Tropical Cyclone Gemma
● 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).
Gemma at 1998-04-06 14:00:00 (BeijingTime) 在South Indian Ocean首次被记录, peak intensity 为Tropical Cyclone , max wind 约 36 m/s (1 分钟平均) , minimum central pressure 985 hPa, at 1998-04-17 02:00:00前后结束, total 记录 43 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1998-04-06 14:00 | -12.7°S, 70.8°E | Tropical Disturbance | 12.9 | 1004 |
| 1998-04-07 02:00 | -13.3°S, 71.2°E | Tropical Disturbance | 15.4 | 1002 |
| 1998-04-07 14:00 | -13.5°S, 71.4°E | Tropical Disturbance | 15.4 | 1000 |
| 1998-04-08 02:00 | -13.6°S, 71.9°E | Tropical Disturbance | 15.4 | 992 |
| 1998-04-08 14:00 | -13.9°S, 71.6°E | Moderate Tropical Storm | 23.1 | 988 |
| 1998-04-09 02:00 | -14.2°S, 71.2°E | Moderate Tropical Storm | 25.7 | 988 |
| 1998-04-09 14:00 | -14.8°S, 71.8°E | Severe Tropical Storm | 28.3 | 988 |
| 1998-04-10 02:00 | -15.2°S, 72.6°E | Severe Tropical Storm | 30.9 | 985 |
| 1998-04-10 14:00 | -15.3°S, 73.7°E | Severe Tropical Storm | 30.9 | 985 |
| 1998-04-11 02:00 | -15.4°S, 75.1°E | Tropical Cyclone | 36 | 988 |
| 1998-04-11 14:00 | -15.2°S, 76.5°E | Severe Tropical Storm | 33.4 | 992 |
| 1998-04-12 02:00 | -14.7°S, 77.0°E | Severe Tropical Storm | 33.4 | 997 |
| 1998-04-12 14:00 | -14.7°S, 77.3°E | Severe Tropical Storm | 30.9 | 1000 |
| 1998-04-13 02:00 | -14.9°S, 77.5°E | Moderate Tropical Storm | 25.7 | 1000 |
| 1998-04-13 14:00 | -15.0°S, 77.6°E | Moderate Tropical Storm | 23.1 | 1002 |
| 1998-04-14 02:00 | -14.7°S, 77.3°E | Moderate Tropical Storm | 20.6 | 1002 |
| 1998-04-14 14:00 | -14.5°S, 76.7°E | Tropical Depression | 18 | 1004 |
| 1998-04-15 02:00 | -14.6°S, 75.7°E | Tropical Disturbance | 15.4 | 1005 |
| 1998-04-15 14:00 | -15.5°S, 74.7°E | Tropical Cyclone | - | - |
| 1998-04-16 02:00 | -16.1°S, 73.8°E | Tropical Cyclone | - | - |
| 1998-04-16 14:00 | -16.3°S, 73.0°E | Tropical Cyclone | - | - |
| 1998-04-17 02:00 | -17.2°S, 71.1°E | Tropical Cyclone | - | - |
Data sources: NOAA National Environmental Information Center IBTrACS v04r01 (Knapp et al., 2010), code 1998096S13071 / SH321998. This basin has no official Chinese name, so the original English name is used. Intensity categories follow the classifications of the local basin agency, converted from 1-minute sustained winds using the WMO factor, and are provided for reference only. Data notes · Incorrect translation?
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