Tropical Cyclone Tina
● 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.
Tina at 1974-04-23 20:00:00 (BeijingTime) 在South Pacific首次被记录, peak intensity 为Category 2 Tropical Cyclone , max wind 约 30.4 m/s (1 分钟平均) , minimum central pressure 980 hPa, at 1974-04-28 20:00:00前后结束, total 记录 21 track points (6 h一个) .
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 1974-04-23 20:00 | -12.5°S, 164.0°E | Tropical Cyclone | - | - |
| 1974-04-24 02:00 | -12.8°S, 165.6°E | Tropical Cyclone | - | - |
| 1974-04-24 08:00 | -13.0°S, 167.1°E | Tropical Depression | 16.5 | 997 |
| 1974-04-24 14:00 | -13.0°S, 168.2°E | Tropical Cyclone | - | - |
| 1974-04-24 20:00 | -13.0°S, 169.1°E | Tropical Depression | 16.5 | 997 |
| 1974-04-25 02:00 | -13.2°S, 170.0°E | Tropical Cyclone | - | - |
| 1974-04-25 08:00 | -13.6°S, 171.2°E | Tropical Depression | 16.5 | 997 |
| 1974-04-25 14:00 | -14.3°S, 172.9°E | Tropical Cyclone | - | - |
| 1974-04-25 20:00 | -15.2°S, 174.8°E | Tropical Depression | 16.5 | 997 |
| 1974-04-26 02:00 | -16.3°S, 176.7°E | Tropical Cyclone | - | - |
| 1974-04-26 08:00 | -17.2°S, 178.7°E | Category 1 Tropical Cyclone | 22.1 | 990 |
| 1974-04-26 14:00 | -17.4°S, 179.4°W | Tropical Cyclone | - | - |
| 1974-04-26 20:00 | -17.5°S, 177.2°W | Category 2 Tropical Cyclone | 30.4 | 980 |
| 1974-04-27 02:00 | -18.1°S, 174.7°W | Tropical Cyclone | - | - |
| 1974-04-27 08:00 | -19.0°S, 172.2°W | Category 2 Tropical Cyclone | 30.4 | 980 |
| 1974-04-27 14:00 | -20.2°S, 169.6°W | Tropical Cyclone | - | - |
| 1974-04-27 20:00 | -21.5°S, 166.8°W | Tropical Depression | 16.5 | 997 |
| 1974-04-28 02:00 | -22.9°S, 163.3°W | Tropical Cyclone | - | - |
| 1974-04-28 08:00 | -24.3°S, 159.8°W | Tropical Depression | 16.5 | 997 |
| 1974-04-28 14:00 | -25.1°S, 157.6°W | Tropical Cyclone | - | - |
| 1974-04-28 20:00 | -25.3°S, 156.1°W | Tropical Cyclone | - | - |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), code 1974114S13164 / SH341974. There is no official Chinese name for this system, so the original English name is used. Intensity categories follow the classifications of the local agency in the region, converted from 1-minute sustained winds using the WMO factor, and are for reference only. Data notes · Incorrect translation?
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