Characteristics of Typhoon Noru
Track and Movement Characteristics
Typhoon Noru (201705) 的生命史长达20天, 整体路径呈现出显著的“W进—停滞回旋—NE转 toward ”的复杂形态. formed初期, 系统自Northwest Pacific远洋 toward W, at 7月23日抵达151.9°E附近后, 路径出现明显异常. 数据显示, 从7月24日至7月30日, Typhoon 中心在141.5°E至158.4°E, 23.4°N至28.5°N的广阔海域内进行了长Time的回旋与摆动, 甚至出现了短暂的E退现象 (如7月26日经度回跳至158.4°E) . 这种罕见的滞留行为导致其移速缓慢, 为Intensity的积蓄提供了充足的Time窗口. 8月1日后, 受引导气流改变影响, Noru结束回旋, 加速 toward NW, 随后在接近Japan列岛时转 toward NE, 最终 at 8月7日先后LandfallJapan四国岛室户 Citycoastal 及Japan本州地区, 并继续 toward NE direction深入高纬度海域直至消散.
Intensity evolution and historical comparison
Noru's intensity evolution was characterized by a long lifespan and multiple peaks. During its looping phase, the system intensified rapidly, with minimum central pressure falling from 970 hPa on July 30 to 945 hPa on August 1 and maximum winds increasing to 48 m/s, reaching severe typhoon status. Although the data identify its peak intensity as a super typhoon, with a pressure of 935 hPa and winds of 52 m/s, the observation series show that it maintained strong typhoon intensity, at 33–40 m/s, until shortly before landfall. At landfall in Japan, it had weakened to typhoon strength.
Compared with previous storms of the same name, 2017 Noru was significantly stronger than its 2011 counterpart, which peaked as a tropical storm with a central pressure of 992 hPa, and its 2004 counterpart, which peaked as a tropical storm with a central pressure of 990 hPa. This indicates greater destructive potential. However, its peak intensity was slightly lower than that of 2022 Noru (202216), which reached a minimum pressure of 915 hPa. What distinguished 2017 Noru was its exceptionally long life span and complex offshore looping track, which sharply contrasted with most typhoons that passed through rapidly and reflected the unique atmospheric circulation conditions that year.
Typhoon Noru trajectory
| Time | Position | Intensity | Wind · Pressure | Moving Toward |
|---|
| 07-20 02:00 | 26.4°N
161.2°E | Tropical Depression | 13 m/s
1008 hPa | - |
| 07-21 14:00 | 28.2°N
156.9°E | Tropical Storm | 18 m/s
1004 hPa | WNW |
| 07-22 14:00 | 28.7°N
153.2°E | Tropical Storm | 20 m/s
998 hPa | W |
| 07-23 14:00 | 28.2°N
151.2°E | Severe Tropical Storm | 30 m/s
980 hPa | SW |
| 07-24 14:00 | 26.8°N
152.9°E | Typhoon | 40 m/s
960 hPa | ESE |
| 07-25 14:00 | 25.9°N
157.5°E | Typhoon | 40 m/s
960 hPa | ENE |
| 07-26 14:00 | 29°N
157.1°E | Typhoon | 35 m/s
970 hPa | NW |
| 07-27 14:00 | 31°N
150.6°E | Typhoon | 35 m/s
970 hPa | W |
| 07-28 14:00 | 28.8°N
144.4°E | Typhoon | 33 m/s
975 hPa | SW |
| 07-29 14:00 | 26.3°N
142.2°E | Severe Tropical Storm | 30 m/s
980 hPa | SSW |
| 07-30 14:00 | 23.4°N
141.5°E | Typhoon | 35 m/s
970 hPa | S |
| 07-31 14:00 | 22.9°N
139.9°E | Super Typhoon | 52 m/s
935 hPa | WNW |
| 08-01 14:00 | 24°N
137.7°E | Severe Typhoon | 45 m/s
950 hPa | NW |
| 08-02 14:00 | 25.8°N
136°E | Severe Typhoon | 45 m/s
950 hPa | NW |
| 08-03 14:00 | 27.9°N
134.1°E | Severe Typhoon | 42 m/s
955 hPa | NW |
| 08-04 11:00 | 28.6°N
131.25°E | Typhoon | 39 m/s
962 hPa | NW |
| 08-05 05:00 | 29.4°N
130.45°E | Typhoon | 38 m/s
965 hPa | NNE |
| 08-05 23:00 | 30.15°N
130.2°E | Typhoon | 36 m/s
970 hPa | NNE |
| 08-06 17:00 | 31.4°N
131.9°E | Typhoon | 33 m/s
975 hPa | NE |
| 08-07 17:00 | 34.4°N
135.5°E | Severe Tropical Storm | 29 m/s
981 hPa | NE |
| 08-08 20:00 | 38.5°N
138.6°E | Tropical Depression | 15 m/s
992 hPa | NNE |
| 08-09 08:00 | 39.3°N
139.3°E | Tropical Depression | 13 m/s
994 hPa | NE |
Sampled rows shown; all 123 track points are available on the interactive map or via the public API .
FAQ
Noru is the 2017 Typhoon.
The international code for Typhoon Noru is 201705, which is the 5th Typhoon of 2017, the international name NORU.
What is the most powerful Typhoon Noru?
Typhoon Noru peak intensity is Super Typhoon, max wind 52m/s, minimum central pressure 935 hPa.
Where is the Typhoon Noru Landfall?
2017-08-07 09:00:00 in Japan Citycoastal Landfall; 2017-08-07 16:00:00 in JapanLandfall.
Where can I view typhoon Noru's live track map?
TyphoonSays (taifengshuo.com) provides typhoon Noru's Track history map, multinational meteorological agency Forecast comparison, wind range with IntensityTrend, page address: https://taifengshuo.com/typhoon/201705.
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