Tohoku region: Atmospheric conditions are unstable; watch out for landslides into tomorrow evening

2025/11/25 07:35

There is a low pressure system in the western part of the Sea of Japan, and it is moving eastward. This low pressure system is accompanied by cold air in the upper atmosphere, and will continue to develop as it moves eastward across the Sea of Japan today, the 25th.
The low pressure system will move towards the Tohoku region and become unclear until tomorrow, the 26th (Wednesday), but cold air with temperatures below -27c is expected to flow into the Tohoku region at an altitude of around 5,500m.
Atmospheric conditions will be extremely unstable in the Tohoku region due to the effects of warm, humid air flowing toward the low pressure system and cold air in the upper atmosphere.

As a result, cumulonimbus clouds are expected to develop in the Tohoku region, causing thunderstorms in some places. In the northern part of Tohoku on the Sea of Japan side, there are places where the ground has become loose due to previous rains, increasing the risk of landslides even with light rain, and there is a possibility of warning-level heavy rain.

Please be careful of landslides caused by heavy rain from the afternoon of today, the 25th, to the evening of tomorrow, the 26th (Wednesday).
In addition, in the Tohoku region, it is necessary to be careful of severe gusts such as tornadoes, lightning strikes, damage to crops and agricultural facilities due to hail, and sudden heavy rain until the evening of tomorrow, the 26th.



#Forecasted amount of rain (in areas where there is a lot of it)
+1-hour precipitation expected from today 25th to tomorrow 26th (Wednesday)
Tohoku Sea of Japan side northern part 20mm
+24-hour precipitation expected by tomorrow 26th (Wednesday) dawn
Tohoku Japan Sea side northern part 60mm

The weather for today, the 25th (Tuesday): Bring rain gear and watch out for thunderstorms, especially on the Sea of ??Japan side.

2025/11/25 06:11

Today, the 25th (Tuesday), after the holidays, low pressure is expected to move through the Sea of Japan and the Pacific Ocean. Rain gear will be widely used, especially in western and eastern Japan. At this time of year, strong cold air flows in, so you need to be careful of thunderstorms, especially on the Sea of Japan side.



Although there are many places in Hokkaido that are sunny in the morning, the sky tends to become cloudy in the afternoon. On the Sea of Japan side, there are places where it starts to rain after the evening, so please prepare rain gear in time for your return.

The weather is downhill in Tohoku and Hokuriku. As a low-pressure system approaches, rain will begin in the evening, with heavy rain expected at night. Please bring a large umbrella when going out.

The Kanto and Tokai regions are likely to experience rainy weather around noon. The temperature will not rise, and daytime temperatures are likely to be similar to early to mid-December. Please be sure to protect yourself from the cold.

Western Japan has many places with rain since the morning, and there is a risk that the rain will locally become stronger and lead to thunderstorms. Be wary of lightning, tornadoes, strong wind gusts, hail, and sudden heavy rain. In addition, yellow dust is expected to fly from western Japan to the Nansei Islands, so please pay attention to traffic information.

From the 25th to the 26th, yellow dust is expected over a wide area from western Japan to the Nansei Islands!

2025/11/24 12:33

### Weather Overview
Yellow sand has been observed in mainland China.
On the 25th, the atmospheric pressure is expected to be high in the west and low in the east, and the northwest monsoon wind is expected to strengthen from western Japan to the Nansei Islands.
Riding this northwest wind,
yellow sand is expected over a wide area from western Japan to the Nansei Islands from around dawn on the 25th to around dawn on the 26th.
Visibility will be less than 10 kilometers, and in some places visibility may be less than 5 kilometers.





###Disaster prevention matters
Outdoors is expected to be affected by yellow sand in some places.
Also, please be aware that if the visibility is less than 5 kilometers, there is a risk of traffic disruption.


* Additional information
Visibility is the distance that can be seen in the horizontal direction.

Today, the 24th (Monday), it is cloudy and rainy on the Sea of ??Japan side. Tomorrow, the 25th (Tuesday), it will rain nationwide and the atmosphere will be unstable.

2025/11/24 06:58

There is a high pressure system over the sea east of Japan and the sea south of Shikoku that is moving eastward.
On the other hand, there is a low pressure system near the Korean Peninsula, which is moving east-southeast.




Today, under the influence of a pressure trough and humid air, clouds are expected to spread from northern Japan to western Japan on the
Sea of Japan side, with some showers expected, and thunderstorms in some places in Tohoku and Hokuriku.
Also, on the Pacific side, it will be sunny at first, but clouds are expected to gradually spread in the afternoon.



