Issued on 2025/09/17 01:00
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■ 「01日12時」 means 12:00 on the 1st of the month.
■ Tropical cyclones do not necessarily move along the lines connecting the centers of probability circles.
■ Probability circles show expected tropical cyclone center locations with a probability of 70% for individual forecast times, but do not indicate changes in scale.
■ Even after transition from a typhoon to a tropical depression or an extratropical low, hazardous phenomena such as heavy rain, strong winds and high waves may be observed. Pay attention to updated meteorological information such as warnings and advisories for heavy rain, strong winds and high waves.
1 kt (knot) = 1.852 km/h = 0.5144 m/s 1 NM (nautical mile) = 1.852 km |
<Analysis at 00 JST, 2025/09/17>
Intensity/Category | Tropical Depression |
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Center Position | 15.8N 122.4E |
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Direction and speed of movement | W 15km/h (8kt) |
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Central pressure | 1006hPa |
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Maximum wind speed near center | 15m/s (30kt) |
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Maximum wind gust speed | 23m/s (45kt) |
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<Forecast for 12 JST, 2025/09/17>
Intensity/Category | Tropical Depression |
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Center Position | 17.3N 121.9E |
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Direction and speed of movement | NNW 15km/h (8kt) |
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Central pressure | 1004hPa |
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Maximum wind speed near center | 15m/s (30kt) |
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Maximum wind gust speed | 23m/s (45kt) |
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Radius of probability circle | 100km (55NM) |
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<Forecast for 00 JST, 2025/09/18>
Intensity/Category | Tropical Storm |
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Center Position | 18.8N 121.1E |
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Direction and speed of movement | NNW 15km/h (8kt) |
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Central pressure | 1002hPa |
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Maximum wind speed near center | 18m/s (35kt) |
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Maximum wind gust speed | 25m/s (50kt) |
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Radius of probability circle | 130km (70NM) |
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<Forecast for 21 JST, 2025/09/18>
Intensity/Category | Tropical Storm |
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Center Position | 20.8N 118.3E |
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Direction and speed of movement | NW 15km/h (9kt) |
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Central pressure | 1000hPa |
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Maximum wind speed near center | 18m/s (35kt) |
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Maximum wind gust speed | 25m/s (50kt) |
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Radius of probability circle | 200km (110NM) |
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<Forecast for 21 JST, 2025/09/19>
Intensity/Category | Tropical Storm |
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Center Position | 22.0N 115.7E |
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Direction and speed of movement | WNW 15km/h (7kt) |
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Central pressure | 996hPa |
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Maximum wind speed near center | 20m/s (40kt) |
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Maximum wind gust speed | 30m/s (60kt) |
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Radius of probability circle | 260km (140NM) |
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<Forecast for 21 JST, 2025/09/20>
Intensity/Category | Tropical Storm |
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Center Position | 22.1N 113.8E |
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Direction and speed of movement | W Slow |
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Central pressure | 992hPa |
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Maximum wind speed near center | 23m/s (45kt) |
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Maximum wind gust speed | 35m/s (65kt) |
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Radius of probability circle | 330km (180NM) |
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<Forecast for 21 JST, 2025/09/21>
Intensity/Category | Tropical Storm |
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Center Position | 21.8N 110.8E |
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Direction and speed of movement | W 15km/h (7kt) |
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Central pressure | 996hPa |
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Maximum wind speed near center | 20m/s (40kt) |
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Maximum wind gust speed | 30m/s (60kt) |
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Radius of probability circle | 440km (240NM) |
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The information on this page is intended for those in Japan.