[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.

Weather forecast for today, the 9th (Sunday): The Nansei Islands will continue to experience rough weather; around Honshu, watch out for sudden changes in weather from the afternoon, especially inland.

2026/08/09 06:54

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



Okinawa/Amami is moving out of the storm area of Typhoon No. 13, but the typhoon is moving slowly and there are expected to be places where extremely strong winds blow into tomorrow. The weather will continue to be severe and rough along the coast. Please be careful of strong winds and high waves.
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.



The heat around Honshu is severe from Tohoku to Kyushu, and there are likely to be places with extremely hot days of over 35c. Be careful not to get heat stroke, drink plenty of water and take adequate breaks.



In the afternoon, atmospheric conditions will be unstable due to cold air in the upper atmosphere, rising temperatures during the day, and moist air. The probability of lightning strikes is high across a wide area from northern to eastern Japan, with the probability of lightning occurring in some places exceeding 90%, especially in the southern Tohoku, northern Kanto, and Koshin regions. In the afternoon, rain clouds and thunderclouds are likely to develop mainly inland and along mountains, and there are likely to be some places where there will be very heavy rain accompanied by thunder. Be careful of sudden changes in the weather in the afternoon, and be careful of sudden rain and thunderstorms even in the plains.
Lightning, tornadoes, and other violent gusts may occur, so if you see signs of a sudden change in weather, such as approaching black clouds or hearing thunder, please take precautions to ensure your safety by evacuating to a sturdy building.

There is a risk of a linear rain belt forming in Niigata Prefecture. Be careful of flooding in low-lying areas and rising water levels in rivers.

2026/08/08 15:54

At 3:08 p.m., the Japan Meteorological Agency announced the immediate forecast for a linear precipitation zone, saying, ``In Chuetsu, Niigata Prefecture, there is an increasing possibility that a linear precipitation zone will occur within the next three hours, and extremely heavy rain will continue to fall in the same place.There is a risk that the risk of life-threatening disasters will rapidly increase.''
At 3:20 p.m., it was announced that ``heavy rain is falling in the vicinity of Nagaoka City, Niigata Prefecture, at a rate of about 100 mm per hour, and the risk of disaster is rapidly increasing'', announcing a record-breaking heavy rain event in a short period of time.

The atmospheric conditions in Niigata Prefecture are extremely unstable, and thunderclouds are developing near Chuetsu.
AMeDAS observed a torrential rain of 89.0 mm at Sumon in Uonuma City, Niigata Prefecture in the hour ending at 3:20 p.m., making it the heaviest rainfall ever observed at this location.

In Kaetsu, Chuetsu, and Joetsu, please be careful of flooding of low-lying land and rising water in rivers until late at night on the 8th today, and in Chuetsu, be careful and be on guard against landslides until late at night on the 8th today.
Also, in Niigata Prefecture, there is a risk of lightning, tornadoes, severe gusts of wind, and hail late into the evening of today, the 8th, so please be careful.

#What is record-breaking heavy rain information

It is announced by the Japan Meteorological Agency when short-term heavy rain that only occurs once every few years is observed and analyzed.

If the rainfall standards are met and the "danger" (purple) status of
Kikikuru (danger distribution) appears during the heavy rain warning announcement, the name of the observation point, city, town, etc. where the
heavy rain was observed will be clearly stated.

Rainfall standards are determined for each prefecture/prefecture forecast area, based on the historical record of first or second place in hourly rainfall.

#Record heavy rain information has been announced for areas where...

It means that heavy rain is falling that can lead to landslides, inundation of low-lying land, and flooding.

Let's check where the risk of disaster is actually increasing
Kikikuru (risk distribution).

[Typhoon No. 15] Risk of approaching Tohoku to Kanto during Obon; be careful of future course

2026/08/08 12:09

Typhoon No. 15, which formed near Wake Island on the 5th, is moving far east of Japan as of 9:00 am. The
typhoon is moving west-northwest at a speed of approximately 25 km/hr, the atmospheric pressure at the center of
is 994 hectopascals, the maximum wind speed is 18 m, and the maximum instantaneous wind speed is 25 m. In some areas, strong winds are blowing and high waves with swells are occurring.



