Tropical Cyclone Irina
● 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).
Irina at 2012-02-25 14:00:00 (BeijingTime) 在South Indian Ocean首次被记录, peak intensity 为Severe Tropical Storm, max wind 约 30.9 m/s (1 分钟平均) , minimum central pressure 978 hPa, at 2012-03-12 14:00:00前后结束, total 记录 65 track points (6 h一个) . 曾Landfall或贴近land.
| Time (BeijingTime) | Position | Category (local) | wind speed m/s | Pressure hPa |
|---|
| 2012-02-25 14:00 | -12.8°S, 56.5°E | Tropical Disturbance | 11.3 | 1001 |
| 2012-02-26 08:00 | -12.1°S, 53.3°E | Tropical Disturbance | 13.9 | 998 |
| 2012-02-27 02:00 | -13.9°S, 49.8°E | Tropical Disturbance | 12.9 | 996 |
| 2012-02-27 20:00 | -15.4°S, 46.5°E | Tropical Disturbance | 12.9 | 999 |
| 2012-02-28 14:00 | -15.9°S, 44.5°E | Tropical Disturbance | 12.9 | 997 |
| 2012-02-29 08:00 | -16.3°S, 43.8°E | Tropical Disturbance | 15.4 | 993 |
| 2012-03-01 02:00 | -16.6°S, 43.7°E | Severe Tropical Storm | 30.9 | 980 |
| 2012-03-01 20:00 | -19.7°S, 43.8°E | Severe Tropical Storm | 30.9 | 985 |
| 2012-03-02 14:00 | -23.5°S, 41.5°E | Severe Tropical Storm | 28.3 | 983 |
| 2012-03-03 08:00 | -25.3°S, 37.8°E | Moderate Tropical Storm | 20.6 | 989 |
| 2012-03-04 02:00 | -25.8°S, 34.7°E | Moderate Tropical Storm | 23.1 | 985 |
| 2012-03-04 20:00 | -27.4°S, 34.2°E | Moderate Tropical Storm | 23.1 | 988 |
| 2012-03-05 14:00 | -30.3°S, 35.0°E | Severe Tropical Storm | 28.3 | 988 |
| 2012-03-06 08:00 | -30.5°S, 38.0°E | Moderate Tropical Storm | 23.1 | 983 |
| 2012-03-07 02:00 | -30.1°S, 40.7°E | Tropical Depression | 18 | 986 |
| 2012-03-07 20:00 | -29.4°S, 40.8°E | Tropical Depression | 18 | 983 |
| 2012-03-08 14:00 | -29.5°S, 40.4°E | Moderate Tropical Storm | 23.1 | 986 |
| 2012-03-09 08:00 | -29.3°S, 39.1°E | Moderate Tropical Storm | 20.6 | 990 |
| 2012-03-10 02:00 | -29.5°S, 37.0°E | Tropical Disturbance | 15.4 | 998 |
| 2012-03-10 20:00 | -28.7°S, 35.8°E | Tropical Disturbance | 12.9 | 1004 |
| 2012-03-11 14:00 | -26.4°S, 35.2°E | Tropical Disturbance | 11.3 | 1007 |
| 2012-03-12 08:00 | -23.5°S, 35.0°E | Tropical Disturbance | - | 1010 |
| 2012-03-12 14:00 | -23.0°S, 34.9°E | Tropical Disturbance | - | - |
Data sources: NOAA National Centers for Environmental Information IBTrACS v04r01 (Knapp et al., 2010), ID: 2012056S13057 / SH142012. There is no official Chinese name for this basin; the English name is displayed. Intensity classifications follow local agency standards for the region (converted from 1-minute sustained winds using WMO coefficients) and are for reference only. Data notes · Incorrect translation?
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