1981South Indian Ocean未命名Tropical Cyclone
● 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).
未命名 at 1981-07-25 20:00:00 (BeijingTime) 在South Indian Ocean首次被记录, peak intensity 为Tropical Disturbance, max wind 约 15.4 m/s (1 分钟平均) , at 1981-07-28 20:00:00前后结束, total 记录 13 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1981-07-25 20:00 | -11.8°S, 86.7°E | Tropical Disturbance | 10.3 | - |
| 1981-07-26 02:00 | -11.6°S, 86.4°E | Tropical Disturbance | 12.9 | - |
| 1981-07-26 08:00 | -11.3°S, 86.2°E | Tropical Disturbance | 12.9 | - |
| 1981-07-26 14:00 | -10.9°S, 86.2°E | Tropical Disturbance | 12.9 | - |
| 1981-07-26 20:00 | -10.4°S, 86.1°E | Tropical Disturbance | 12.9 | - |
| 1981-07-27 02:00 | -10.1°S, 85.7°E | Tropical Disturbance | 15.4 | - |
| 1981-07-27 08:00 | -10.0°S, 85.3°E | Tropical Disturbance | 15.4 | - |
| 1981-07-27 14:00 | -10.3°S, 85.1°E | Tropical Disturbance | 15.4 | - |
| 1981-07-27 20:00 | -10.7°S, 84.9°E | Tropical Disturbance | 12.9 | - |
| 1981-07-28 02:00 | -11.1°S, 84.9°E | Tropical Disturbance | 12.9 | - |
| 1981-07-28 08:00 | -11.6°S, 84.8°E | Tropical Disturbance | 12.9 | - |
| 1981-07-28 14:00 | -12.0°S, 84.7°E | Tropical Disturbance | 12.9 | - |
| 1981-07-28 20:00 | -12.5°S, 84.6°E | Tropical Disturbance | 10.3 | - |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 1981207S12087 / SH011982. There is no official Chinese name for this system, so the original English name is used. Intensity grades follow the classification of the local agency in the region, converted from 1-minute sustained winds using WMO factors, and are for reference only. Data notes · Incorrect translation?
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