Hurricane Helga
● 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).
Helga at 1970-07-16 20:00:00 (BeijingTime) 在East Pacific首次被记录, peak intensity 为Tropical Storm, max wind 约 25.7 m/s (1 分钟平均) , at 1970-07-20 08:00:00前后结束, total 记录 15 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1970-07-16 20:00 | 15.9°N, 103.3°W | Tropical Depression | 12.9 | - |
| 1970-07-17 02:00 | 16.2°N, 104.1°W | Tropical Depression | 15.4 | - |
| 1970-07-17 08:00 | 16.7°N, 104.7°W | Tropical Depression | 15.4 | - |
| 1970-07-17 14:00 | 17.2°N, 105.1°W | Tropical Depression | 15.4 | - |
| 1970-07-17 20:00 | 17.7°N, 105.5°W | Tropical Depression | 15.4 | - |
| 1970-07-18 02:00 | 18.3°N, 106.0°W | Tropical Storm | 18 | - |
| 1970-07-18 08:00 | 18.9°N, 106.4°W | Tropical Storm | 18 | - |
| 1970-07-18 14:00 | 19.7°N, 106.9°W | Tropical Storm | 18 | - |
| 1970-07-18 20:00 | 20.4°N, 107.4°W | Tropical Storm | 20.6 | - |
| 1970-07-19 02:00 | 20.9°N, 108.3°W | Tropical Storm | 25.7 | - |
| 1970-07-19 08:00 | 21.4°N, 109.2°W | Tropical Storm | 23.1 | - |
| 1970-07-19 14:00 | 21.8°N, 109.5°W | Tropical Storm | 20.6 | - |
| 1970-07-19 20:00 | 22.0°N, 109.6°W | Tropical Storm | 18 | - |
| 1970-07-20 02:00 | 22.1°N, 109.3°W | Tropical Depression | 15.4 | - |
| 1970-07-20 08:00 | 21.6°N, 109.4°W | Tropical Depression | 15.4 | - |
Data sources: NOAA National Environmental Information Center IBTrACS v04r01 (Knapp et al., 2010), code 1970198N16257 / EP071970. No official Chinese name exists for this ocean area, so the original English name is used. Intensity grades follow the local agency classification for the ocean area, converted from 1-min sustained wind using the WMO factor, for reference only. Data notes · Incorrect translation?
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