| Classification of Tropical Cyclones 熱帶氣旋之分級 | |||||
|---|---|---|---|---|---|
| Grade 級別 | One-Minute Mean Wind Speed at Ten Metres above Sea 海面上十公尺之一分鐘平均風速 | ||||
| Force 風級 | m/s 公尺/秒 | knot 海浬/時 | mph 英哩/時 | km/h 公里/時 | |
| Tropical Depression 熱帶低氣壓 | 6-7 | 10.8-17.1 | 22-33 | 25-38 | 39-61 |
| Tropical Storma 熱帶風暴a | 8-9 | 17.2-24.4 | 34-47 | 39-54 | 62-88 |
| Severe Tropical Stormb 強烈熱帶風暴b | 10-11 | 24.5-32.6 | 48-63 | 55-72 | 89-117 |
| Typhoon/Hurricane 颱風/颶風 | 12+ | 32.7+ | 64+ | 73+ | 118+ |
| a, b: Adopted by the Hong Kong Observatory and the Japan Meteorological Agency a,b:香港天文及日本氣象廳台採用 In the rest of the world these two grades are often combined as "Tropical Storm" 世界各地多合併此兩級為「熱帶風暴」 | |||||
| The Saffir-Simpson Scale of Typhoons/Hurricanes Saffir-Simpson之颱風/颶風分級法 | |||||
| Category 1 一級 Minimal 輕度 980mb+ | 12-14 | 32.7-42.7 | 64-83 | 73-95 | 118-153 |
| Category 2 二級 Moderate 中度 965-980mb | 14-15 | 42.8-49.3 | 84-96 | 96-110 | 154-177 |
| Category 3 三級 Extensive 廣泛 945-964mb | 15-17 | 49.4-58.1 | 97-113 | 111-130 | 178-209 |
| Category 4 四級 Extreme 極度 920-944mb | 17+ | 58.2-69.4 | 114-135 | 131-155 | 210-250 |
| Category 5 五級 Catastrophic 災難性 920mb- | 17+ | 69.4+ | 135+ | 155+ | 250+ |
| A 130-knot+ typhoon is also known as a "Super Typhoon" 持續風速超過每小時130浬之颱風,亦稱為「超級颱風」 | |||||