Tropical Cyclone Ana
● 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).
Ana at 2021-01-28 20:00:00 (BeijingTime) 在South Pacific首次被记录, peak intensity 为Category 2 Tropical Cyclone , max wind 约 33.4 m/s (1 分钟平均) , minimum central pressure 970 hPa, at 2021-02-03 14:00:00前后结束, total 记录 24 track points (6 h一个) . 曾Landfall或贴近land.
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 2021-01-28 20:00 | -15.8°S, 171.4°E | Tropical Depression | 12.9 | 998 |
| 2021-01-29 02:00 | -15.7°S, 172.0°E | Tropical Depression | 12.9 | 997 |
| 2021-01-29 08:00 | -15.7°S, 172.5°E | Tropical Depression | 12.9 | 996 |
| 2021-01-29 14:00 | -15.7°S, 173.3°E | Tropical Depression | 15.4 | 994 |
| 2021-01-29 20:00 | -15.5°S, 174.5°E | Tropical Depression | 18 | 993 |
| 2021-01-30 02:00 | -15.7°S, 175.5°E | Category 1 Tropical Cyclone | 20.6 | 995 |
| 2021-01-30 08:00 | -16.2°S, 176.5°E | Category 1 Tropical Cyclone | 20.6 | 987 |
| 2021-01-30 14:00 | -16.6°S, 177.0°E | Category 1 Tropical Cyclone | 23.1 | 987 |
| 2021-01-30 20:00 | -16.9°S, 177.7°E | Category 2 Tropical Cyclone | 28.3 | 987 |
| 2021-01-31 02:00 | -17.4°S, 178.1°E | Category 2 Tropical Cyclone | 30.9 | 975 |
| 2021-01-31 08:00 | -18.1°S, 178.4°E | Category 2 Tropical Cyclone | 33.4 | 975 |
| 2021-01-31 14:00 | -18.8°S, 178.6°E | Category 2 Tropical Cyclone | 33.4 | 975 |
| 2021-01-31 20:00 | -19.6°S, 178.5°E | Category 2 Tropical Cyclone | 30.9 | 970 |
| 2021-02-01 02:00 | -20.5°S, 178.8°E | Category 2 Tropical Cyclone | 33.4 | 970 |
| 2021-02-01 08:00 | -21.1°S, 179.1°E | Category 2 Tropical Cyclone | 33.4 | 975 |
| 2021-02-01 14:00 | -22.3°S, 179.7°E | Category 2 Tropical Cyclone | 28.3 | 975 |
| 2021-02-01 20:00 | -22.8°S, 179.1°W | Category 1 Tropical Cyclone | 25.7 | 980 |
| 2021-02-02 02:00 | -23.0°S, 178.6°W | Category 1 Tropical Cyclone | 20.6 | 995 |
| 2021-02-02 08:00 | -23.9°S, 177.8°W | Category 1 Tropical Cyclone | 20.6 | 985 |
| 2021-02-02 14:00 | -24.8°S, 176.6°W | Category 1 Tropical Cyclone | 20.6 | 988 |
| 2021-02-02 20:00 | -25.6°S, 175.5°W | Tropical Depression | 18 | 990 |
| 2021-02-03 02:00 | -26.4°S, 174.0°W | Tropical Depression | 18 | 990 |
| 2021-02-03 08:00 | -27.8°S, 172.4°W | Tropical Depression | 18 | 998 |
| 2021-02-03 14:00 | -30.3°S, 170.9°W | Tropical Depression | 18 | 997 |
Data sources: NOAA National Environmental Information Center IBTrACS v04r01 (Knapp et al., 2010), code 2021029S16171 / SH152021. There is no official Chinese name for this system, so the original English name is used. Intensity is classified by the local agency in the relevant sea area, converted from 1-minute sustained winds using the WMO factor, for reference only. Data notes · Incorrect translation?
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