Tropical Cyclone David
● 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).
David at 2009-12-12 08:00:00 (BeijingTime) 在South Indian Ocean首次被记录, peak intensity 为Severe Tropical Storm, max wind 约 28.3 m/s (1 分钟平均) , minimum central pressure 987 hPa, at 2009-12-31 14:00:00前后结束, total 记录 78 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 2009-12-12 08:00 | -6.6°S, 85.8°E | Tropical Disturbance | 7.7 | 1010 |
| 2009-12-13 08:00 | -9.5°S, 84.6°E | Tropical Disturbance | 15.4 | 1002 |
| 2009-12-14 08:00 | -12.5°S, 81.8°E | Tropical Disturbance | 15.4 | 1004 |
| 2009-12-15 08:00 | -14.7°S, 78.4°E | Tropical Disturbance | 15.4 | 1005 |
| 2009-12-16 08:00 | -15.0°S, 75.6°E | Tropical Disturbance | 15.4 | 1004 |
| 2009-12-17 08:00 | -13.9°S, 72.1°E | Tropical Disturbance | 15.4 | 1004 |
| 2009-12-18 08:00 | -12.6°S, 68.7°E | Tropical Disturbance | 12.9 | 1005 |
| 2009-12-19 08:00 | -11.8°S, 65.9°E | Tropical Disturbance | 12.9 | 1005 |
| 2009-12-20 08:00 | -11.3°S, 63.2°E | Tropical Disturbance | 15.4 | 1004 |
| 2009-12-21 08:00 | -10.7°S, 62.1°E | Tropical Depression | 18 | 998 |
| 2009-12-22 08:00 | -11.6°S, 64.5°E | Moderate Tropical Storm | 23.1 | 991 |
| 2009-12-23 08:00 | -13.5°S, 67.8°E | Severe Tropical Storm | 28.3 | 987 |
| 2009-12-24 08:00 | -14.6°S, 69.7°E | Moderate Tropical Storm | 25.7 | 990 |
| 2009-12-25 08:00 | -14.2°S, 70.8°E | Moderate Tropical Storm | 20.6 | 993 |
| 2009-12-26 08:00 | -14.4°S, 71.0°E | Tropical Disturbance | 12.9 | 1001 |
| 2009-12-27 08:00 | -14.0°S, 69.2°E | Tropical Disturbance | 11.3 | 1003 |
| 2009-12-28 08:00 | -14.5°S, 65.2°E | Tropical Disturbance | 11.3 | 1004 |
| 2009-12-29 08:00 | -16.3°S, 59.8°E | Tropical Disturbance | 11.3 | 1005 |
| 2009-12-30 08:00 | -17.2°S, 55.0°E | Tropical Disturbance | 11.3 | 1005 |
| 2009-12-31 08:00 | -16.1°S, 51.8°E | Tropical Disturbance | 11.3 | 1006 |
| 2009-12-31 14:00 | -15.9°S, 51.2°E | Tropical Disturbance | 11.3 | 1006 |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 2009346S07086 / SH052010. This basin has no official Chinese name, so the English name is used. Intensity is graded by the local agency for the basin (converted from 1-min sustained wind using the WMO factor), for reference only. Data notes · Incorrect translation?
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