Tropical Cyclone Astride
● 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).
Astride at 1999-12-23 14:00:00 (BeijingTime) 在South Indian Ocean首次被记录, peak intensity 为Severe Tropical Storm, max wind 约 33.4 m/s (1 分钟平均) , minimum central pressure 985 hPa, at 2000-01-03 20:00:00前后结束, total 记录 46 track points (6 h一个) . 曾Landfall或贴近land.
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1999-12-23 14:00 | -8.2°S, 75.5°E | Tropical Disturbance | 11.3 | 1007 |
| 1999-12-24 02:00 | -9.8°S, 75.2°E | Tropical Disturbance | 10.3 | 1005 |
| 1999-12-24 14:00 | -11.2°S, 74.0°E | Tropical Disturbance | 12.9 | 1004 |
| 1999-12-25 02:00 | -12.1°S, 72.0°E | Tropical Disturbance | 12.9 | 1002 |
| 1999-12-25 14:00 | -12.3°S, 70.1°E | Tropical Depression | 18 | 1000 |
| 1999-12-26 02:00 | -12.8°S, 67.9°E | Moderate Tropical Storm | 23.1 | 995 |
| 1999-12-26 14:00 | -13.1°S, 65.8°E | Moderate Tropical Storm | 25.7 | 990 |
| 1999-12-27 02:00 | -13.9°S, 63.9°E | Severe Tropical Storm | 28.3 | 985 |
| 1999-12-27 14:00 | -14.3°S, 62.1°E | Severe Tropical Storm | 30.9 | 985 |
| 1999-12-28 02:00 | -14.6°S, 60.5°E | Severe Tropical Storm | 33.4 | 988 |
| 1999-12-28 14:00 | -15.0°S, 58.6°E | Severe Tropical Storm | 30.9 | 992 |
| 1999-12-29 02:00 | -15.3°S, 57.2°E | Severe Tropical Storm | 28.3 | 992 |
| 1999-12-29 14:00 | -15.6°S, 56.2°E | Severe Tropical Storm | 28.3 | 985 |
| 1999-12-30 02:00 | -15.5°S, 55.3°E | Moderate Tropical Storm | 25.7 | 985 |
| 1999-12-30 14:00 | -15.1°S, 54.1°E | Moderate Tropical Storm | 23.1 | 985 |
| 1999-12-31 02:00 | -14.4°S, 52.4°E | Moderate Tropical Storm | 20.6 | 988 |
| 1999-12-31 14:00 | -13.5°S, 51.2°E | Moderate Tropical Storm | 20.6 | 992 |
| 2000-01-01 02:00 | -12.9°S, 50.0°E | Moderate Tropical Storm | 23.1 | 995 |
| 2000-01-01 14:00 | -12.7°S, 47.9°E | Tropical Depression | 18 | 1000 |
| 2000-01-02 02:00 | -12.6°S, 46.6°E | Tropical Disturbance | 12.9 | 998 |
| 2000-01-02 14:00 | -12.9°S, 45.0°E | Tropical Disturbance | 12.9 | 995 |
| 2000-01-03 02:00 | -13.3°S, 42.5°E | Tropical Disturbance | 12.9 | 995 |
| 2000-01-03 14:00 | -13.6°S, 40.3°E | Tropical Depression | 16.5 | 998 |
| 2000-01-03 20:00 | -13.2°S, 39.5°E | Tropical Disturbance | 13.9 | 1000 |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010); code 1999357S08076 / SH032000. No official Chinese name is available for this basin, so the original English name is used. Intensity is classified by the local agency for the basin and converted from 1-min sustained wind using WMO factors, for reference only. Data notes · Incorrect translation?