Typhoon No. 15 is expected to change course to the west this evening and move at a speed of approximately 30 kilometers per hour into
9th.
Then, it is expected to turn northwest from the 10th to the 11th,
and reach the coast of Sanriku.
The strength of the typhoon is not expected to change significantly, but
the area affected may expand due to slight changes in its course.

Depending on how the typhoon develops and its future course,
there is a risk that it will affect the Tohoku and Kanto regions around the middle of Obon.



If you are planning to return home or go on an excursion, please
check the latest typhoon information and transportation status frequently, and
strive to ensure safety.

Please continue to pay attention to the latest information regarding typhoons.

Large and extremely strong typhoon No. 13 moving westward in the East China Sea, fear of fierce winds blowing in Okinawa into tomorrow 9th

2026/08/08 11:59

Typhoon No. 13, which is large and extremely strong, is located approximately 130 km northwest of Kumejima as of 10 a.m. today, Saturday, August 8, and is moving northwest at a speed of approximately 15 km per hour.

==================
Center location Approximately 130km
northwest of Kumejima Size Large size
Strength Very strong
Movement Northwest 15km/h
Central pressure 945 hPa
Maximum wind speed 45 m/s (near the center)
Maximum instantaneous wind speed 60 m/s
===================

Okinawa has been in a storm area since yesterday (7th), with Kesa observing extremely strong winds of up to 27.7 m/s at Kitahara in Kumejima Town, Okinawa Prefecture, and 23.3 m/s at Asimine in Naha City, Okinawa Prefecture. In addition, the amount of rain that has fallen so far has been large, with 48-hour rainfall reaching 456.5 mm in Naze, Amami City, Kagoshima Prefecture, and 373.0 mm in Koniya, Setouchi Town, Kagoshima Prefecture.

As of 11:00, a level 4 landslide warning has been issued for the Amami region of Kagoshima Prefecture and the northern part of the main island of Okinawa Prefecture, and a storm warning has been issued for the Okinawa main island region and Kumejima and Miyakojima, Okinawa Prefecture.



The typhoon is expected to maintain its large size and strength and move westward in the East China Sea into tomorrow, the 9th (Sunday).
The typhoon is moving slowly and there is a risk that the effects of rain and wind will last for a long time, and the Okinawa region will continue to experience ferocious to very strong winds into tomorrow, the 9th (Sunday), resulting in heavy rain and heavy rain. In addition, today, the 8th, the atmospheric conditions will be extremely unstable due to the effects of the typhoon itself and the rain clouds that have developed around it, with heavy rain of more than 30mm per hour expected in some places.

In the Okinawa region, please be on high alert for landslides and strong winds today, the 8th, and continue to be on high alert for storm surges and high waves with swells through tomorrow, the 9th (Sun). Please be extremely cautious of landslides in the Amami region today, the 8th.
Ferocious winds are expected, especially in the Okinawa region, where there is a risk of injury from flying objects and overturning of moving trucks. Please refrain from going out unless necessary, and stay away from windows when indoors to avoid strong winds. Strict vigilance is required as there is a risk of flooding and flooding in low-lying areas near coasts and river mouths due to high tides.




#Expected wave height (with swells)
+Expected wave height for today, 8th
Southern Kyushu 6m
Amami region 8m
Okinawa region 10m
+Expected wave height on tomorrow 9th (Sunday)
Amami region 7m
Okinawa region 9m

#Expected wind strength
+Maximum wind speed (maximum instantaneous wind speed) expected on today 8th
Am Miku region 23m/s (35m/s)
Okinawa region 30m/s (45m/s)
+Maximum wind speed (maximum instantaneous wind speed) expected for tomorrow 9th (Sunday)
Okinawa region 25m/s (35m/s)

#Expected amount of rain (in places with a lot of it)
+24-hour precipitation expected by 12:00 tomorrow 9th (Sunday)
Southern Kyushu 120mm
Amami region 120mm
Okinawa region 120mm

Large typhoon No. 15 (Chang Hong) is likely to make landfall in eastern and northern Japan from the 11th (Tuesday) to the 12th (Wednesday) of the new week.

