Hurricane Greta
● 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).
Greta at 1970-09-26 20:00:00 (BeijingTime) 在North Atlantic首次被记录, peak intensity 为Tropical Storm, max wind 约 20.6 m/s (1 分钟平均) , minimum central pressure 1003 hPa, at 1970-10-05 02:00:00前后结束, total 记录 34 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1970-09-26 20:00 | 22.2°N, 75.4°W | Tropical Storm | 18 | - |
| 1970-09-27 08:00 | 23.3°N, 77.2°W | Tropical Storm | 20.6 | 1007 |
| 1970-09-27 20:00 | 24.1°N, 79.7°W | Tropical Storm | 20.6 | 1005 |
| 1970-09-28 08:00 | 24.7°N, 82.8°W | Tropical Depression | 15.4 | 1006 |
| 1970-09-28 20:00 | 25.0°N, 83.9°W | Tropical Depression | 15.4 | 1006 |
| 1970-09-29 08:00 | 24.8°N, 84.4°W | Tropical Depression | 15.4 | 1006 |
| 1970-09-29 20:00 | 24.4°N, 84.8°W | Tropical Depression | 15.4 | - |
| 1970-09-30 08:00 | 24.1°N, 85.4°W | Tropical Depression | 15.4 | - |
| 1970-09-30 20:00 | 23.8°N, 86.0°W | Tropical Depression | 15.4 | - |
| 1970-10-01 08:00 | 23.1°N, 86.7°W | Tropical Depression | 15.4 | 1004 |
| 1970-10-01 20:00 | 22.2°N, 87.8°W | Tropical Depression | 15.4 | 1004 |
| 1970-10-02 08:00 | 21.7°N, 89.0°W | Tropical Depression | 15.4 | 1003 |
| 1970-10-02 20:00 | 21.6°N, 90.1°W | Tropical Depression | 15.4 | 1005 |
| 1970-10-03 08:00 | 21.4°N, 91.7°W | Tropical Depression | 15.4 | - |
| 1970-10-03 20:00 | 21.2°N, 93.2°W | Tropical Depression | 12.9 | - |
| 1970-10-04 08:00 | 21.4°N, 94.7°W | Tropical Depression | 12.9 | - |
| 1970-10-04 20:00 | 22.1°N, 96.9°W | Tropical Depression | 12.9 | 1009 |
| 1970-10-05 02:00 | 22.5°N, 98.2°W | Tropical Depression | 12.9 | - |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 1970270N22285 / AL161970. No official Chinese name exists for this system, so the original English name is used. Intensity grades follow the classifications of the relevant local agency in the basin (converted from 1-minute sustained wind using the WMO factor), for reference only. Data notes · Incorrect translation?
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