Be careful of heavy snow in Hokkaido, wind, snow and high waves in Tohoku, and strong winds and high waves in Kanto!

2026/03/04 17:31

To the east of the Boso Peninsula, there is a low pressure system with a front that is moving east-northeast.
There is also a low pressure system off the coast of Akita that is moving northeast.
The low pressure system east of the Boso Peninsula is rapidly developing and moving northeast, and will move off the coast of Sanriku tomorrow morning.



Currently, snow is falling widely in Hokkaido, and a heavy snow warning has been announced in the Tokachi region.
Also, it is snowing and raining in places in Tohoku, and raining and snowing from Hokuriku to the Chugoku region on the Sea of Japan side.



The area around Hokkaido will be in a pressure trough from the 4th to the 5th, including a low pressure system in the Sea of Japan and a low pressure system rapidly developing east of Japan and moving northeast.
In the Tokachi region, please be on guard for traffic disruptions due to heavy snow late into the evening of the 4th.

On the Pacific side of the Tohoku region, strong winds will blow from the north, accompanied by snow, and the sea will continue to be rough due to swells.
Depending on the degree of development and course of the low pressure system, there is a possibility of blizzard and warning level high waves from the north.
Please be careful of wind and snow through the evening of the 5th and high waves through the 6th.

In the Kanto region, strong winds will blow mainly on the sea towards the beginning of the night of the 5th, and there will be some places where there will be heavy swells into the 6th.
In the Kanto region, please be aware of strong winds mainly at sea through the early evening of the 5th, and high waves with swells through the 6th.



#Snow report
24-hour snowfall as of 15:00 on the 4th (preliminary report by AMeDAS)
Hokkaido Nakasatsunai Village Kamisatsunai 42 cm
Hokkaido Taiki 42 cm
Hokkaido Hiroo 41 cm

#Snow forecast
The 24-hour snowfall expected from 18:00 on the 4th to 18:00 on the 5th will be heavy in some places
Western Hokkaido Pacific side 40cm
Eastern Hokkaido Pacific side 40cm

#Wind forecast
Maximum wind speed (maximum instantaneous wind speed) expected from the 4th to the 5th
Tohoku Pacific side sea 18 meters (30 meters)
Tohoku Pacific side land 15 meters (30 meters)
Kanto region sea 18 meters (30 meters)
Kanto region land 17 meters (30 meters)

Maximum wind speed expected on the 5th (maximum instantaneous wind speed)
Kanto region sea 15 meters (25 meters)
Kanto region land 15 meters (30 meters)

#Wave forecast
Wave height expected from the 4th to 6th
Tohoku Pacific side 5m with swell
Kanto 5m with swell

Wave height expected on the 5th
Kanto 4m with swell

Wave height expected from the 6th
Kanto 4m With swells

#Disaster prevention matters
In Hokkaido, there are already heavy snowfalls on the Pacific side.
In southern Tokachi, please be on guard for traffic disruptions due to heavy snow late into the evening of the 4th.
On the Pacific side, please be careful of traffic disruptions due to heavy snow, avalanches, and snow deposits on power lines due to wet snow into the early hours of the 5th.
Depending on the trend of the low-pressure system, snow clouds may continue to flow into the same area, potentially expanding the area with warning-level heavy snow.

On the Pacific side of Tohoku, please be careful of traffic disruptions and damage to buildings due to strong winds from the north accompanied by snow into the evening of the 5th.
Also, please be aware of damage to ships and coastal facilities due to high waves through the 6th.

In the Kanto region, please be aware of strong winds mainly at sea from early on the evening of the 5th, and high waves with swells into the 6th.

Caution/warning for strong winds and localized heavy snow through tomorrow 5th (Thursday) [Weekly weather]

2026/03/04 14:34

From now until tomorrow the 5th (Thursday), we need to be careful about strong winds and locally increasing snowfall.



Now, let's take a look at the state of rain, snow and clouds around this time.
The active rain clouds associated with the low pressure system are gradually moving eastward. However, snow clouds and rain clouds are starting to form over Hokkaido due to another low pressure system.



This is the forecasted weather map for tonight.
A low pressure system is expected to rapidly develop off the coast of Sanriku.
Also, another low-pressure system is expected to approach Hokkaido, and the northern evening winds are likely to become stronger mainly in eastern and northern Japan near these two low-pressure systems.
There are likely to be warning-level storms in some places, and the snow is likely to increase locally.

Let's take a look at the snow and rain forecast.
After this, snow is expected to gradually fall over a wide area, mainly in eastern Hokkaido, from the evening onwards.
In areas such as the Tokachi region, there are local purple signs, indicating that there may be snow in some places.