Tomorrow, the 25th (Tuesday), a low pressure system will develop near the Korean Peninsula and move east across the Sea of Japan. In addition, another low-pressure system is expected to form on the Pacific side of western Japan and develop into the night, accompanied by the
front, as it moves from the Pacific side of eastern Japan to the coast of Sanriku.
Furthermore, cold air, which is strong for this time of year, is expected to flow from the 25th to the 26th from northern Japan to western Japan.



Atmospheric conditions are expected to become extremely unstable in some places from the 25th to the 26th tomorrow, mainly from the Sea of Japan side of northern Japan to western Japan, due to the influence of warm, humid air heading toward low pressure and pressure troughs, and cold air in the upper atmosphere.

Please be careful of lightning strikes, tornadoes, strong gusts of wind, sudden heavy rain, hail, etc.

Tomorrow, the 24th (Sunday), the last day of the holidays, the weather will be downhill. On the 25th (Tuesday), the weather will deteriorate across the country.

2025/11/23 18:37

There is a high pressure system over the East Sea of Japan and the East China Sea that is moving eastward.
On the other hand, there is a low pressure system in northeastern China, and a trough of pressure near the Korean Peninsula.
Also, there is a trough of weak atmospheric pressure near the Kanto region.

Today, the second day of the three-day holiday, there were many clouds and rain in some areas from Kanto, western Hokkaido to northern Tohoku, but many other areas were sunny and perfect for sightseeing.





Tomorrow, the 24th (Monday), it will be sunny in many places on the Pacific coast from southern Tohoku to Okinawa during the day.
However, a pressure trough approaches from the west, and the weather is going downhill.
On the Sea of Japan side from Hokkaido to Kyushu, clouds will spread more easily and there will be some rain.

The highest temperature can reach around 20 degrees Celsius in some places in western and eastern Japan, and it is sunny from late October to early November.The daytime is comfortable, but there are many places where the temperature difference between morning and evening is large, so please wear clothes that can be adjusted.



On the 25th (Tuesday) after the holidays, a low pressure system is expected to move eastward through the Sea of Japan and the southern coast of Honshu, developing over the Sea of Japan and the southern coast of Honshu.
The weather is expected to deteriorate across a wide area of the country, with heavy rain accompanied by localized thunderstorms expected in areas near low-pressure systems.
Also, please be careful as the wind can be strong in some places.

Weather for the week: Widespread rain after the holidays - Beware of rough weather in northern Japan

2025/11/23 07:54

From the 25th (Tuesday) onwards, after the three-day holiday, low pressure and high pressure will alternate around Honshu, and the weather will change in short cycles. In northern Japan, there are likely to be days when the weather is stormy.



Tomorrow, the 24th (Monday), the last day of the three-day holiday, will be covered by high pressure mainly from the Pacific side of western to eastern Japan, and sunlight will reach the area. However, from Tohoku to northern Kyushu on the Sea of Japan side, clouds tend to spread due to the effect of a trough in the atmospheric pressure, and there are likely to be some areas with showers.



On the 25th (Tuesday), the end of the holidays, a low pressure system is expected to develop as it moves through the Sea of Japan. In addition, another low pressure system will form near the southern coast of Honshu and will continue to develop. As a result, it will rain over a wide area around Honshu on the 25th (Tuesday).
The two low pressure systems will merge into one over the sea east of Japan on the 26th (Wednesday), and the pressure around Honshu will be high in the west and low in the east. Northerly winds will become stronger in Hokuriku, on the Sea of Japan side of northern Japan, and northern Japan is likely to experience rough weather. In Hokkaido, there will be places where it snows, mainly in northern Hokkaido. On the other hand, in western Japan, where high pressure is overhanging, many areas are expected to be sunny.

A low pressure system will pass near the Sea of Japan from the 27th to the 28th. On the 27th (Thursday), there will be fewer places where it will rain, but on the 28th (Friday), the weather will deteriorate, mainly on the Sea of Japan side, and it will likely rain in many places.

From now on, daytime temperatures are expected to remain at or slightly higher than normal in many places, and the cold weather will ease for a while. However, the temperature difference between morning and afternoon tends to be large, so please take care of your health.

The middle days of the three-day weekend will be covered in high pressure and will be widely sunny, with rain likely in the northern Tohoku and Kanto coasts.

2025/11/23 06:46

Today, the 23rd (Sunday), the middle day of the three-day holiday, the area around Honshu will be covered by a band of high pressure. However, near the northern Tohoku region, the coastal areas of the Kanto region, and the Izu Islands, rain clouds will form due to the trough in the atmospheric pressure.



