The autumn rain front is moving north little by little, and there is a risk of warning-level heavy rain over a wide area from Tohoku to southern Kyushu and the Amami region.

2026/09/06 18:29

The autumn rain front is stationary in the south of Honshu. Very warm and humid air from the tropics is flowing toward the front, and the front is becoming more active in the Pacific Ocean region.



In addition, as of 3:00 pm today, the 6th (Sunday), Typhoon No. 24 is moving slowly eastward west of Minami Daito Island. Typhoon No. 24 will continue to move toward the northeast at a slow speed, but it is expected to turn into a tropical cyclone after 3:00 pm tomorrow, the 7th (Monday).



Meanwhile, near Honshu, warm, humid air brought in by the typhoon is flowing toward the front, and the front is expected to move northward little by little starting tonight. As a result, rain will become heavier over a wide area from western Japan to eastern Japan and the Tohoku region. There is a risk of warning-level heavy rain over a wide area from Tohoku to southern Kyushu and the Amami region into tomorrow, the 7th (Monday).

In particular, there is a risk that a linear precipitation band will occur in the Kanto-Koshin and Tokai regions from tonight until the morning of the 7th, and in the Tohoku region from early morning to late at night on the 7th.
When a linear rain belt occurs, heavy rain continues in the same area, and the risk of serious landslides, flooding, and river flooding that can be life-threatening increases rapidly.




According to the current forecast, the peak of the rain is expected to occur from tonight until the morning of tomorrow, the 7th (Monday) in the Kanto-Koshin and Tokai areas. In the Kanto-Koshin and Tokai regions, heavy rain is expected to occur during the morning commuting hours, significantly impacting transportation. Please pay attention to the latest traffic information.



After that, the area of heavy rain is expected to move northward across the Tohoku region. On the Pacific side of the Tohoku region, there will be localized areas with extremely heavy rain of over 50mm per hour.



Please be extremely cautious of landslides, flooding of low-lying areas, and rising and flooding rivers. The situation may worsen during the dark hours from late tonight until dawn on the 7th, so please avoid unnecessary outings as much as possible and stay safe indoors. Also, please pay attention to disaster prevention information such as evacuation information released by local governments.

Also, from the 8th (Tuesday) onward, the autumn rain front will remain stationary near Honshu, and it is expected that there will be many rainy days nationwide. Depending on the position of the front and the degree of development of rain clouds, there is a possibility of locally heavy rain even after the 8th (Tuesday), so please be sure to check the latest weather information that will be updated in the future.

Linear precipitation band forecast for half a day ahead in Kanto and Tokai; atmospheric instability as front moves northward

2026/09/06 12:42

An autumn rain front is extending from the southern coast of Honshu to the east of Japan, passing near the Izu Islands.
The front is expected to remain mostly stationary near the Izu Islands today, the 6th, and then move north toward Honshu into the 7th. The atmospheric conditions will be extremely unstable due to the influence of the front and warm, humid air flowing towards the front from Typhoon No. 24 near the Nansei Islands, leading to heavy rain in some places through the 7th.





Today, at 10:44 a.m., the Japan Meteorological Agency announced a half-day-a-day forecast for linear precipitation bands.
In the Kanto-Koshin and Tokai regions, it is predicted that
a linear precipitation band will occur, rapidly increasing the risk of heavy rain disasters.



Please be on high alert for flooding/flooding of low-lying land and underpasses,
rising and overflowing rivers, and landslides.
Also, please pay attention to disaster prevention weather information that will be announced in stages and information such as "Kikikuru" that can be viewed from the Japan Meteorological Agency website.

[Linear rain belt half a day ahead forecast] Linear rain belt may occur in Kanto-Koshin region and Tokai region

2026/09/06 12:20

Today, the 6th (Sunday), the Japan Meteorological Agency announced a "half-day-ahead forecast for linear precipitation bands," stating that there is a possibility that linear precipitation bands will form in the Kanto-Koshin and Tokai regions in the future, and the risk of heavy rain will rapidly increase.

A linear precipitation belt is a phenomenon in which well-developed cumulonimbus clouds form one after another, causing heavy rain to continue in similar locations. When linear rain bands occur, the risk of life-threatening heavy rain disasters such as serious landslides, flooding, and river flooding increases rapidly, making it extremely dangerous.

In the south of Honshu, the autumn rain front continues to remain stationary. Until yesterday, the 5th (Saturday), the tropical cyclone that was moving north over the sea south of Honshu had become obscured, but Typhoon No. 24 is moving at a slow speed over the sea east of Okinawa.