The amount of snow expected by the morning of tomorrow 5th (Thursday) is expected to be up to 60 centimeters in Hokkaido and 40 centimeters in Tohoku.
In Tohoku, there will be heavy snow mainly along the mountains, and in Hokkaido, there will be heavy snow in localized areas, mainly in the Tokachi region.
Then, around noon on the 5th (Thursday),
the snow and rain are likely to stop in many places, but the strong winds are likely to continue into the 5th (Thursday).



, we will take a look at the detailed weather of each place.
Today, the 4th (Wednesday), there is a need to be wary of strong winds mainly in eastern and northern Japan. The Pacific side of western and eastern Japan will be sunny, but the Sea of Japan side is expected to experience cold rain and snow. In Hokkaido, the snow is accumulating locally, and there is a risk that the wet snow may land on power lines.
Please be careful of power outages.



Weekly forecast.
Tomorrow, the 5th (Thursday), the snow in Hokkaido is expected to clear up from last week, mainly on the Pacific side.
As the strong winds continue, cedar pollen is likely to be scattered quite a lot.
Please take precautions against hay fever.

On the 6th (Friday), the rain will spread from the west.
It is likely to rain and snow over a wide area on the 7th (Saturday).
It looks like it will be sunny in many places after the 8th (Sunday).
It will continue to snow in Hokkaido.

Heavy snow is likely on the Pacific side of northern Japan. Be careful of traffic disruptions due to heavy snow.

2026/03/04 07:00

A low pressure system is located near the Izu Islands and is moving east-northeast.
This low pressure system is expected to rapidly develop and move east of Japan into tomorrow, the 5th (Thursday).
For this reason, on the Pacific side of northern Japan, wet snow will fall intermittently, resulting in heavy snowfall in some places.
Also, strong winds are expected to blow from the north, accompanied by snow, mainly on the Pacific side of Tohoku, and the sea is expected to continue to be rough due to swells.
If the temperature is lower than expected, there is a possibility of heavy snowfall of warning level, and depending on the degree of development and course of the low pressure system, there is a possibility of blizzard from the north and high waves of warning level.




#Expected amount of snow (in areas with the most)
+24-hour snowfall expected by dawn on the 5th (Thursday) tomorrow
Western Hokkaido Pacific side 60cm
Eastern Hokkaido Pacific side 60cm
Tohoku Pacific side mountainside 40cm
Tohoku Pacific side, flat land 30cm

#Expected wind forecast
+Maximum wind speed (maximum instantaneous wind speed) expected through tomorrow 5th (Thursday)
Tohoku Pacific side, sea 18 meters (30 meters)
Tohoku Pacific side land 15 meters (30 meters)

# Expected wave height
+Expected wave height from today 4th to tomorrow 6th (Friday)
Tohoku Pacific side 5 meters with swells

# Prevention Disaster
In Hokkaido, the snow will become heavier in some places, mainly in the Tokachi region and eastern Hidaka, from noon today on the 4th until dawn on the 5th (Thursday), and in the northern part of Tohoku on the Pacific Ocean side, from the night of the 4th today to the morning of the 5th (Thursday), there will be heavy snowfall.
Be careful of traffic obstructions caused by heavy snow, falling snow from roofs, and damage to buildings and agricultural facilities, and be careful of wet snow accreting on power lines and trees, as well as avalanches. In addition, on the Pacific side of Tohoku, please be on guard against traffic disruptions and damage to buildings due to strong winds from the north, accompanied by snow, through the evening of the 5th (Thursday) tomorrow, and damage to ships and coastal facilities due to high waves through the 6th (Friday).

Be careful of snowfall in the Kanto region from today 3rd to tomorrow 4th, and be careful of heavy snow on the Pacific side of northern Japan.

2026/03/03 13:53

Today, the 3rd (Tuesday), is the Doll's Festival, and due to the influence of a low pressure system moving east-northeast along the southern coast of Honshu, rain and snow are falling over a wide area.
After this, there will be snow in many places from Kanto-Koshin to Hokkaido.
In the Kanto region, snow is expected to fall mainly along the mountains and in mountainous areas from the afternoon of today, the 3rd (Tuesday) until noon on the 4th (Wednesday) tomorrow. If the surface temperature is lower than expected, there is a possibility of snowfall in the 23 wards.
In addition, through tomorrow, the 4th (Wednesday), the rain and snow will spread to northern Japan, and there is a risk of heavy snow on the Pacific side of Tohoku and Hokkaido.



Currently, there is a low pressure system with a front off the coast of Shikoku, and it is moving east-northeast. It is raining and snowing widely in China, from Shikoku to the southern part of Tohoku.

After this, temperatures in the Kanto-Koshin region are expected to drop and snow will turn to snow in many places. From the afternoon of today, the 3rd (Tuesday) to the early afternoon of tomorrow, the 4th (Wednesday), heavy snow will fall mainly along the mountains and in the mountains, and there will be snowfall in some places in the flatlands of the southern Kanto region.

