Typhoon No. 15 approaches Kanto region; warning of heavy rain and strong winds over wide area

2026/08/11 07:02

Typhoon No. 15 was located east of Iwaki City, Fukushima Prefecture at 6am on the 11th, and was moving west-northwest at a speed of approximately 35km/hr.

The typhoon is developing and moving westward, approaching the Kanto region on the afternoon of the 11th, and there is a risk of it making landfall.



In eastern Japan, which is close to the path of the typhoon, warm and humid air is expected to flow in.
Currently, there is cold air above the Kanto region, and due to this, the atmospheric conditions will be extremely unstable.

On the 11th, heavy to very heavy rain is expected to fall over a wide area from the Tohoku region to eastern Japan, with some localized areas expected to experience heavy rain.
Please be extremely cautious of landslides through the 12th.



Very strong winds will blow in the Tohoku region and eastern Japan, and there will be places on the Pacific side where there will be swells and severe winds.

Typhoon No. 15 is expected to move westward through eastern Japan and turn into a tropical cyclone on the Sea of Japan side of western Japan on the 12th.

[Rain Forecast]
Expected 24-hour precipitation from 6:00 on the 11th to 6:00 on the 12th will be heavy in the Tohoku region. 180mm
Kanto-Koshin region 150mm
Izu Islands 100mm

Then on the 12th from 6:00 to 13 The predicted 24-hour precipitation by 6 o'clock on Sunday is high in some places:
Tohoku region 120mm
Kanto-Koshin region 120mm
br Tokai region 150 mm

[Wind forecast]
Maximum wind speed expected on the 11th (maximum instantaneous wind speed)
Tohoku region Direction: 25 meters (35 meters)
Kanto-Koshin region 25 meters (35 meters)
Hokuriku region 18 meters (30 meters)
Tokai region 17 meters (30 meters)

Maximum wind speed expected on the 12th (max. Instantaneous wind speed)
Tohoku region 15 meters (25 meters)
Kanto-Koshin region 17 meters (30 meters)
Hokuriku region 18 meters (30 meters)
Tokai region 15 meters (25 meters)



[Wave forecast]
Expected wave height on the 11th
Tohoku region 7 meters with swells
Kanto region 7 meters With swells

Wave height expected on the 12th
Tohoku region 5 meters with swells
Kanto region 5 meters with swells

Typhoon No. 15 likely to land tomorrow; heavy rain and strong winds in eastern Japan

2026/08/10 19:24

Typhoon No. 15 was in the east of Japan at 6pm on the 10th and was moving north-northwest at a speed of approximately 20 km per hour.



The typhoon will gradually change course to the west as it continues to develop, and will approach the Kanto-Koshin region on the afternoon of the 11th, with the risk of making landfall. In eastern Japan, which is close to the typhoon's path, warm, humid air will flow in, and the atmospheric conditions will be extremely unstable due to the influence of cold air in the upper atmosphere.

On the 11th, heavy to very heavy rain is expected to fall over a wide area from the Tohoku region to eastern Japan, with some localized areas expected to experience heavy rain. In the Tohoku region, please be on high alert for landslides on the 11th. In the Tohoku and Kanto-Koshin regions, be wary of inundation of low-lying land, rising water levels and flooding of rivers.



Atmospheric conditions will be unstable in eastern Japan on the 11th, so please be careful of strong gusts such as lightning and tornadoes. If there are signs that a cumulonimbus cloud is approaching, please take precautions such as moving inside a building. There is also a risk of hail, so please be careful when managing crops and agricultural facilities.

On the Pacific side, there will be strong winds and swells, leading to severe conditions in some places. Please be on guard for strong winds and high waves accompanied by swells on the 11th in the Pacific side of the Tohoku region and the Kanto region.



[Rain Forecast]
24-hour precipitation expected from 18:00 on the 10th to 18:00 on the 11th (where there is a lot)
Tohoku region 150mm

24-hour precipitation expected from 18:00 on the 11th to 18:00 on the 12th (where there is a lot)
Tohoku region 120mm
Kanto-Koshin region 150 mm
Tokai region 100 mm
[Wind forecast]
Maximum wind speed expected on the 11th ( Maximum instantaneous wind speed)
Tohoku region 25 meters (35 meters)
Kanto region 25 meters (35 meters)
Hokuriku region Maximum wind speed (maximum instantaneous wind speed) expected on the 12th
Kanto region 15 meters (30 meters)
Hokuriku region 18 meters (30 meters)

[Wave forecast]
Wave height expected on the 11th
Tohoku region 8 meters with swells
Kanto region 7 meters with swells
Wave height expected on the 12th
Kanto region 5 meters with swells

The typhoon is expected to move westward through eastern Japan and turn into a tropical cyclone on the Sea of Japan side of western Japan on the 12th.
Even after turning into a tropical cyclone, there is a risk of severe weather near the cyclone.
Please pay attention to the latest information.

