Tropical Cyclone Io/Jack
● 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.
Io/Jack at 1977-02-13 08:00:00 (BeijingTime) 在South Indian Ocean首次被记录, peak intensity 为Tropical Cyclone , max wind 约 38.6 m/s (1 分钟平均) , minimum central pressure 975 hPa, at 1977-03-03 02:00:00前后结束, total 记录 72 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1977-02-13 08:00 | -9.0°S, 99.4°E | Tropical Depression | 13.9 | 1004 |
| 1977-02-14 02:00 | -9.6°S, 97.8°E | Tropical Depression | 13.9 | 1001 |
| 1977-02-14 20:00 | -10.4°S, 96.3°E | Category 1 Tropical Cyclone | 19.5 | 996 |
| 1977-02-15 14:00 | -11.1°S, 94.8°E | Category 2 Tropical Cyclone | 27.8 | 992 |
| 1977-02-16 08:00 | -12.6°S, 93.5°E | Category 2 Tropical Cyclone | 27.8 | 992 |
| 1977-02-17 02:00 | -13.4°S, 91.2°E | Category 2 Tropical Cyclone | 27.8 | 990 |
| 1977-02-17 20:00 | -13.6°S, 88.7°E | Severe Tropical Storm | 27.8 | 987 |
| 1977-02-18 14:00 | -13.6°S, 86.7°E | Severe Tropical Storm | 27.8 | 984 |
| 1977-02-19 08:00 | -13.5°S, 83.9°E | Tropical Cyclone | - | - |
| 1977-02-20 02:00 | -13.2°S, 81.4°E | Tropical Cyclone | 38.6 | 976 |
| 1977-02-20 20:00 | -13.5°S, 78.8°E | Tropical Cyclone | - | - |
| 1977-02-21 14:00 | -14.1°S, 76.7°E | Tropical Cyclone | - | - |
| 1977-02-22 08:00 | -14.4°S, 73.7°E | Tropical Cyclone | - | - |
| 1977-02-23 02:00 | -14.8°S, 71.4°E | Tropical Cyclone | - | - |
| 1977-02-23 20:00 | -16.0°S, 69.7°E | Tropical Cyclone | - | - |
| 1977-02-24 14:00 | -17.8°S, 67.9°E | Tropical Cyclone | - | - |
| 1977-02-25 08:00 | -22.2°S, 65.2°E | Tropical Cyclone | - | - |
| 1977-02-26 02:00 | -25.5°S, 62.0°E | Tropical Cyclone | - | - |
| 1977-02-26 20:00 | -29.6°S, 61.3°E | Tropical Cyclone | - | - |
| 1977-02-27 14:00 | -30.7°S, 63.0°E | Tropical Cyclone | - | - |
| 1977-02-28 08:00 | -30.5°S, 63.2°E | Tropical Cyclone | - | - |
| 1977-03-01 02:00 | -32.1°S, 63.4°E | Tropical Cyclone | - | - |
| 1977-03-01 20:00 | -33.8°S, 63.9°E | Tropical Cyclone | - | - |
| 1977-03-02 14:00 | -35.1°S, 64.0°E | Tropical Cyclone | - | - |
| 1977-03-03 02:00 | -39.6°S, 70.4°E | Tropical Cyclone | - | - |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 1977044S09099 / SH141977. This basin has no official Chinese translation, so the original English name is used. Intensity categories follow the local agency classification for the basin, converted from 1-minute sustained winds using the WMO factor, and are for reference only. Data notes · Incorrect translation?
Download