Approaching the low pressure system: Hokkaido is strictly wary of heavy rain disasters tomorrow, the 27th

2025/08/26 07:01

A low pressure system with a front is located near the Primcoean province, moving east-northeast. As this low pressure system develops, it will progress from the northern Sea of Japan to the Sea of Okhotsk tomorrow, tomorrow, the 27th, with a warm front going north through the Hokkaido region today, the 26th, and a cold front going south through northern Japan tomorrow, the 27th. As warm, humid air flows towards the fronts and low pressures, air condition is expected to become extremely unstable in northern Japan.



[Rain Prediction]
In northern Japan, heavy rain will likely fall with lightning or very heavy rain, leading to heavy rain. Previous heavy rains can increase the risk of landslides and flood disasters with less than normal rain. In addition, in the Soya region of Hokkaido, the total rainfall for tomorrow, the 27th may exceed the average month of August.

#Expected amount of rain (in places)
+24-hour precipitation expected by the dawn tomorrow, the 27th
Hokkaido: 180mm
Tohoku: 100mm
24-hour precipitation expected by the dawn tomorrow, the 28th
Hokkaido: 80mm
Tohoku: 100mm

[Disaster Prevention Issues]
In the Hokkaido region, be careful of landslides, low-level flooding, river flooding and flooding, and in the Tohoku region, be careful of landslides, low-level flooding, river flooding and flooding. Also, be careful of severe gusts of wind in northern Japan, such as lightning strikes and tornadoes. If there are signs of developing cumulonimbus clouds approaching, try to ensure your safety by moving inside a sturdy building. There is a risk of falling hail, so be careful when managing agricultural crops and agricultural facilities.

Weather today, Tuesday the 26th: Beware of heavy rain in northern Japan; the heat continues in eastern Japan to western Japan

2025/08/26 06:33

Today, the 26th (Tuesday), a low pressure system with a front is expected to move towards the area around Hokkaido. Hokkaido is likely to rain easily and umbrellas are useful. Be careful of extreme heat and thunderstorms in eastern and western Japan.



It has been raining in Hokkaido since the morning in northern Hokkaido, and the range of rain is expected to gradually expand. The falling rate will be particularly strong, especially in the north of Hokkaido, which is close to the low pressure system, and there is a risk of heavy rain. Also, at night, the rain will be heavier, mainly on the Sea of Japan side, and there will be some areas where heavy rain will fall. Extreme vigilance is required for landslides, flooding in lowlands, flooding and flooding of rivers.

The weather in northern Tohoku is downhill. Even if the sun reaches the sun during the day, it will start to rain on the Sea of Japan side at night, so if you are late to come home, please bring rain gear.


In the southern part of Tohoku to western Japan, the sun will be bright and bright.
The harsh heat continues, and it is expected to be extremely hot in various places. Be careful of heat stroke.
In the afternoon, rain clouds will develop locally, mainly along the mountains, so there will be some sudden thunderstorms. You should also be careful about changes in the sky pattern.

Even in places where there are extremely heavy rains like the waterfalls in Kanto and Koshin, the atmosphere is unstable today and tomorrow afternoon.

2025/08/25 11:22

Today, the 25th (Monday), in Kanto, Koshin, the atmosphere will become unstable from before noon to late at night due to the warm, humid air surrounding the edge of the high pressure system and the rising temperature during the day.
It is expected to be extremely unstable locally.



In Koshin, there are areas where extremely heavy rain, like a 50mm waterfall per hour, with lightning, and in the Kanto region, there are areas where heavy rain falls like a 40mm bucket per hour, mainly in the north.
The expected 24-hour precipitation is 80mm in Koshin and northern Kanto, and 60mm in southern Kanto.
If the rain clouds develop more than expected, or if the developed rain clouds continue to show up, there is a risk of heavy rain at the warning level.


Also, tomorrow, the 26th (Tuesday), the atmosphere will be unstable in the afternoon.



Rain clouds have developed mainly in Koshin, with some areas where extremely heavy rainfall of 50mm per hour is expected.

In Kanto, Koshin, beware and beware of landslides, flooding in lowlands, and rising rivers today, the 25th (Monday) and the afternoon of the 26th (Tuesday) and the afternoon of the 26th (Tuesday) are available.
Beware of severe gusts of wind, such as lightning strikes and tornadoes.

Weekly weather: The weather may be severe, mainly on the Sea of ??Japan side of the Northern Japan, around the 26th to 27th, and the heat will continue to be severe in the west and eastern Japan.

2025/08/24 07:33

From now on, the severe heat will continue every day on the western and eastern Pacific sides. Meanwhile, the weather in northern Japan is expected to change periodically.



Tomorrow, the 25th (Monday), the Pacific High Pressure Area will be strong in the area of Honshu, and the weather will be sunny and extremely hot, especially in the Pacific side of western Japan and eastern Japan. In the afternoon, humid air and rising daytime temperatures can cause unstable air conditions, causing sudden rain or thunderstorms. Please be careful of changes in the sky as cumulonimbus clouds that have not only been generated along the mountains, but also along the mountains, as they may flow into the plains, causing sudden heavy rain or thunderstorms.



