 |
| 1971-07-21 08:00 | 16.9°N, 117.0°W | Tropical Storm | 30.9 | - |
| 1971-07-21 14:00 | 16.8°N, 118.7°W | Tropical Storm | 30.9 | - |
| 1971-07-21 20:00 | 16.7°N, 120.3°W | Tropical Storm | 20.6 | - |
| 1971-07-22 02:00 | 16.6°N, 121.1°W | Tropical Storm | 20.6 | 1005 |
| 1971-07-22 08:00 | 16.6°N, 122.0°W | Tropical Storm | 20.6 | - |
| 1971-07-22 14:00 | 16.6°N, 123.2°W | Tropical Storm | 20.6 | - |
| 1971-07-22 20:00 | 16.5°N, 124.4°W | Tropical Storm | 18 | - |
| 1971-07-23 02:00 | 16.4°N, 125.9°W | Tropical Storm | 23.1 | 995 |
| 1971-07-23 08:00 | 16.1°N, 127.3°W | Tropical Storm | 23.1 | - |
| 1971-07-23 14:00 | 15.8°N, 128.2°W | Tropical Storm | 23.1 | - |
| 1971-07-23 20:00 | 15.3°N, 129.0°W | Tropical Storm | 18 | - |
Data sources: NOAA National Environmental Information Center IBTrACS v04r01 (Knapp et al., 2010), code 1971199N11254 / EP061971. No official Chinese name exists for this storm, so the original English name is used. Intensity is classified by the relevant local agency in the basin, converted from 1-minute sustained wind using the WMO factor, for reference only. Data notes · Incorrect translation?