Warm, humid air is flowing towards the Autumn rain front, activating frontal activity, and the front is expected to slowly move northward from tonight until tomorrow the 7th.
In the Kanto-Koshin and Tokai regions, rain clouds will develop from tonight until the morning of the 7th (Saturday), and extremely heavy rain of over 50mm per hour will fall in some places.

The following are the regions and periods where linear precipitation bands may occur and the risk of heavy rain disasters may increase rapidly.

Kanto-Koshin region Tokyo region From late night of the 6th to before noon of the 7th
Kanto-Koshin region Izu Islands From before noon of the 6th to early morning of the 7th
Kanto-Koshin region Saitama Prefecture From late night of the 6th to early noon of the 7th
Kanto-Koshin region Kanagawa Prefecture From late night of the 6th to early noon of the 7th
Kanto-Koshin region Chiba Prefecture From late night of the 6th to before noon of the 7th
Tokai region, Shizuoka prefecture From early evening of the 6th to early noon of the 7th
Tokai region, Aichi prefecture From early evening of the 6th to early morning of the 7th
Tokai region, Mie prefecture From the beginning of the night of the 6th to the morning of the 7th,

Please further increase your preparedness for heavy rain and carefully check the disaster prevention weather information and Kikikuru risk distribution that will be announced in stages.

Today, the 6th (Sunday), it will rain from Kyushu to the southern part of Tohoku. There is a risk of heavy rain in the Kinki region and southern Tohoku region from this late afternoon until tomorrow the 7th (Monday).

2026/09/06 07:35

Today, the 6th (Sunday), the autumn rain front will gradually move northward. Heavy rain is expected to occur in western and eastern Japan, mainly on the Pacific side, and there will also be periods of rain on the Sea of Japan side. It looks like the weather will require an umbrella when going out.



Also, there will be heavy rain in some parts of the Kinki region and southern Tohoku region from this late into tomorrow, the 7th (Monday). Particularly in the Kanto region, it is likely that some places will receive as much rain as September in a normal year. Strict vigilance must be taken against landslides, flooding of low-lying areas, and rising and flooding rivers. In addition, there is a possibility that a linear precipitation band may occur in the Izu Islands from noon today on the 6th until dawn on the 7th tomorrow.




The predicted precipitation in each area is as follows.

[Rain Forecast]
The predicted 24-hour precipitation from 6:00 on the 6th to 6:00 on the 7th is high in the Kanto-Koshin region,
250mm
Tokai region 300mm
Kinki region 200mm
Shikoku region 150mm
Southern Kyushu 150mm
/ After that, the predicted 24-hour precipitation from 6 o'clock on the 7th to 6 o'clock on the 8th will be high in some places,
Tokai region 200 mm
Kinki region 1 It is expected to be 20mm
, Tohoku region, 200mm
, Kanto region, 150mm
, Izu Islands, 100mm

.

On the other hand, in Hokkaido and northern Tohoku, which are within the high-pressure zone, the sun will reach us today, and there will be no major changes in the weather.
Even if it's blisteringly hot during the day, you'll feel cool in the mornings and evenings. Please take care of your physical condition as your physical sensation will change significantly.

It will rain in many places in northern Tohoku tomorrow.

The autumn rain front is heading north again, and there is a risk of heavy rain in Kyushu and Tohoku from tomorrow 6th (Sunday) to 8th (Tuesday)

2026/09/05 22:48

Typhoon No. 24 will head south of Okinawa until the 6th (Sunday), then make a U-turn and slowly move northward near the Nansei Islands until the evening of the 7th (Monday), gradually turning into a tropical cyclone. Additionally, another tropical cyclone south of Japan is expected to continue moving north.



Additionally, the front that is stationary near the southern coast of Honshu is expected to remain mostly stationary until the 6th (Sunday), and gradually move northward on the 7th (Monday). Warm, moist air from around typhoons and tropical cyclones will flow toward the front, making the front very active.



Extremely heavy rain accompanied by thunder and lightning will fall on the Pacific coast of Okinawa, Amami, Kyushu and Tohoku into the 7th (Monday), with the risk of warning-level heavy rain.




After that, the total rainfall may increase until the 8th (Tuesday) depending on the path of the typhoon (or tropical cyclone) and the movement of the front.

The expected precipitation is as follows:

[Rain Forecast]
Expected 24-hour precipitation up to 6:00 pm on the 6th will be heavy in areas
Kanto-Koshin region 15 0mm
Tokai region 200mm
Kinki region 150mm
Shikoku region 120mm
r Southern Kyushu 180mm
Amami region 80mm
Okinawa region 150mm

After that, the predicted 24-hour precipitation from 6:00 PM on the 6th to 6:00 PM on the 7th is expected to be 200 mm
in the Kanto-Koshin region. Tokai region 300mm
Kinki region 200mm
Shikoku region 200mm
Kyushu Southern area 120 mm
Tohoku region 200 mm
24-hour precipitation is high in the Kanto-Koshin region, 80 mm
, Tokai region, 120 mm
, and the Kinki region. It is expected to be 100mm
in the Shikoku region, 100mm
in the Tohoku region, and 80mm

in the Tohoku region.

