Hurricane Hernan
● 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).
Hernan at 1990-07-19 20:00:00 (BeijingTime) 在East Pacific首次被记录, peak intensity 为Cat 4 Hurricane, max wind 约 69.4 m/s (1 分钟平均) , minimum central pressure 928 hPa, at 1990-07-31 08:00:00前后结束, total 记录 47 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1990-07-19 20:00 | 12.0°N, 106.5°W | Tropical Depression | 12.9 | 1012 |
| 1990-07-20 08:00 | 12.1°N, 108.3°W | Tropical Depression | 12.9 | 1011 |
| 1990-07-20 20:00 | 12.3°N, 109.9°W | Tropical Depression | 15.4 | 1010 |
| 1990-07-21 08:00 | 12.9°N, 111.3°W | Tropical Storm | 18 | 1004 |
| 1990-07-21 20:00 | 13.8°N, 112.7°W | Tropical Storm | 28.3 | 996 |
| 1990-07-22 08:00 | 14.8°N, 113.7°W | Cat 1 Hurricane | 38.6 | 978 |
| 1990-07-22 20:00 | 15.7°N, 114.8°W | Cat 3 Hurricane | 54 | 954 |
| 1990-07-23 08:00 | 16.6°N, 115.9°W | Cat 4 Hurricane | 64.3 | 939 |
| 1990-07-23 20:00 | 17.3°N, 117.2°W | Cat 4 Hurricane | 69.4 | 929 |
| 1990-07-24 08:00 | 17.6°N, 118.5°W | Cat 4 Hurricane | 66.9 | 929 |
| 1990-07-24 20:00 | 17.9°N, 119.6°W | Cat 4 Hurricane | 61.7 | 939 |
| 1990-07-25 08:00 | 18.2°N, 120.7°W | Cat 4 Hurricane | 59.2 | 949 |
| 1990-07-25 20:00 | 18.4°N, 121.9°W | Cat 3 Hurricane | 56.6 | 952 |
| 1990-07-26 08:00 | 18.7°N, 123.3°W | Cat 3 Hurricane | 54 | 955 |
| 1990-07-26 20:00 | 19.2°N, 124.8°W | Cat 3 Hurricane | 51.4 | 961 |
| 1990-07-27 08:00 | 19.6°N, 126.5°W | Cat 1 Hurricane | 41.2 | 972 |
| 1990-07-27 20:00 | 19.9°N, 128.2°W | Cat 1 Hurricane | 36 | 982 |
| 1990-07-28 08:00 | 20.0°N, 129.9°W | Tropical Storm | 30.9 | 990 |
| 1990-07-28 20:00 | 20.2°N, 131.8°W | Tropical Storm | 25.7 | 996 |
| 1990-07-29 08:00 | 20.7°N, 133.6°W | Tropical Storm | 23.1 | 1000 |
| 1990-07-29 20:00 | 21.5°N, 135.3°W | Tropical Storm | 18 | 1004 |
| 1990-07-30 08:00 | 22.8°N, 136.7°W | Tropical Depression | 15.4 | 1008 |
| 1990-07-30 20:00 | 24.5°N, 137.8°W | Tropical Depression | 15.4 | 1010 |
| 1990-07-31 08:00 | 26.2°N, 138.5°W | Tropical Depression | 12.9 | 1011 |
Data sources: NOAA National Environmental Information Center IBTrACS v04r01 (Knapp et al., 2010), code 1990201N12254 / EP091990. This area has no official Chinese translation, so the original English name is used. Intensity categories follow the classifications of the local agency in the region (converted from 1-minute sustained winds using the WMO factor) and are for reference only. Data notes · Incorrect translation?
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