1977 Unnamed North Indian Ocean Cyclone
● Data reliability: Generally reliable——Aircraft entered typhoons for in situ measurements, but satellites were not yet widespread: tracks are generally accurate, while intensities may be biased, with weaker cyclones potentially going unrecorded from 1950 until the advent of satellite coverage.
未命名 at 1977-10-27 08:00:00 (BeijingTime) 在North Indian Ocean首次被记录, peak intensity 为The Cyclone Storm, max wind 约 20.6 m/s (1 分钟平均) , at 1977-11-04 20:00:00前后结束, total 记录 35 track points (6 h一个) . 曾Landfall或贴近land.
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1977-10-27 08:00 | 13.0°N, 92.2°E | Tropical Cyclone | - | - |
| 1977-10-27 20:00 | 13.0°N, 91.1°E | Tropical Cyclone | - | - |
| 1977-10-28 08:00 | 13.0°N, 90.1°E | Tropical Cyclone | - | - |
| 1977-10-28 20:00 | 13.0°N, 88.6°E | Tropical Cyclone | - | - |
| 1977-10-29 08:00 | 13.1°N, 87.9°E | Tropical Cyclone | - | - |
| 1977-10-29 20:00 | 13.5°N, 86.6°E | Tropical Cyclone | - | - |
| 1977-10-30 08:00 | 14.3°N, 85.1°E | Deep Depression | 18 | - |
| 1977-10-30 20:00 | 14.6°N, 83.0°E | Deep Depression | 18 | - |
| 1977-10-31 08:00 | 14.7°N, 81.3°E | Deep Depression | 18 | - |
| 1977-10-31 20:00 | 15.1°N, 79.1°E | The Cyclone Storm | 20.6 | - |
| 1977-11-01 08:00 | 15.4°N, 76.1°E | Tropical Cyclone | - | - |
| 1977-11-01 20:00 | 16.5°N, 73.1°E | Tropical Cyclone | - | - |
| 1977-11-02 08:00 | 17.0°N, 70.7°E | Tropical Cyclone | - | - |
| 1977-11-02 20:00 | 17.3°N, 68.0°E | Tropical Cyclone | - | - |
| 1977-11-03 08:00 | 17.1°N, 66.0°E | Tropical Cyclone | - | - |
| 1977-11-03 20:00 | 16.6°N, 63.0°E | Tropical Cyclone | - | - |
| 1977-11-04 08:00 | 16.2°N, 60.7°E | Tropical Cyclone | - | - |
| 1977-11-04 20:00 | 15.5°N, 57.0°E | Tropical Cyclone | - | - |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 1977300N13092 / IO041977. This system has no official Chinese name and is shown under its original English name. Intensity is classified by the local agency for the relevant sea area, converted from 1-minute sustained winds using the WMO factor, for reference only. Data notes · Incorrect translation?
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