There will be heavy rain in some places, mainly on the Pacific side of eastern Japan, such as the Kanto and Tokai regions, from the 7th (Monday) to the 8th (Tuesday), exceeding the average rainfall in a single month in September. Please be extremely careful about landslides, flooding of low-lying land, flooding of roads, and rising river waters.

The autumn rain front is expected to slowly move northward, with heavy rain at warning level expected to peak around the 7th in wide areas of western and eastern Japan.

2026/09/05 14:02

The autumn rain front is stationary in the south of Honshu, and Typhoon No. 24 is heading south in the East China Sea with late warnings.
There is a tropical cyclone in the south of Japan, and it is expected to move northward at a faster pace as it approaches the autumn rain front.
The autumn rain front, which has been stationary south of Honshu due to the influence of the tropical cyclone moving northward, is expected to move northward little by little from around the 6th to the 7th.



For this reason, heavy or very heavy rain with thunder is expected to occur in some places, mainly on the Pacific side of western and eastern Japan. Tomorrow, on the 6th, it will gradually rain in western Japan and the Pacific side of eastern Japan, and on the 7th, heavy rain is expected, especially on the Pacific side of eastern Japan. The area of rain is expected to gradually spread to the Tohoku region.



As of noon today, the 5th (Saturday), the forecast is that the peak of the rain will be from the night of the 6th (Sunday) to the middle of the morning on the 7th (Monday). In particular, heavy rain is expected in the Pacific side of eastern Japan, including the Kanto and Tokai regions, and it is likely that the timing of the heavy rain will coincide with commuting hours. There is a risk of heavy rain reaching a warning level, including in plains and urban areas.

Also, depending on the trends of the autumn rain front, Typhoon No. 24, and tropical cyclones, rain may continue after the 9th, and the total rainfall may increase further.



Past heavy rains have loosened the ground in some areas, making landslides more likely to occur even with the slightest amount of rain.Be wary of landslides, and be careful of inundation of low-lying areas and rising or overflowing rivers.
Also, please be aware of the impact of heavy rain on transportation, and be sure to check the latest weather information and typhoon information that will be updated in the future.

Record-breaking heavy rain in Yakushima, Kagoshima Prefecture; strict vigilance continues for landslides, river rises and flooding

2026/09/05 12:34

Today, the 5th (Saturday), Typhoon No. 24 is moving slowly in the East China Sea, and the autumn rain front is stationary south of Honshu. Additionally, a tropical cyclone is heading north to the south of Honshu.
Warm, humid air from typhoons and tropical cyclones is flowing toward the autumn rain front, and some places in southern Kyushu are experiencing record-breaking heavy rain.

In Yakushima, Kagoshima Prefecture, rain continued to fall due to Typhoon No. 24 and the stationary autumn rain front, and linear precipitation bands formed one after another late at night on the 4th the previous day and early in the morning on the 5th today. In Onoma, where the AMeDAS rain gauge is located, 485.5 mm of precipitation was observed in the 24 hours up to 11 a.m. on the 5th (approximately 1.7 times the normal precipitation in September), and as of 11 a.m. on the 5th, the AMeDAS rain gauge in Yakushima had recorded 423.0 mm, which is equivalent to 450.7 mm of precipitation for one month in September. Although it is a region with a lot of rain, more rainfall fell in one day than the average amount of rainfall in September in one month.

Due to this heavy rain, a temporary level 5 heavy rain special warning (switched to a warning around 7:50 a.m.) and landslide special warning were announced for Yakushima Town, Kagoshima Prefecture, just after 5 a.m. today, Saturday, the 5th.
(*At around 11:30 a.m. on the 5th, the special landslide warning changed to "landslide danger warning" and the heavy rain warning changed to level 2 "heavy rain advisory.")



Typhoon No. 24 is expected to move southward in the East China Sea, and the autumn rain front is expected to remain stationary south of Honshu. It is expected that moist air from typhoons and tropical cyclones will continue to flow toward the front. In southern Kyushu, it will continue to rain intermittently even after today, and in some places it will be heavy rain accompanied by thunder. There is a risk that the rain will continue and the total amount of rainfall will increase further.



The ground has already become loose in some places due to heavy rain, and even a small amount of rain could cause landslides. Please continue to be extremely cautious of landslides. Also, please avoid approaching dangerous slopes and flooded rivers.