/ Meanwhile, a cyclone with a front will stagnate from China to the Korean Peninsula, and is expected to develop along the Sea of Japan from around the 26th to the 27th to reach the Sea of Okhotsk. As a result, rain will occur on the Sea of Japan side of Northern Japan to Hokuriku, and the wind will be strengthened and the weather will be rough. In the Kanto region, the front will move southwards around the 27th, so there will be some areas where it will rain.


After that, the weather will change periodically in northern Japan, and in Hokkaido, it is expected that the highest temperature will be below 25 C in Sapporo and other places. The season will move forward a little earlier.

/BOn the other hand, it is expected that hot days will continue in eastern and western Japan, and it is expected that Nagoya and Osaka will be extremely hot every day. The temperatures tend to drop even at night, so be sure to properly prevent heatstroke, both day and night. This heat is likely to continue into the second half of September.

The heat continues today, the 24th (Sun) as well. In the afternoon, be careful of sudden changes in weather, mainly along the mountains and inland areas.

2025/08/24 06:50

A low pressure system on the front travels over Japan's East Sea, with the front running from North China to the Sea of Japan and from Tohoku to the East. In Akita Prefecture, heavy rain of 40mm was observed per hour at Oga Mayama at dawn.



On today, Sunday, the 24th, in the area around Honshu, rain will occur mainly in the morning, due to the front line, and there will be some areas where the rain will be intensified. It can also be accompanied by lightning, so be careful of lightning strikes.


From southeastern Tohoku to western Japan, it will be within the high pressure zone and will be sunny widely. The estimated maximum temperature during the day is often 35 C or higher, with 38 C expected for Maebashi, Kumagaya (Saitama Prefecture), Gifu and other areas, and 37 C expected for Nagoya and Tokyo. Inland areas are more likely to cause dangerous heat to exceed body temperatures, so be careful of heat stroke.



In the afternoon, the atmosphere will be unstable due to humid air and rising daytime temperatures, mainly along the mountains and inland. It seems there will be a severe thunderstorm around the beginning of the night, just after noon. Be careful of road flooding and river flooding, and if you enjoy leisure activities in mountains and rivers, be careful of changes in the sky. Also be careful of severe gusts of wind, such as lightning strikes and tornadoes.

The heat exit is not visible, and the heat is still severe even in September

2025/08/23 19:11

There is a low pressure system in the Sea of Okhotsk and the front is passing eastward from Hokkaido to northern Tohoku.
On the other hand, there is a high pressure system in the East Sea of Japan, spreading to western and eastern Japan.

Today, it was sunny and severe heat from southern Tohoku to Kyushu.
There were many places that were midsummer days, and there were many places that were extremely hot at 35 degrees Celsius, especially inland and in the areas on the Sea of Japan side.

As of 5pm, 737 locations nationwide on midsummer days with a temperature of 30 degrees or higher
and 172 locations on extremely hot days with a temperature of 35 degrees or higher.

In addition, there were two points in each observation location:
Karita District, Miyagi Prefecture, 37.4 degrees [Thailand record]
Yamada, Iwaki City, Fukushima Prefecture, 36.6 degrees

There were five points that were the number one in the history of the record in August:
Kesennuma City, Miyagi Prefecture: 36.6 degrees
Osaki City, Miyagi Prefecture: Kashimadai, 36.2 degrees
Osaka City, Miyagi Prefecture: Zao, 37.4 degrees
Onoshinmachi, Fukushima Prefecture: Onoshinmachi, 36.0 degrees [Thailand record]
Opennuma City, Iwaki City, Fukushima Prefecture: 36.6 degrees







There will be many sunny spots next day, and the harsh heat will continue, mainly in the southern Tohoku region and Kinki region.
Also, the following week will be sunny and slightly below the peak, but temperatures are expected to continue to remain hot in various places.









In addition, the monthly forecast announced the other day is expected to continue to be hot in September, and there is still no way out of sight for the heat.
In addition to health management such as preventing heat stroke, please be careful about managing agricultural products, livestock, etc.

Dangerous heat continues: areas where temperatures are exceeded, announced to 31 prefectures heatstroke warning alert

2025/08/23 06:45

Today, the 23rd will be a very sunny day from southern Tohoku to Kinki.
The estimated maximum temperatures are 31 C for Sapporo, 35 C for Sendai, 36 C for Tokyo, 36 C for Nagoya, 36 C for Osaka, 36 C for Kochi, 34 C for Fukuoka.
In addition, in Fukushima, Maebashi, Kumagaya, and other places, the temperature is dangerous to exceed 38 C, so perfect heat stroke prevention is essential.
In central Tokyo, if today is a hot day, it will be the sixth consecutive day of extreme heat.
There are many temperatures in northern Japan that are rising from the previous day, and it is expected to feel humid and humid during the day. Be careful of heat stroke.



The Ministry of the Environment and the Japan Meteorological Agency have issued heatstroke warning alerts from Tohoku to Western Japan, and have been announced for 31 prefectures.