2026/08/08 10:13

Typhoon No. 15 is expected to approach or make landfall in eastern and northern Japan at the beginning of next week, which could affect people returning home and traveling during the Obon period. Although there is still a wide range of predictions, please pay close attention to future trends and check the latest weather information.



As of 6:00 a.m. today, Saturday, the 8th, Typhoon No. 15 is in the far east of Japan, moving westward at a speed of 25 kilometers per hour.
The central pressure is 994hpa, the maximum wind speed is 18m/s, and the maximum instantaneous wind speed near the center is 25m/s.

-----------------------------
Typhoon No. 15 08th 06:00
Type Typhoon
Size Large
Strength -
Existence area Far east of Japan
Center location 31 30'N (31.5 )
159 05'E (159.1 )
Direction of travel, speed West 25 km/h (18 kt)
Central pressure 994 hPa
Maximum wind speed 18 m/s (35 kt)
Maximum instantaneous wind speed 25 m/s (50 kt)
----------------------------------

Typhoon No. 15 is still highly uncertain, but as it continues to develop, it is likely to move northwestward and approach and make landfall in northern Japan, mainly the Tohoku region, by the 11th (Tuesday). After that, it is expected to pass through the Sea of Japan toward the San'in coast by Wednesday the 12th, and turn into a tropical cyclone.

As it coincides with the Obon holiday rush to travel and return home, depending on the path of the typhoon, transportation such as trains, flights, and expressways may be affected. Check the latest weather information.

Large and extremely strong typhoon No. 13 Okinawa and Amami are on strict alert today against strong winds and heavy rain

2026/08/08 07:34

Typhoon No. 13, which is large and extremely strong, was located north-northwest of Kumejima at 6 a.m. today, Saturday, August 8th, and is moving slowly westward. The atmospheric pressure at the center is 945 hectopascals, the maximum wind speed near the center is 45 m, and the maximum instantaneous wind speed is 60 m.



---------------------------------------
Type Typhoon
Size Large
Intensity Very strong
Existence area Approximately 60km north-northwest of Kumejima
Center location 26 50'N (26.8 )
126 35'E (126.6 )
Direction and speed West Slow
Central pressure 945 hPa
Maximum wind speed near center 45 m/s (85 kt)
Maximum instantaneous wind speed 60 m/s (120 kt)
---------------------------------------------

The typhoon is approaching the main island of Okinawa and will continue to maintain its large size and extremely strong power as it moves westward through the East China Sea until tomorrow, the 9th.
Ferocious winds and storms will continue to blow in the Okinawa and Amami regions today, and severe flooding is expected. In addition, due to the influence of the typhoon itself and the rain clouds that have developed in the surrounding area, there will be very heavy rain, heavy rain, and heavy rain in some places.





[Wave forecast]
Wave height expected on the 8th
Southern Kyushu 6 meters with swells
Amami region 10 meters with swells
Okinawa region 10 meters with swells
On the 9th Expected wave height
Amami region 7 meters with swells
Okinawa region 9 meters with swells

[Wind forecast]
Maximum wind speed (maximum instantaneous wind speed) expected on the 8th
Amami region 25 meters (35 meters)
Okinawa region 35 meters (50 meters)
Maximum wind speed (maximum instantaneous wind speed) expected on the 9th
Okinawa region 25 meters (35 meters)

[Rain forecast]
8th 6:00 to 9th 6:00 The predicted 24-hour precipitation by then is high in some areas:
Southern Kyushu 120 mm
Amami region 120 mm
Okinawa region 180 mm
If linear precipitation bands occur, there is a risk that localized rainfall will increase further.


