Tonight tonight (Sun) "Heavy rain on an alarm level" in Kanto and other areas, and traffic will be affected; the end of the week will be "just like the rainy season"; every day on extremely hot days [Weekly weather]

2025/06/14 12:47

Today, Saturday, June 14th, the Japan Meteorological Agency announced that "it is expected to have begun in the Tohoku region (both in the southern and northern regions)."

This means that the rainy season has begun in all regions, except for Hokkaido, where there is no observation of the rainy season.

The rainy season front is heading north to the vicinity of the Korean Peninsula, and today a low pressure system occurred on the front.

From tonight to tomorrow morning, extremely warm and humid air flows towards the low pressure system and fronts that move eastward through the Sea of Japan, and the source of rain clouds, there is a risk of heavy rain over a wide area.



This is the forecast for tonight's rain clouds (estimated precipitation from 6pm to 9pm).

Wild Japan will be causing heavy rain and thunderstorms everywhere, and in Shikoku, there will be places where "very heavy rain" like waterfalls are falling red.

In western Japan, rain peaks during dark times at night, so before heavy rain, try to stay in a safe place, such as away from cliffs and rivers.



This active rain cloud will hit Tokai and Kanto until the morning of the 15th (Sunday), and could cause extremely heavy rain with thunder.

After the rainy season begins, the rain will be the most heaviest, and from tonight to tomorrow morning, we will need to be vigilant in eastern Japan for landslides and river flooding.


This may affect transportation such as the bullet train, so please check the latest traffic and weather information when you go out the morning tomorrow.



The areas where heavy rain warnings may be issued from tonight to tomorrow morning are a fairly wide area, from the Kyushu to the Hokuriku region.

In the west and eastern Japan, you need to be careful and be careful of heavy rain at the warning level from the evening of the 15th (Sunday) and in Kyushu, you need to be careful of heavy rain at the warning level from the evening of the 16th (Monday).



However, from Tuesday the 17th, the power of the Pacific High Pressure in the summer will suddenly increase, and midsummer air is expected to flow from the south.

National "high temperatures" are expected to be "very high" next week, and there is a risk that the maximum temperature will exceed 35 C every day, especially in the inland areas of Kanto, Koshin, and will be a hot day.


We need to be more careful about the heat than heavy rain next week.



If we look at the highest temperature in the Kanto-Koshin region, we will be seeing midsummer days above 30c from Monday, the 16th.

In particular, from Tuesday the 17th to Wednesday the 18th, the hottest days of Kumagaya, Kofu and Maebashi exceed 35 C, and the rainy season has suddenly ended, making it the heat of the summer heat.


There is a high humidity during the rainy season, and the risk of heat stroke increases rapidly.


Please drink water before you get thirsty, use a hat or parasol outdoors, and walk away from direct sunlight, so you need to be even more careful about heat stroke next week.

[Tokai] Atmospheric unstable. Beware and beware of landslides, flooding of low land, rising rivers, and gusts of wind

2025/06/14 08:39

A rainy season front extends from the southern seas of Japan through Kyushu, and the Yellow Sea is stretched out.
Today, the rainy season front will move north to the Sea of Japan, and a low pressure will occur in the western part of the Sea of Japan on the front, and it is expected to move northeasterly through the Sea of Japan on the 15th.



As this low pressure system and warm, humid air flows towards the front,
The atmosphere conditions in the Tokai region will become unstable, and there will be some areas where heavy rain with thunder and extremely heavy rain will fall from the beginning of the night of the 14th to the morning of the 15th, causing heavy rain.



If rain clouds develop more or stagnate than expected, heavy rain may occur at an alarm level.
Please be careful and be careful of landslides, flooding of low landslides, and flooding of rivers.

[Rain forecast]
There is a high hourly rainfall expected on the 14th,
Aichi Prefecture 30mm
Gifu Prefecture 30mm
Mie Prefecture 40mm




/ Shizuoka Prefecture 30mm

/
/ Aichi Prefecture 40mm
/ Gifu Prefecture 50mm
/ Mie Prefecture 40mm
/ Shizuoka Prefecture 50mm
/ Shizuoka Prefecture 50mm
/ Shizuoka Prefecture 50mm
/
/ The high 24 hourly rainfall expected from 6am on the 14th to 6am on the 15th,
/ Aichi Prefecture 120mm
/ Gifu Prefecture 150mm
/ Mie Prefecture 120mm
/ Shizuoka Prefecture 150mm
/ [Disaster Prevention]
/ Beware and beware of landslides, flooding of low landslides, and rising rivers.
Also be careful of lightning strikes, gusts of wind and hail fall.