[Typhoon information] Typhoon No. 15 expected to approach and land in Tohoku-Kanto; possibility of severe storms

2026/08/10 14:59

Today, the 10th (Monday), Typhoon No. 15 is located in the east of Japan and is moving northwest at a speed of approximately 25 kilometers per hour.
After this, Typhoon No. 15 will change course to the west and will approach the Tohoku-Kanto region tomorrow, the 11th (Tuesday), and there is a risk that it will make landfall.

#Typhoon No. 15 10th (Monday) 12:00 p.m.
==================
Center location East of Japan
Moving direction and speed Northwest 25km/h
Central pressure 990hPa
Maximum wind speed 20m/s (near the center)
Maximum instantaneous wind speed 30m/s
==================



Typhoon No. 15 will continue to intensify and move westward, and there is a risk that it will approach the southern Tohoku and Kanto-Koshin regions in the afternoon of tomorrow, the 11th (Tuesday), and may make landfall. After that, it will approach the Hokuriku region from the night of the 11th (Tuesday) to the 12th (Wednesday).

The Pacific coast of Tohoku and the Kanto-Koshin region will experience heavy rain on the 11th (Tuesday) as the typhoon approaches, leading to heavy storms and heavy storms mainly at sea. Atmospheric conditions are expected to be extremely unstable due to the effects of warm, humid air flowing toward the typhoon and cold air above.

In the Hokuriku region, heavy rain is expected to occur in some places from the afternoon of the 11th (Tuesday) to the morning of the 12th (Wednesday), and strong winds are expected to blow mainly at sea but also on land.

Please note that the path of the typhoon is still uncertain, so please pay close attention to future typhoon information. Also, many people are planning to travel long distances during the Obon period. Transportation may be affected, so please check the latest information.


[Disaster Prevention Matters]
#Tohoku Pacific Side
Be on high alert for landslides caused by heavy rain from early afternoon to late evening on the 11th (Tuesday), and be on guard for flooding of low-lying areas, rising water levels, and flooding of rivers from before noon to late evening on the 11th (Tuesday).
Also, please be on guard for damage to buildings and traffic disruption due to strong winds from the morning of the 11th (Tuesday) until late at night, and at sea, from noon to late at night on the 11th (Tuesday), please be on guard for damage to ships and coastal facilities due to high waves accompanied by swells.

#Kanto-Koshin Region
Please be wary of strong winds and high waves accompanied by swells on the afternoon of the 11th (Tuesday).
From the afternoon of the 11th (Tuesday) to the 12th (Wednesday), there will be heavy rain with thunder in some places. If the rain clouds develop more than expected, or if the rain clouds continue to grow, there is a possibility of heavy rain reaching warning level.
Be careful of flooding in low-lying areas, rising river levels, and landslides, and be careful of lightning strikes, tornadoes, and other violent gusts.
If there are signs that a cumulonimbus cloud is approaching, please take precautions such as moving inside a building. There is also a risk of hail, so please be careful when managing crops and agricultural facilities.

#Hokuriku Region
Please be careful of flooding of low-lying areas, rising river waters, and landslides from the afternoon of the 11th (Tuesday) to the morning of the 12th (Wednesday), and strong winds from the evening of the 11th (Tuesday) to the morning of the 12th (Wednesday).

Weather for today, the 10th (Monday) Typhoon No. 13 is moving away, and Typhoon No. 15 is approaching

2026/08/10 06:30

Typhoon No. 13 is expected to head towards the continent, while Typhoon No. 15 is expected to move northward through the east of Japan and approach Honshu.



Due to the influence of the high pressure system extending from Primorye towards Sakhalin, many places on the Sea of Japan side will receive sunlight. On the other hand, on the Pacific side, there will be many hours of cloudy weather due to the influence of humid air. Winds will gradually become stronger on the Northeast Pacific side towards the end of the night. Please be careful of high waves in coastal areas. It will be safer if you prepare for a typhoon early.
There is a risk of sudden changes in the weather in eastern Japan from the afternoon. Please take a folding umbrella with you when you go out.
In eastern and western Japan, temperatures are expected to drop slightly, but it is expected to be extremely hot. Please be careful of heat stroke.
Typhoon No. 13 will move away from the mainland, but rain will remain in Okinawa. Be careful of the sideways rain. The waves will continue to be high, so please do not get close to the sea unnecessarily.

Weather for today, the 10th (Monday) Typhoon No. 13 is moving away, and Typhoon No. 15 is approaching

2026/08/10 06:29

Typhoon No. 13 is expected to head towards the continent, while Typhoon No. 15 is expected to move northward through the east of Japan and approach Honshu.



