Tropical Cyclone Helma/Nicky
● 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).
Helma/Nicky at 2004-03-07 20:00:00 (BeijingTime) 在South Indian Ocean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 975 hPa, at 2004-03-16 20:00:00前后结束, total 记录 37 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 2004-03-07 20:00 | -13.3°S, 89.1°E | Tropical Disturbance | 7.7 | 1005 |
| 2004-03-08 08:00 | -13.3°S, 90.3°E | Tropical Depression | 10.3 | 1004 |
| 2004-03-08 20:00 | -13.0°S, 91.2°E | Tropical Depression | 12.9 | 1000 |
| 2004-03-09 08:00 | -12.9°S, 90.7°E | Tropical Depression | 15.4 | 998 |
| 2004-03-09 20:00 | -13.7°S, 90.8°E | Category 1 Tropical Cyclone | 23.1 | 995 |
| 2004-03-10 08:00 | -14.3°S, 90.6°E | Category 1 Tropical Cyclone | 25.7 | 992 |
| 2004-03-10 20:00 | -15.6°S, 90.1°E | Category 2 Tropical Cyclone | 30.9 | 985 |
| 2004-03-11 08:00 | -17.2°S, 88.9°E | Severe Tropical Storm | 33.4 | 975 |
| 2004-03-11 20:00 | -18.3°S, 87.6°E | Severe Tropical Storm | 33.4 | 975 |
| 2004-03-12 08:00 | -19.3°S, 86.7°E | Severe Tropical Storm | 33.4 | 975 |
| 2004-03-12 20:00 | -19.8°S, 85.4°E | Severe Tropical Storm | 28.3 | 985 |
| 2004-03-13 08:00 | -21.3°S, 84.0°E | Moderate Tropical Storm | 23.1 | 996 |
| 2004-03-13 20:00 | -23.2°S, 84.4°E | Tropical Disturbance | 15.4 | 1000 |
| 2004-03-14 08:00 | -24.9°S, 84.7°E | Tropical Disturbance | 13.9 | 1000 |
| 2004-03-14 20:00 | -25.4°S, 82.7°E | Tropical Disturbance | 13.9 | 1002 |
| 2004-03-15 08:00 | -26.4°S, 80.1°E | Tropical Disturbance | 13.9 | 1004 |
| 2004-03-15 20:00 | -27.9°S, 78.2°E | Tropical Disturbance | 13.9 | 1005 |
| 2004-03-16 08:00 | -30.6°S, 79.4°E | Tropical Disturbance | 11.3 | 1006 |
| 2004-03-16 20:00 | -33.0°S, 83.1°E | Tropical Disturbance | 11.3 | 1010 |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 2004068S13089 / SH172004. This region has no official Chinese name, so the original English name is used. Intensity categories follow the classifications of the local agency in the region, converted from 1-minute sustained winds using the WMO factor, and are provided for reference only. Data notes · Incorrect translation?
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