Atmosphere unstable. Beware of landslides, flooding of low landslides, flooding of rivers, and gusts of winds
Warning
Warning of landslides, flooding of low landslides, flooding of rivers, lightning, and gusts of winds

[Hokuriku] Beware and caution against landslides, flooding, and river flooding.

2025/06/14 08:38

Today, the rainy season front will move north to the Sea of Japan, and a low pressure will occur in the western part of the Sea of Japan on the front, and is expected to travel northeast through the Sea of Japan on the 15th.



With this low pressure and warm, humid air flowing towards the front,
/am, the atmosphere is unstable, causing heavy rain with lightning, and in some places it may cause heavy rain.


If the rain clouds stagnate or develop more than expected, there is a risk of heavy rain at the level of an alarm level.
In the Hokuriku region, beware and beware of landslides, low-cost flooding, and river flooding from the beginning of the evening of the 14th to the afternoon of the 15th.



[Rain forecast]
The predicted 1-hour precipitation on the 14th is a high location,
Niigata Prefecture 20mm
Toyama Prefecture 30mm
Ishikawa Prefecture 30mm
Fukui Prefecture 20mm


Niigata Prefecture 30mm
Toyama Prefecture 30mm
Ishikawa Prefecture 30mm
Fukui Prefecture: 20mm

The 24-hour precipitation expected from 6:00 on the 14th to 6:00 on the 15th is a high place, and
: Niigata Prefecture: 100mm
: Toyama Prefecture: 120mm
: Ishikawa Prefecture: 100mm
: Fukui Prefecture: 80mm

[Disaster Prevention Items]
: In the Hokuriku region, beware and beware of landslides, low-cost flooding, and river flooding from the beginning of the night of the 14th to the afternoon of the 15th.

[Kinki] Atmosphere unstable. Be careful of landslides, flooding of low lands, and flooding of rivers

2025/06/14 08:14

A rainy season front extends from the southern seas of Japan through Kyushu, and the Yellow Sea is stretched out.
Today, the rainy season front will move north to the Sea of Japan, and a low pressure will occur in the western part of the Sea of Japan on the front, and it is expected to move northeasterly through the Sea of Japan on the 15th.



As warm, humid air flows towards the fronts and low pressures, air condition will become unstable in the Kinki region.
In the Kinki region, be careful of landslides, low-cost land flooding, and river flooding from the beginning of the evening of the 14th to the evening of the 15th.



[Rain forecast]
The expected 1 hour precipitation from the 14th to the 15th is a high point,
Northern Kinki 20mm
Northern Kinki 40mm





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Kinki Southern: 150mm






/B: Thereafter, the 24-hour precipitation expected from 6am on the 15th to 6am on the 16th, and
High rainfall with local lightning is expected from the beginning of the night of the 14th to the dawn of the 15th.
Please be careful of landslides, flooding of low land, and flooding of rivers.
If the rain clouds develop more than expected, there is a possibility that heavy rain at the warning level will occur from the beginning of the night of the 14th to the evening of the 15th.

[Kyushu region] Heavy rain. Stay vigilant against landslides, beware of low land flooding, river flooding and flooding

2025/06/14 07:39

A rainy season front extends from the southern seas of Japan through Kyushu, and the Yellow Sea is stretched out.
Today, the rainy season front will move north to the Sea of Japan, and a low pressure will occur in the western part of the Sea of Japan on the front, and it is expected to move northeasterly through the Sea of Japan on the 15th.
Words warm, humid air will flow towards the front and low pressure, making the atmosphere very unstable.



For this reason, heavy rain with localized lightning or extremely heavy rain can fall in the Kyushu region, leading to heavy rain.
There is also a risk of severe gusts of wind such as lightning strikes or tornadoes.


There are areas where the ground has been loose due to heavy rain so even with little rain, the danger may increase.
In the Kyushu region, be careful of landslides late on the night of the 14th, and be careful of low land flooding, river flooding and flooding.
Also be careful of severe gusts of wind, such as lightning strikes and tornadoes.

[Rain forecast]
There is a high 1 hour precipitation projected on the 14th,
: Yamaguchi Prefecture 40mm
: Fukuoka Prefecture 50mm
: Saga Prefecture 50mm
: Nagasaki Prefecture 50mm
: Oita Prefecture 50mm
: Kumamoto Prefecture 40mm
: Miyazaki Prefecture 50mm
: Kagoshima Prefecture (excluding Amami Region): 50mm
: Kagoshima Prefecture (excluding Amami Region): 50mm
: The high 24 hour precipitation projected between 6am on the 14th and 6am on the 15th,
: Yamaguchi Prefecture 120mm
: Fukuoka Prefecture 180mm
: Saga Prefecture 150 Milli
Nagasaki Prefecture 180mm
Oita Prefecture 150mm
Kumamoto Prefecture 180mm
Miyazaki Prefecture 180mm
Kagoshima Prefecture (excluding Amami region) 180mm

Then, the 24-hour precipitation expected from 6:00 on the 15th to 6:00 on the 16th will be high,
: Fukuoka Prefecture 60mm



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Beware of severe gusts of wind, such as lightning strikes and tornadoes.
If there are signs of developing cumulonimbus clouds approaching, try to ensure safety by moving inside the building.