In areas where a heatstroke warning alert has been issued, significantly higher temperatures can cause damage to human health due to heatstroke.
There are probably many people who plan to go out on their days off, but please refrain from activities during hot times as much as possible, and try to take frequent breaks, drink water and salt.
Also, use air conditioners indoors to ensure that you stay in a cool environment and take full advantage of heatstroke indoors.

Weather today, Saturday the 23rd: Rain until morning in Hokkaido; Beware of heat and changes in weather in Eastern Japan to Western Japan

2025/08/23 06:13

Today, the 23rd (Saturday), low pressure and fronts are expected to pass through the area around Hokkaido. Additionally, tropical cyclones will weaken off the coast of Shikoku and move slowly eastward.



In Hokkaido, there will be some areas where rain will be until the morning due to low pressure and front lines. Heavy localized rain with lightning can cause heavy rain, so strict vigilance is required for landslides, flooding of rivers and flooding. There are many places to stop in the afternoon, and there are likely places to return to the sun.


There are likely some areas in the north of Tohoku that will rain mainly on the Sea of Japan side in the afternoon. It's a good idea to have a folding umbrella when going out.


It is sunny and the heat continues in southern Tohoku to eastern Japan. In some places, especially inland areas, the heat is dangerous, so heat stroke prevention is essential.
In the afternoon, you should be careful of sudden thunderstorms, mainly along the mountains.


In western Japan, clouds dominate the sky as moist air around tropical cyclones flows into the air. It is easy to rain on the Pacific side, and there are some areas where thunderstorms are locally required, so please bring rain gear when you go out.
You should be careful of sudden changes in the weather in the afternoon on the Sea of Japan side.

New typhoon: Typhoon No. 13 to emerge; typhoon eggs east of the Philippines [Tropical cyclone information]

2025/08/22 11:53

As of 9am today, the 22nd (Friday), the Japan Meteorological Agency has announced that it is expected to develop into a typhoon within 24 hours regarding the tropical cyclone developing in the east of the Philippines.
As expected, if it develops into a typhoon, it will be called "Typhoon No. 13."



#Tropical cyclone: Friday, August 22nd, 9am
Area of existence: East
Center location: 16 00 N latitude, 122 30 minutes ET
Travel: 15 km/h
Center pressure: 1006 hPa
Maximum wind speed: 15 m/s (near the center)
Maximum instantaneous wind speed: 23 m/s

In the future, the tropical cyclone in the east of the Philippines will move westward, pass through Luzon, Philippines, and reach the South China Sea by night.
Tomorrow, Saturday the 23rd, at 9am, a typhoon will develop in the South China Sea, and will move westward through the South China Sea through Monday the 25th.
It will land in Vietnam at 9am on the 26th (Tuesday), and it will then lose its influence and will turn into a tropical cyclone in Laos at 9am on the 27th (Wednesday).


We do not expect a direct impact on Japan, but if you are planning to travel to the Philippines or Vietnam, please be careful of the latest information.

Weather today, the 22nd (Friday) - Warning against heavy rain disasters in southern Kyushu; in Kinki and Tokai, the dangerous heat approaching body temperature is likely to occur.

2025/08/22 07:24

The area around Honshu will be covered by midsummer high pressure, and from Kanto to west, the strong sunlight will cause extreme heat in various places. In southern Kyushu, beware of heavy rain disasters caused by heavy rain.


In southern Kyushu, active rain clouds from Typhoon No. 12 are engaging in the area.



Typhoon No. 12 is moving east at a slow speed, and as of 6am it is moving over the sea near Hyuga City. Heavy rain warnings, flood warnings and landslide warning information have been issued, mainly in the Satsuma Peninsula in Kagoshima Prefecture, and there is a risk that a linear precipitation zone will occur today, leading to the afternoon of the day, and the risk of heavy rain disasters will increase dramatically. There have been some areas where the ground has been loosened due to heavy rain so please be careful not to suffer heavy rain disasters.
Typhoon No. 12 is expected to turn into a tropical cyclone near the Hyuga Nada Sea today, midday afternoon. Even after the typhoon transforms into a tropical cyclone, the warm, humid air flows will continue, and the rain will extend to northern Kyushu and Shikoku. There are likely to be heavy localized rains with lightning.


There are many places in the high pressure zone between China and Kanto, and there are probably sunny spots within the high pressure zone. During the day, many places will have extremely hot days of 35 C or higher, and the expected maximum temperature is expected to be 38 C in Nagoya, Gifu, Kyoto, and other places. Beware of heat stroke as it may cause dangerous heat to exceed your body temperature.
In the afternoon, the air condition will become unstable due to humid air and rising daytime temperatures, and thunderstorms are expected, mainly along the mountains. Be careful of severe gusts of wind, such as lightning strikes and tornadoes.



There is a cyclone with a front near Northeast China, and the front extending from the cyclone will approach northern Japan up tonight. Although it is sunny during the day in Tohoku, clouds are expected to gradually increase from the evening, mainly on the Sea of Japan side. The weather is downhill in Hokkaido, and rain will begin to fall mainly in the Sea of Japan side from tonight. The rain will be heavily accompanied by thunder the next morning, and there is a risk of heavy rain. Be careful of landslides and road flooding.