The total amount of snowfall for the two-day period from 6 a.m. on the 3rd to 6 a.m. on the 5th is expected to be 50 cm in the mountains of northern Kanto, 15 cm along the mountains in the south, 13 cm in the plains of the north, and 1 cm in the plains of Saitama and western Kanagawa prefectures.
Be careful of traffic obstructions caused by snow accumulation and frozen roads, and be careful of snow accumulation and avalanches.

The maximum temperature in Tokyo today, the 3rd (Tuesday), is expected to be 8c, 6c lower than yesterday. Please take proper measures against the cold.
Also, the wind is strong and it is likely to rain or snow, so please be careful when going out.



On the 4th (Wednesday), a low pressure system is expected to rapidly develop and move northeastward east of Japan.

On the Pacific side of Tohoku, there will be heavy snow in some places, even in flat areas, from late on the night of the 3rd (Tuesday) until the 5th (Thursday). In addition, strong winds will blow from the north, bringing snow and swells at sea. If temperatures are lower than expected, there is a possibility of heavy snowfall. Depending on the degree of development and course of the low pressure system, there is a possibility of strong winds blowing from the north or warning-level high waves.
The total snowfall for the two days from 6:00 am on the 3rd to 6:00 am on the 5th is expected to be 90 cm along the mountains on the Pacific coast of Tohoku, and 70 cm on the flatlands.

On the Pacific side of Hokkaido, the snow will become heavier from noon on the 4th (Wednesday) to the 5th (Thursday), and there will be heavy snowfall in some places, especially in the Tokachi region and eastern Hidaka. Depending on the trend of the low pressure system, snow clouds may continue to flow into the same area, leading to warning-level heavy snow.
The total amount of snowfall for the two days from 12:00 on the 3rd to 12:00 on the 5th is expected to be 90cm in the western Pacific side and 80cm in the eastern Pacific side.

Please be careful of traffic obstructions caused by heavy snow, avalanches and falling snow from roofs, and snow buildup on power lines due to wet snow.

Weekly weather: After the weather improves, be careful of cedar pollen scattering; weather is expected to deteriorate nationwide on the weekend

2026/03/02 13:09

From this weekend (Saturday) onwards, there is a possibility that the weather will deteriorate again across the country.



Tomorrow, the 3rd (Tuesday) and 4th (Wednesday), due to the influence of a low pressure system on the south coast, northern and eastern Japan will experience cold rain and snow, and there will be localized areas of heavy snow along the mountains and inland. There is a possibility of snow accumulating in some areas even on the plains, so please be careful of deteriorating road conditions. From the 3rd (Tuesday) to the 4th (Wednesday), northern and eastern Japan will experience a temporary return to cold weather, with daytime temperatures not rising much and making it feel colder. Meanwhile, the weather in western Japan is expected to improve on the 4th (Wednesday) and bring spring warmth.

On the 5th (Thursday), it will likely snow in some places in Hokkaido, but the weather is expected to improve from Tohoku to Kanto-Koshin and Hokuriku. However, after the weather improves, the amount of cedar pollen scattered tends to increase. There are some places where cedar pollen has already reached its peak, so those who are sensitive should take precautions.

Around Friday the 6th, a new front and low pressure system will approach from the west, and the weather is expected to deteriorate again from the west. The low pressure system will then continue to develop as it moves through the Sea of Japan, and is expected to pass through northern Japan around Monday the 9th of next week. On Saturday the 7th, it will rain across the country, and there will be some places in northern Japan where it will snow. Especially in Hokkaido, there is a possibility that the effects of the low pressure system will continue to bring snow and strong winds, resulting in rough weather, so please pay close attention to the latest weather information that will be updated in the future.

Weekly weather: After the weather improves, be careful of cedar pollen scattering; weather is expected to deteriorate nationwide on the weekend

2026/03/02 08:18

There is a possibility that the weather will deteriorate again across the country from the weekend (Saturday) onwards.



Tomorrow, on the 3rd and 4th, due to the influence of a low pressure system on the south coast, northern and eastern Japan will experience cold rain and snow, and there will be localized areas of heavy snow along the mountains and inland. There is a possibility of snow accumulating in some areas even on the plains, so please be careful of deteriorating road conditions. From the 3rd to the 4th, there will be a temporary return of cold weather from northern Japan to eastern Japan, and daytime temperatures will not rise much, making it feel colder. On the other hand, the weather in western Japan is expected to improve on the 4th and bring spring warmth.

On the 5th, it looks like there will be snow in some places in Hokkaido, but the weather is expected to improve from Tohoku to Kanto-Koshin and Hokuriku. However, after the weather improves, the amount of cedar pollen scattered tends to increase. There are some places where cedar pollen has already reached its peak, so those who are sensitive should take precautions.