Will Typhoon No.1 change its appearance and affect Japan Even if Typhoon No. 2 is not a different tropical cyclone, stimulating the rainy season front, and there are fears of heavy rain, as warnings are constantly continuing

2025/06/13 13:00

#Accompanying Typhoon No. 1 Storms will change shape and affect Japan
#Another tropical cyclone that will stimulate the rainy season front
#Accompanying Typhoon No. 2 is a new tropical cyclone that will stimulate the rainy season front



#Accompanying Typhoon No. 1 Storms will change shape and affect Japan
As of 9am today, Friday the 13th, Typhoon No. 1 (Wootip) is moving north-northwest through the Gulf of Tonkin with the storm.
Tomorrow, the 14th (Saturday), the course will change north-northeast in the Gulf of Tonkin, and tomorrow, the 15th (Sunday) will reach South China.
It is expected to progress to the East China Sea at 9am on Monday the 16th, and become a tropical cyclone.

Typhoon No. 1 loses its power and becomes a tropical cyclone, but around Monday the 16th, warm, humid air from the tropical will stimulate the rainy season front, where it stagnates near Japan.
Please be careful of the latest information as there is a risk of heavy rain at an alarm level, especially in western Japan.



#Another tropical cyclone that doesn't become Typhoon No. 2: stimulates the rainy season front
Today, the 13th (Friday), a tropical cyclone is heading north around Taiwan, in addition to Typhoon No. 1.
This tropical cyclone is expected to not develop until the typhoon, so we proceed to the area near Hua Zhong, and will be unclear tonight.
However, the tropical cyclone and the warm, humid air around it have flowed into the rainy season front, which is stagnating near Japan, and the atmosphere is likely to become extremely unstable this weekend.
Even before Typhoon No. 1 approaches, the rainy season front seems likely to become more active, and there may be some risk of heavy warning-level rainfall every day.



#There are also places where heavy rain, which continues every day
On today, the 13th (Friday), the Japan Meteorological Agency has announced early warning information (possibility of warning grades), indicating that an alarm will be issued by the next five days, in two levels: high and medium.
Due to the effects of Typhoon No. 1 and another tropical cyclone and rainy season front, "high" and "medium" have been announced, mainly in Kyushu, from today, the 13th (Friday) to the 16th (Monday).
There is likely to be a risk of heavy rain, the warning level, continuing every day.
In addition, the ground has already loosened due to heavy rain.
Please be careful of landslides and other disasters, so be careful when you stay away from steep slopes or cliffs.

Temperatures will rise in northern Japan today; there will be many midsummer days next week. Be careful of heat stroke

2025/06/13 06:23

As the rainy season front will stagnate in western Japan today, there will be plenty of clouds in western and eastern Japan, making it likely to feel humid and humid. Be careful of heat stroke.
On the other hand, it is expected that the sun will arrive in northern Japan and the temperature will rise. The highest temperature in Sapporo is expected to be 25 C 7 C higher than the previous day.
Also, the temperature is 28 C in Yamagata and 27 C in Morioka, making it as cheerful as July. Please take care to manage your health as the temperature difference between the day will become larger.




Next week, the Pacific High Pressure Forces will strengthen and the rainy season front will move north.
The midsummer air will be covered in the south side of the front, and temperatures will rise nationwide, with many midsummer days expected to occur. In addition, there is a risk that the temperature will be extremely hot in the inland areas of eastern Japan with a maximum temperature of 35 C or higher. The highest temperature in central Tokyo is expected to be 31 C on the 16th and 33 C on the 17th and 18th.
In addition to the time when your body is not used to the heat, the humidity is high and the risk of heatstroke increases, so don't forget to take all measures against heatstroke, such as frequent hydration, salt replenishing, taking moderate breaks, and using air conditioning.

Weather today, Friday the 13th: The rainy season sky in western Japan; Northern Japan is mild sunny; Beware of showers in Kanto

2025/06/13 06:03

Today, the rainy season front is expected to continue to stagnate in western Japan, the 13th (Friday). Meanwhile, Northern Japan will be covered by high pressure.



Northern Japan and Hokuriku will be sunny and sunny. There are some clouds spreading out in the afternoon, but the weather is unlikely to fall apart. Please be careful of the difference in temperature between mornings and evenings and during the day.