Due to the influence of the high pressure system extending from Primorye towards Sakhalin, many places on the Sea of Japan side will receive sunlight. On the other hand, on the Pacific side, there will be many hours of cloudy weather due to the influence of humid air. Winds will gradually become stronger on the Northeast Pacific side towards the end of the night. Please be careful of high waves in coastal areas. It will be safer if you prepare for a typhoon early.
There is a risk of sudden changes in the weather in eastern Japan from the afternoon. Please take a folding umbrella with you when you go out.
In eastern and western Japan, temperatures are expected to drop slightly, but it is expected to be extremely hot. Please be careful of heat stroke.
Typhoon No. 13 will move away from the mainland, but rain will remain in Okinawa. Be careful of the sideways rain. The waves will continue to be high, so please do not get close to the sea unnecessarily.

How many typhoons are approaching Japan

2026/08/09 22:34

We are currently in the middle of typhoon season! ! Three typhoons are occurring near Japan. When a typhoon makes landfall, the area is directly hit by strong winds and heavy rain, potentially causing significant damage. However, surprisingly few typhoons make landfall. First, let's talk about the typhoon's landfall.

Typhoon landfall, approach, and passage have different definitions.
"Landfall" refers to when the center (eye) of a typhoon reaches the coastline of Hokkaido, Honshu, Shikoku, and Kyushu.
"Approaching" refers to the state in which the center of the typhoon approaches within a 300 km radius of the location or area. "Approaching" is used not only when approaching mainland Japan, but also when approaching islands such as Okinawa and the Ogasawara Islands.
"Passage" is used when the center of a typhoon crosses a small island or peninsula and returns to the sea in a short period of time. For example, when passing through the main island of Okinawa, it is expressed as "passing through" rather than "landing."

Actually, 608 typhoons occurred from 2001 to 2025. On average, about 24 typhoons occur each year. Among them, 292 typhoons approached. Approximately half of the typhoons approached within a 300km radius of Japan. There were 75 typhoons that made landfall, making up only about 10% of the total.

When it comes to where typhoons land, the overwhelming majority are in Kagoshima Prefecture. Next are Kochi prefecture, Wakayama prefecture, Shizuoka prefecture, and Nagasaki prefecture. The only typhoon that made landfall in 2026 was Typhoon No. 6, which made landfall in Wakayama Prefecture.

As of 2026, 16 typhoons have occurred. This year, the El Nino phenomenon is expected to occur and there will be more typhoons. As the number of typhoons increases, the number of typhoons that make landfall will also increase. Let's take proper measures and prepare for the coming typhoon.

[Typhoon information] Typhoon No. 16 occurs near Ogasawara, becoming a triple typhoon again

2026/08/09 17:59

At 3:00 pm today, the 9th (Sunday), a tropical cyclone became Typhoon No. 16 (Peiro) near Ogasawara at 21 degrees north latitude and 142 degrees east longitude.
Typhoon No. 16 is located near Ogasawara as of 3:00 pm and is moving eastward at a speed of approximately 20 kilometers per hour. After this, it is expected to move toward the waters near Minamitorishima on the 10th (Monday), change its course to the east-northeast, and move toward the waters near Wake Island on the 12th (Wednesday), becoming a tropical cyclone.
For now, there will be no direct impact on areas near Honshu.

#Typhoon No. 16 9th (Sunday) 3:00 pm
==================
Center location Ogasawara vicinity
Moving direction, speed East 20km/h
Central pressure 998hPa
Maximum wind speed 18m/s (near the center)
Maximum instantaneous wind speed 25m/s
==================



Currently, there are three typhoons around Japan: Typhoon No. 13, Typhoon No. 15, and Typhoon No. 16.

Large and extremely strong Typhoon No. 13 (Dolphin) is expected to make landfall in central China on the 10th (Monday).
It is expected to gradually move away from the Okinawa and Amami regions, but in the Okinawa region, please be on high alert for high waves with swells on the 9th (Sunday), and on the 10th (Monday). In the Amami region, please be careful of high waves with swells on the 9th (Sunday).
In addition, in the Okinawa region, on the 9th (Sunday), be careful of landslides, flooding of low-lying areas, and rising river waters, and be careful of thunder, tornadoes, and other strong gusts. Please be careful of strong winds in the Okinawa and Amami regions.

Typhoon No. 15 (Chang Hong)'s predicted course is still subject to change, but there is a risk that it will approach the Tohoku Pacific side on the afternoon of the 11th (Tuesday) and make landfall into the 12th (Wednesday). Depending on the typhoon's path and degree of development, there is a possibility of severe weather, including warning-level strong winds and heavy rain, especially in the Pacific Ocean side of the Tohoku region.
Please be careful of high waves on the Pacific coast of Tohoku on the afternoon of the 11th (Tuesday). In addition, in the Tohoku region, please be careful about strong winds, landslides caused by heavy rain, flooding of low-lying areas, and rising river waters on the 11th (Tuesday).
Please pay attention to typhoon information and disaster prevention information that will be announced in the future.

