Unnamed North Indian Ocean cyclone of 1991
● 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 1991-05-30 08:00:00 (BeijingTime) 在North Indian Ocean首次被记录, peak intensity 为强The Cyclone Storm, max wind 约 25.7 m/s (1 分钟平均) , minimum central pressure 990 hPa, at 1991-06-03 08:00:00前后结束, total 记录 17 track points (6 h一个) . 曾Landfall或贴近land.
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1991-05-30 08:00 | 13.6°N, 90.8°E | Depressions | 10.3 | - |
| 1991-05-30 14:00 | 13.6°N, 90.2°E | Depressions | 10.3 | - |
| 1991-05-30 20:00 | 13.7°N, 89.5°E | Depressions | 10.3 | - |
| 1991-05-31 02:00 | 14.0°N, 88.8°E | Depressions | 12.9 | - |
| 1991-05-31 08:00 | 14.4°N, 89.0°E | Depressions | 12.9 | 1000 |
| 1991-05-31 14:00 | 15.2°N, 89.0°E | Depressions | 12.9 | 998 |
| 1991-05-31 20:00 | 16.1°N, 88.9°E | Depressions | 12.9 | 996 |
| 1991-06-01 02:00 | 16.7°N, 88.9°E | Deep Depression | 15.4 | 996 |
| 1991-06-01 08:00 | 17.4°N, 89.0°E | Deep Depression | 15.4 | 994 |
| 1991-06-01 14:00 | 18.9°N, 89.4°E | Deep Depression | 18 | 994 |
| 1991-06-01 20:00 | 19.7°N, 89.8°E | The Cyclone Storm | 20.6 | 990 |
| 1991-06-02 02:00 | 20.5°N, 90.0°E | The Cyclone Storm | 23.1 | 992 |
| 1991-06-02 08:00 | 22.3°N, 91.0°E | 强The Cyclone Storm | 25.7 | 990 |
| 1991-06-02 14:00 | 24.1°N, 92.3°E | The Cyclone Storm | 23.1 | 996 |
| 1991-06-02 20:00 | 24.9°N, 93.2°E | Deep Depression | 18 | 1000 |
| 1991-06-03 02:00 | 25.7°N, 94.5°E | Deep Depression | 15.4 | - |
| 1991-06-03 08:00 | 26.7°N, 96.4°E | Depressions | 12.9 | - |
Data sources: NOAA National Environmental Information Center IBTrACS v04r01 (Knapp et al., 2010), code 1991150N14091 / IO031991. This basin has no official Chinese translated name, so the original English name is used. Intensity is classified by the local agency in the basin, converted from 1-minute sustained winds using the WMO factor, for reference only. Data notes · Incorrect translation?
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