The sky pattern in Kanto and Tokai is dominated by clouds. In the Kanto region, there is a possibility of showers, so it's safer to have a folding umbrella when you go out.


In western Japan, the rainy season continues and the rainy day is likely to fall. Please be careful of changes in the sky as the rain will increase locally and there is a risk of thunderstorms.

Typhoon + tropical cyclone = active rainy season front; warning-level heavy rain continues for a long period [Weekly Weather]

2025/06/12 12:04

Yesterday, the morning of Wednesday the 11th, Typhoon No. 1 (Wootip) occurred in the South China Sea, and after that, a "tropical cyclone" broke out in the east of the Philippines in the afternoon.



Typhoon No. 1 is quite far from Japan, but
Very warm and humid air around typhoons and tropical cyclones is expected to flow one after another towards the rainy season front, which is stagnating in Japan.

Tropical warm and humid weather causes active activity on the rainy season front, and heavy rain may last for a long time, especially in western Japan, where the front is stagnant for a long time.



Today, the 12th (Thursday), the rainy season front will gradually move north through the Kyushu region.

If we look at the 3-hour accumulated precipitation today, 3:00 to 6:00 pm, we expect to see active red rain clouds, mainly in northern Kyushu, such as Nagasaki, Saga, and Fukuoka.

Heavy rain with lightning falls overnight, and caution and caution is required for landslides and river flooding.



If tomorrow, the 13th (Friday), the rainy season front is expected to move north to the nearest Korean Peninsula.

For now, we are expecting a linearly developing rain cloud in the southern part of the Korean Peninsula, such as Busan, South Korea, but if the
vibrations from the front line north to south, there is a possibility that active rain clouds may be exposed to western Japan, such as
Kyushu.


The forecast for rain during the rainy season will change in detail, so please continue to pay attention to the latest rain information.



Today, Thursday the 12th - Friday the 13th, in northern Kyushu and Shikoku, and heavy
Alarm-level rain is expected to continue over a wide area in Kyushu, Chugoku and Shikoku regions from Saturday the 14th to Sunday the 15th.


In Kyushu, such as Kagoshima, there have already been many areas where the ground has been loosened due to heavy rain.


We need to be vigilant against landslides, even if there is a slight rainfall.
Please stay away from steep slopes and cliffs.



The rainy season front will suddenly move north from Saturday the 14th to Sunday the 15th, and
Rrain is expected to occur in the Tohoku region, which has not yet entered the rainy season.

Rain will continue in northern Japan until around Tuesday the 17th, but in western and eastern Japan, the sunny weather will gradually return next week.

It is expected to be "very high" for sunny days during the rainy season, and the weather is expected to be extremely hot at 35 C in Nagoya on Wednesday the 18th.


After heavy rain, it seems that you will need to be very careful about heat stroke.

Weekly weather: Weak rain in western and eastern Japan on weekends and weekends. Beware of severe heat after the week

2025/06/12 08:29

Yesterday, the 11th (Wednesday), Typhoon No. 1 broke out in the South China Sea. As of 6am today, Thursday the 12th, it is heading west and northwest in the South China Sea at a speed of 15km/h. In the future, the course is expected to change to a eastward direction and become a tropical cyclone around the 16th.
Also, yesterday, Wednesday the 11th, a tropical cyclone occurred in the east of the Philippines, moving northward.



Typhoon No. 1 and tropical cyclones are expected to have no direct impact on the area around Honshu, but warm, humid air caused by typhoons and tropical cyclones could stimulate activity on the rainy season front.



On the 13th, the rainy season front will move north in western Japan, and on the 14th, the rainy season front will move north to the Sea of Japan. As warm and humid air from tropical cyclones flows towards the rainy season front, rain will mainly occur in western Japan, with the prospect of widespread rains ranging from western Japan to eastern Japan.
Yesterday, on the 11th, the rainfall of 72 hours reached 514mm in Ibusuki City, Kagoshima Prefecture, marking the highest rainfall ever, marking the highest ever recorded value. There are areas in western Japan where the ground has been loose due to the effects of previous rain, so careful attention is required to occur in landslides.
On the 15th, rain will be widespread in eastern Japan, with local areas where heavy rain will be over 30mm per hour and extremely heavy rain will be over 50mm per hour. Please be careful when flooding low land or flooding on roads.


From the end of the week, the Pacific high pressure system will likely increase in the area around Honshu. As a result, the heat will be severe across a wide area from western Japan to eastern Japan, and many places will approach the extremely hot day at over 35 C. The 18th is a forecast for midsummer days with temperatures above 30 C from Sapporo to Kagoshima. You need to be careful about heat stroke. Whether indoors or outdoors, keep hydrated frequently, take plenty of breaks, and use air conditioning to prevent heat stroke.