Analysis of Typhoon Rai
Track and Movement Characteristics
Typhoon Rai (202122) formed at Northwest Pacific低纬度海域, 整体路径呈现稳定的WNW走 toward . 从初始坐标 (4.7°N, 144.9°E) 至消散点 (21.5°N, 115.2°E) , 系统横跨经度约30度, 纬度 toward N推进约17度. 在生命史前期 (12月12日至16日) , Typhoon 主要 toward NW, 横穿Philippines以E海域; Go to S海后 (12月17日后) , 路径逐渐转为N direction, 最终在接近China华Scoastal 时减弱消散. 全生命周期内无Landfall记录, 但路径紧密贴近land边缘, 对周边海域影响显著. 路径采样点分布均匀, 显示其Moving速度较为稳定, 未出现明显的停滞或剧烈转 toward 现象.
Intensity Evolution and Double Peak Structure
Rai的Intensity变化具有显著的“快速增强-短暂减弱-二次爆发”特征. 初期从Tropical Depression迅速加强, at 12月16日凌晨首次达到Super Typhoon级别 (52m/s, 935hPa) . 随后受环境影响, intensity 有所波动, 12月17日降至Severe Typhoon级 (42m/s) . 然而, Go to S海后, 系统并未持续衰减, 反而在12月19日凌晨迎来第二次Intensity巅峰, Pressure降至最低915hPa, max wind 飙升至62m/s, 再次确立Super Typhoon地位. 这种在较高纬度海域再次急剧增强的现象较为罕见. 此后, 随着纬度进一步升高至20°N以N, 受cold air及垂直风切变影响, intensity 迅速崩溃, 48h内从Super Typhoon weakened into Tropical Depression, 最终 at 12月21日消散.
Comparison of historical periods
Compared with Typhoon Rai from 2016, which was also the 15th named storm of its year, Rai in 2021 had overwhelmingly greater intensity. The 2016 typhoon peaked only as a tropical storm, with a minimum central pressure of 996 hPa, making it a relatively weak tropical cyclone. By contrast, the 2021 typhoon reached super typhoon strength twice and achieved an exceptionally low central pressure of 915 hPa and maximum winds of 62 m/s. The difference in intensity was substantial. Rai in 2021 was a severe typhoon, with an energy release and destructive potential far exceeding those of its 2016 namesake.
Typhoon Rai routes
| Time | Position | Intensity | Wind · Pressure | Move toward |
|---|
| 12-12 08:00 | 4.7°N
144.9°E | Tropical Depression | 13 m/s
1002 hPa | - |
| 12-13 17:00 | 5.65°N
140.2°E | Tropical Storm | 19 m/s
996 hPa | WNW |
| 12-14 17:00 | 7.8°N
135.4°E | Severe Tropical Storm | 28 m/s
982 hPa | WNW |
| 12-15 17:00 | 9.05°N
130.85°E | Typhoon | 40 m/s
960 hPa | WNW |
| 12-16 11:00 | 9.8°N
126.9°E | Super Typhoon | 62 m/s
915 hPa | WNW |
| 12-17 05:00 | 10.2°N
121.7°E | Severe Typhoon | 46 m/s
948 hPa | W |
| 12-17 23:00 | 10.55°N
118.2°E | Severe Typhoon | 45 m/s
950 hPa | WNW |
| 12-18 05:00 | 11.05°N
116.6°E | Severe Typhoon | 46 m/s
948 hPa | WNW |
| 12-18 11:00 | 11.15°N
115.4°E | Severe Typhoon | 50 m/s
940 hPa | WNW |
| 12-18 17:00 | 11.5°N
114.2°E | Super Typhoon | 55 m/s
930 hPa | NW |
| 12-18 23:00 | 12°N
112.9°E | Super Typhoon | 60 m/s
920 hPa | W |
| 12-19 05:00 | 12.9°N
111.8°E | Super Typhoon | 62 m/s
915 hPa | NW |
| 12-19 11:00 | 13.6°N
111.1°E | Super Typhoon | 60 m/s
920 hPa | NNW |
| 12-19 17:00 | 14.4°N
110.6°E | Super Typhoon | 53 m/s
935 hPa | N |
| 12-19 23:00 | 15.4°N
110.6°E | Severe Typhoon | 45 m/s
950 hPa | N |
| 12-20 05:00 | 16.2°N
110.6°E | Typhoon | 38 m/s
962 hPa | N |
| 12-20 11:00 | 17.6°N
110.9°E | Severe Tropical Storm | 32 m/s
978 hPa | N |
| 12-20 17:00 | 18.85°N
111.55°E | Severe Tropical Storm | 26 m/s
988 hPa | NNE |
| 12-20 23:00 | 19.35°N
112.25°E | Tropical Storm | 20 m/s
998 hPa | NNE |
| 12-21 05:00 | 20.2°N
113.3°E | Tropical Depression | 16 m/s
1005 hPa | NE |
| 12-21 14:00 | 21.5°N
115.2°E | Tropical Depression | 13 m/s
1008 hPa | NE |
Sampled rows shown; all 119 track points are available on the interactive map or via the public API .
FAQ
Typhoon Rai is the next typhoon in 2021.
Typhoon Rai’s international code is 202122. It was the 22nd named typhoon of 2021, with the international name RAI.
What is the highest level of Typhoon Rai?
Typhoon Rai peak intensity is Super Typhoon, max wind 62m/s, minimum central pressure 915 hPa.
Is there a typhoon RaiLandfall?
According to records, Typhoon Rai is not in our coastal landfall.
Where can I view typhoon Rai's live track map?
TyphoonSays (taifengshuo.com) provides typhoon Rai's Track history map, multinational meteorological agency Forecast comparison, windshield range with IntensityTrend, page address: https://taifengshuo.com/typhoon/202122.
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