[Triple typhoon] Affects the weather during the Obon period - Typhoons No. 13, No. 15, Tropical cyclone

2026/08/09 13:19

Typhoon No. 13, which is large and extremely strong, is expected to maintain its strong strength on the 9th and move slowly westward through the East China Sea.



Extremely strong winds will continue in the Okinawa region into the 10th, and the sea will be flooded with heavy rain. Heavy storms are expected in the Amami region on the 9th. Additionally, on the 9th, atmospheric conditions in the Okinawa region will become extremely unstable due to the influence of rain clouds that have developed around the typhoon, and there is a risk of intermittent heavy rain.

The typhoon is expected to gradually move away from the Okinawa and Amami regions, but we still need to be on guard against disasters caused by heavy rain, strong winds, and high waves.

Meanwhile, Typhoon No. 15 is moving westward over the eastern seaboard of Japan, and is expected to change its course to the north-northwest on the 10th, approaching the coast of Sanriku, and heading northwest off the coast of Sanriku on the 11th. The weather during the Obon holiday may be affected, so if you are planning leisure activities in the mountains, rivers, or the sea, please consider reconsidering your plans based on the latest forecast.



Furthermore, a new tropical cyclone that is expected to develop into a typhoon is moving eastward near Ogasawara.



Depending on its path, Japan may be affected, so pay attention to the latest typhoon information.

[Triple typhoon] Affects the weather during the Obon period - Typhoons No. 13, No. 15, Tropical cyclone

2026/08/09 13:19

Typhoon No. 13, which is large and extremely strong, is expected to maintain its strong strength on the 9th and move slowly westward through the East China Sea.



Extremely strong winds will continue in the Okinawa region into the 10th, and the sea will be flooded with heavy rain. Heavy storms are expected in the Amami region on the 9th. Additionally, on the 9th, atmospheric conditions in the Okinawa region will become extremely unstable due to the influence of rain clouds that have developed around the typhoon, and there is a risk of intermittent heavy rain.

The typhoon is expected to gradually move away from the Okinawa and Amami regions, but we still need to be on guard against disasters caused by heavy rain, strong winds, and high waves.

Meanwhile, Typhoon No. 15 is moving westward over the eastern seaboard of Japan, and is expected to change its course to the north-northwest on the 10th, approaching the coast of Sanriku, and heading northwest off the coast of Sanriku on the 11th. The weather during the Obon holiday may be affected, so if you are planning leisure activities in the mountains, rivers, or the sea, please consider reconsidering your plans based on the latest forecast.



Furthermore, a new tropical cyclone that is expected to develop into a typhoon is moving eastward near Ogasawara.



Depending on its path, Japan may be affected, so pay attention to the latest typhoon information.

[Typhoon information] Typhoon No. 13 is moving slowly, Okinawa and Amami continue to be careful of strong winds and high waves. Typhoon No. 15 may make landfall in Tohoku

2026/08/09 07:38

Today, the 9th (Sunday), large and extremely strong Typhoon No. 13 is moving westward in the East China Sea.

Typhoon No. 15 9th (Sunday) 6:00 AM
==================
Size Large
Strength extremely strong
Center location North of Yonaguni Island
Traveling Speed West Slow
Central pressure 945hPa
Maximum wind speed 45m/s (near the center)
Maximum instantaneous wind speed 60m/s
==================



Okinawa/Amami has moved out of the storm area of Typhoon No. 13, but the typhoon is moving slowly and there are expected to be some places where extremely strong winds will blow into tomorrow. Coastal areas will continue to experience severe storms and stormy weather. Please be careful of strong winds and high waves until tomorrow the 10th.
In addition, rain clouds from the typhoon will be gathering, and there are likely to be places from southern Kyushu to Okinawa experiencing heavy rain accompanied by thunder. Please be careful of landslides caused by heavy rain and flooding of low-lying areas.



Major typhoon No. 15 is currently moving westward over the eastern seaboard of Japan.

Typhoon No. 15 9th (Sunday) 6:00 AM
==================/brSize Large
Center location: East of Japan
Traveling speed: West-southwest 25km/h
Central pressure: 994hPa
Max. Large wind speed: 18 m/s (near the center)
Maximum instantaneous wind speed: 25 m/s
===================

Typhoon No. 15 will continue to intensify as it moves northwest, and may make landfall in the Tohoku region on the 11th (Tuesday), which is a mountain day. Typhoon No. 15 is then expected to take an easterly course and head into the Sea of Japan, turning into a tropical cyclone around the 13th.
Due to the large range of the forecast circle, there is still some range in the predicted course, but please pay attention to the latest typhoon information that will be updated in the future. Please pay attention to the latest traffic information, as transportation may be affected during public holidays and Obon holidays.