Akita Prefecture in the northern part of Tohoku will experience rain on and off due to the influence of a local front associated with a trough in atmospheric pressure. Localized thunderstorms are expected, so please be careful of lightning strikes. There are also likely to be some areas of showers in Aomori Prefecture and near the Oshima Peninsula in Hokkaido due to the influence of rain clouds associated with a trough in atmospheric pressure. When going out, it is better to carry a folding umbrella.

In the Kanto region, clouds will likely spread in the southern part of the country, and rain will start and stop in the coastal areas of Chiba and Ibaraki prefectures and the Izu Islands. There is also a possibility of showers in the morning in Tokyo and Yokohama. Sunny skies are expected to gradually return in the afternoon, but the maximum temperature during the day will likely be lower than yesterday. The expected maximum temperature in Tokyo is 13c, which is about 4c lower than yesterday. Please wear warm clothes when going out.

Other areas will be mostly sunny and there will be no major weather changes. In the inland areas of western Japan, there are likely to be places where thick fog will form in the morning. During the day, the temperature will rise to around 20c, making it a pleasant day. However, the air will be dry, so please be careful when handling sources of fire.

Tomorrow, the 23rd (Sunday), will be a sunny day for tourists, but from the 24th (Monday) onwards, the weather will be downhill.

2025/11/22 18:40

There is a developed low pressure system on the Kamchatka Peninsula, which is moving northeast.
On the other hand, there is a high pressure system moving eastward in the East China Sea, and it is spreading toward western and eastern Japan.

Today, there were initially a lot of clouds on the Sea of Japan coast from Hokkaido to the Hokuriku region, and there were some places where it snowed and rained, but the rain and snow gradually stopped and it was sunny across western and eastern Japan.



Tomorrow, high pressure will spread, and it will be sunny in many places nationwide, making it a good day for sightseeing.
There are many places where the temperature difference between daytime and morning and evening is large. Please wear clothes that can be adjusted.
Also, as there are many places where the air is dry, please be careful when handling fire.

Atmospheric conditions are expected to be unstable in parts of the northern Tohoku region and the Pacific coast of the Kanto region, and there may be some localized rain, so it's a good idea to bring a foldable umbrella.





On the last day of the three-day holiday, the 24th (Monday), a low pressure system and a trough of pressure will approach the Sea of Japan.
As a result, the weather will slowly go downhill, and clouds will spread over the Tohoku region and the Japan Sea side of eastern and western Japan. It looks like it will rain in some places.

After the holidays, on the 25th (Tuesday), a trough of atmospheric pressure will pass through the Japanese archipelago, and the weather is expected to deteriorate in many places across the country.

Temperatures are typical for this time of year in various places today, so be careful of the temperature changes throughout the day.

2025/11/22 08:03

Radiation cooling of Kesa is increasing, and the cooling is getting stronger mainly in western Japan. The lowest temperatures by 7 o'clock were -0.5 C in Sapporo, 3.9 C in Sendai, 7.4 C in Tokyo, 9.1 C in Kanazawa, 8.1 C in Nagoya, 8.6 C in Osaka, 8.8 C in Kochi, and 7.8 C in Fukuoka, and 142 locations have recorded the lowest temperatures this season.



Today, many places will be covered in high pressure, so it will be sunny in many places during the day, making it a good day for going out.

The maximum temperature during the day is expected to be 6c in Sapporo, 13c in Sendai, 17c in Tokyo, 16c in Kanazawa, 18c in Nagoya, 17c in Osaka, 19c in Kochi, and 18c in Fukuoka.

During the daytime, the temperature in many places is the same as the day before, and you can feel the warmth of the sunlight, but the temperature difference between morning and evening is large. If you are planning to go out such as viewing autumn leaves, please be careful when choosing your clothes.

The weather for today, the 22nd (Saturday): The first day of the three-day weekend is a perfect day for vacationers in many places. On the Sea of ??Japan side, it will be raining and snowing until morning.

2025/11/22 06:30

Today, the 22nd (Saturday), the first day of the three-day holiday, a high-pressure system will protrude from the west, and the area around Japan will gradually become covered in high-pressure systems. The weather on the Sea of Japan side is gradually improving, and it looks like it will be a good day for tourists in many places.



There will be rain and snow in places on the Sea of Japan side of northern Japan and Hokuriku until morning. The weather will improve in the afternoon, and the sun will return in some places in the afternoon. It looks like the Pacific side will be sunny and the blue sky will spread out.
During the day, many places will be lower than the previous day, and the temperature will be typical of this time of year.

From the Kanto region to western Japan, the weather will be mild and sunny, making it a perfect day for tourists. It looks like it would be a good idea to go viewing the autumn leaves. You can feel the warmth of the sunlight during the day, but it can get cold in the mornings and evenings, so be careful when choosing what to wear.

There are times when clouds spread out in Okinawa, but there are many places where it will be sunny.