In the Okinawa region, please be on high alert for strong winds today, the 8th (Saturday), and high waves with swells into tomorrow, the 9th (Sunday). In the Amami region, please be extremely careful on the 8th due to high waves with swells and be on guard against strong winds. Also, in southern Kyushu, please be on guard for high waves with swells today, the 8th (Saturday). In the Okinawa region, there are places where strong winds are blowing that could cause some utility poles to collapse and parts of buildings to be blown over a wide area. Please refrain from going out unless necessary, and stay away from windows when indoors to avoid strong winds.
Today, the 8th (Saturday), please be extremely careful in the Okinawa region to avoid landslides, flooding of low-lying areas, and rising and flooding rivers, and in the Amami region to be extremely careful in preventing landslides. In addition, residents of the Okinawa region are advised to remain on high alert for high tides until tomorrow the 9th (Sunday).

Even with the arrival of the "first day of autumn," the severe heat continues. Be careful of heatstroke as tomorrow, the 8th (Saturday), will continue to be extremely hot.

2026/08/07 18:07

Today, the 7th (Friday), is ``Rishu,'' a period that marks the beginning of autumn according to the calendar. However, it was far from autumn, and it was a day of severe heat across the country.



The highest temperature observed by AMeDAS until 5 pm today, the 7th (Friday), was 39.6c in Ota City, Tottori Prefecture, and Tottori City, which was the hottest on record, breaking the record for the highest temperature in observation history.
In Hamada City, Shimane Prefecture, the maximum temperature reached 39.0c around 3:00 p.m., breaking the record for the highest temperature in recorded history.
As of 5:00 p.m., there were no locations where a "severely hot day" of 40 degrees Celsius or higher was observed, but the number of locations observing extremely hot days reached 218, and severe heat spread across a wide range from northern to western Japan.
In northern Japan, it was a midsummer day in Sapporo with a temperature of 32.8c, almost 6c higher than normal, and in Morioka, the temperature rose to 35.2c, making it an extremely hot day.



Tomorrow, the 8th (Saturday), temperatures will be high mainly in western Japan due to the warm air brought in by Typhoon No. 13. There are places where the heat can be dangerously high, so please take precautions against heat stroke.
The predicted maximum temperature is 38c in Sasebo, Nagasaki Prefecture, 37c in Osaka, and 37c in Tottori. Even in eastern Japan, it is expected to become hotter than today, the 7th (Friday), with temperatures expected to reach 36 degrees Celsius in Kumagaya City, Saitama Prefecture, 35 degrees Celsius in Maebashi and Kofu, and 34 degrees Celsius in Tokyo. Due to the front passing through northern Japan, the heat will be moderate in Hokkaido. The predicted maximum temperature in Sapporo is 25c, which is expected to be much lower than today.

Typhoon No. 13 stalls near Okinawa, becoming ``very strong'' again Beware of linear rain belt

2026/08/07 17:42

Typhoon No. 13 stalled near the main island of Okinawa, then intensified again and became a large and "very strong" force.

Typhoon No. 13, a large and extremely strong typhoon, was near Nago City at 16:00 on the 7th and is moving westward at a speed of approximately 15 kilometers per hour. The atmospheric pressure at the center is 935 hectopascals, the maximum wind speed near the center is 45 m/s, the maximum instantaneous wind speed is 60 m/s, and the area within 330 km to the northeast and 185 km to the southwest of the center is experiencing stormy winds of over 25 m/s.



It is expected to move westward in the East China Sea through the 9th.
Very strong and ferocious winds are expected to blow in the Okinawa region, Amami region, and southern Kyushu into the 9th, causing heavy and violent storms.
In addition, until the 8th, the atmospheric conditions will be extremely unstable due to the influence of the typhoon itself and the rain clouds that have developed around it, with heavy to very heavy rain expected to occur in some places.

In southern Kyushu, Amami, and Okinawa regions, there is a possibility that linear precipitation bands will occur and the risk of heavy rain disasters will increase rapidly.

Amami region: From the evening of the 7th to late at night
Okinawa main island region: From the evening of the 7th to the morning of the 8th

Please further increase your preparations for heavy rain and pay attention to the latest weather information and risk distribution such as Kikikuru.