Weather for the week: Next week will be a week of many cloudy and rainy days, with the autumn rain front taking center stage. Widespread risk of warning-level heavy rain on the 7th.

2026/09/05 12:30

Near Japan, the autumn rain front is likely to stay near Honshu into next week, and there will be many cloudy and rainy days over a wide area.



As of 9 o'clock, Typhoon No. 24 is heading south north of Kumejima, and the autumn rain front is extending from southern Kyushu to the southern coast of Honshu.



The typhoon is expected to move south until tomorrow the 6th (Sunday) and pass near the Nansei Islands. There is a risk that it will then change course from east to north in the south of Japan and move north toward Japan. Additionally, there is a tropical cyclone in the south of Japan, which is expected to move northward to the south of Honshu into tomorrow, the 6th (Sunday). As typhoons and tropical cyclones move northward, a front that has stalled near the southern coast of Honshu will slowly move northward from tomorrow 6th (Sunday) to 7th (Monday), and is expected to stall near Honshu next week.



Looking at the weekly weather forecast, there are many cloudy and rainy days across the country due to the influence of the autumn rain front, so it looks like it will be a week when umbrellas will be useful.
Rain clouds are likely to develop especially on the Pacific side, and there is a risk of widespread warning-level heavy rain on the 7th (Monday). In areas such as Hokuriku and southern Kyushu, where the ground has become loose due to heavy rains, even a small amount of rainfall could increase the risk of landslides. Please be careful of landslides and rising river waters.
Even after the 8th (Tuesday), it will be susceptible to the effects of autumn rain fronts and low pressure systems, and total rainfall may increase mainly from the Pacific side of eastern to western Japan. Be aware of disasters caused by long rains and prepare early by cleaning gutters and checking hazard maps.

Weather for today, the 5th (Saturday): Heavy rain warning for southern Kyushu to Okinawa

2026/09/05 06:04

The autumn rain front is expected to stay on the southern coast of western and eastern Japan. Rain will fall mainly on the Pacific side and the Kanto region. Southern Kyushu, which has already experienced heavy rain, needs to be on guard against landslides and flooding. Northern Japan, which is covered by high pressure, will have many areas where the sun will reach.



The autumn rain front will move further south and the rainy area will be smaller than yesterday, but it looks like it will be a rainy day on the Pacific side. Due to the continuous flow of warm and humid air from Typhoon No. 24, there is a risk of heavy rain from southern Kyushu to Okinawa. We need to be on guard against landslides, rising and flooding rivers, and flooding of low-lying land.
Although there are many clouds on the Sea of Japan side, there are few places where it rains, and you can expect to see occasional sunny spells. It will be hot and humid during the day as the sun shines through.
The weather in the Kanto region is likely to be dull throughout the day. Widespread rain is possible in the morning, with occasional showers possible in the afternoon. Please take an umbrella with you when you go out.
Northern Japan will be covered in high pressure and will have many sunny days. The morning is chilly and it feels like autumn. During the day, the sun will shine and the temperature will rise, and the daily temperature difference is expected to increase. Please adjust your clothes appropriately.

National weekly weather from 9/5 (Sat) to 9/11 (Fri)

2026/09/04 20:10

Due to Typhoon No. 24 and the autumn rain front, it looks like it will be a week of widespread rain. In some places, such as Hokuriku and southern Kyushu, the ground has become loose due to previous rains, so please be on guard for new disasters. Additionally, the heat is expected to subside in eastern and western Japan, giving it a bit of an autumn feel.



The autumn rain front is expected to continue moving north and south and remain near Honshu. It will continue to be rainy mainly in western and eastern Japan.
Until around the 7th (Monday), moist, warm air from Typhoon No. 24 will flow into the front, causing heavy rain, especially on the Pacific side. Additionally, a low pressure system is expected to form or pass over the front, and there is a risk of heavy rain in the Kanto region as well.
There are places in Hokuriku and southern Kyushu that have experienced heavy rains, where the ground is loose, so you need to be especially careful about landslides, flooding of low-lying areas, and rising river waters.
Typhoon No.24 is wandering around the Nansei Islands. Okinawa and Amami, which are close to typhoons, should be on guard for heavy rain, strong winds, and high waves over the weekend. Typhoon No. 24 is expected to turn into a tropical cyclone around the 8th (Tuesday).
As the autumn rain front moves southward, it looks like autumn will be felt to the north of the front. There will be no severe residual heat next week, and the maximum temperature is expected to be around 30c in both eastern and western Japan.
The location of the front and the path of the typhoon are subject to change, so please check the latest information.