Around Friday the 6th, a new front and low pressure system will approach from the west, and the weather is expected to deteriorate again from the west. The low pressure system will then continue to develop as it moves through the Sea of Japan, and is expected to pass through northern Japan around Monday the 9th of next week. On Saturday the 7th, it will rain across the country, and there will be some places in northern Japan where it will snow. Especially in Hokkaido, there is a possibility that the effects of the low pressure system will continue to bring snow and strong winds, resulting in rough weather, so please pay close attention to the latest weather information that will be updated in the future.

Today, the 2nd (Monday), the weather is going downhill from the west. Tomorrow, the 3rd (Tuesday), there will be cold rain and snow in northern and eastern Japan, with the possibility of snow in the plains.

2026/03/02 07:34

Today, the 2nd (Monday), a low pressure system and front are approaching from the East China Sea. Developed rain clouds associated with low pressure and fronts are approaching from the west, and it is already raining in some places in Kyushu and the Nansei Islands.



The low pressure system accompanied by the front is expected to move along the southern coast of Honshu, and the rain will gradually spread over western Japan. In southern Kyushu and Okinawa, please be careful of heavy rain accompanied by thunder from noon to evening. In Chugoku, Shikoku, and Kinki, the weather will gradually change to rain from the afternoon. It is likely that there will be places in the Tokai and Kanto regions where it will start raining late at night.



Tomorrow, the 3rd, the low pressure system will continue to move along the southern coast of Honshu. From early morning until noon on the Pacific side of western Japan, be careful of heavy rain accompanied by thunder in Shikoku and the Kii Peninsula. From Kanto-Koshin to the southern part of Tohoku, there will be freezing rain and snow, and there are likely to be some places along the mountains and inland where the snow will be heavier. Because the low-pressure system is moving eastward relatively slowly, cold rain and snow are expected to continue for a long period of time from northern to eastern Japan into the 4th (Wednesday).



In particular, in northern and eastern Japan, snowfall will be heavier in localized areas, especially inland and along mountains. The snow is expected to spread to the plains, and if the snow continues to fall, there is a risk that snow will accumulate even in the plains of the Kanto region. From the 3rd tomorrow to the 4th, please be careful of deteriorating road conditions and snow accumulation.

Weekly Weather Will you be able to see the total lunar eclipse on the 3rd (Tuesday)

2026/03/01 12:38

Today, the 1st (Sunday), a low pressure system is moving northward east of Hokkaido, and a high pressure system is protruding from the continent. In northern Japan, there is a large gradient in atmospheric pressure and winds are increasing. Also, in some parts of Hokkaido, it is snowing.
The area around Honshu is covered by an anticyclone that extends from the continent, and there are many places where it is sunny. In the Okinawa region, there will be some places where it will rain due to the humid air.

Tomorrow, the 2nd (Monday), a low pressure front will form near the East China Sea and move eastward, so the weather will deteriorate from the west. Rain is expected to start falling around noon in Kyushu and gradually spread over the area. It will start raining in China and Shikoku at night.
Eastern and northern Japan will have many sunny days, but the Kanto region will be affected by humid air and will have many clouds, and there will be some areas where it may rain. There will be places on the Sea of Okhotsk side of Hokkaido where it will snow.



On the 3rd (Tuesday), a low pressure system will move eastward along the southern coast of Honshu, and the area of rain will spread from Kinki to southern Tohoku. Clouds are likely to prevail from northern Tohoku to Hokkaido as well.

On the 4th (Wednesday), the weather will improve in western Japan, and there will be some lingering rain in the Tokai and Tohoku regions. As the low pressure passes, the temperature will drop and the winter cold will likely return, so please take care of your health.

On the 5th (Thursday), many places near Japan will be covered in high pressure and it will be sunny.
From the 6th (Friday), the low pressure system will move toward the Sea of Japan and pass near northern Japan until the 8th (Sunday), so the weather is likely to go downhill again from the west.



Now, regarding the time of the total lunar eclipse on the 3rd (Tuesday), clouds are likely to spread over a wide area due to the influence of a low pressure system moving eastward.
Unfortunately, there is a possibility of rain in China, Kinki and southern Tohoku. On the other hand, we can expect periods of sunshine in Okinawa to Kyushu and parts of northern Japan, which are behind the low pressure system.



This total lunar eclipse will be observed at a time when it is easy to observe.It will begin to eclipse in the eastern sky at 18:50, become a total eclipse from 20:04 to 21:03, and then the eclipsed portion will gradually become smaller, until the partial eclipse ends in the southeastern sky at 22:18.
The total eclipse of the moon appears reddish-black, a color known as ``red copper.''
The total lunar eclipse lasts about an hour, so it might be a good idea to aim for a gap in the clouds for a chance.
Forecasts are still subject to change, so check back for the latest information.

Today is a pleasant and sunny day in eastern and western Japan.Hinamatsuri will be as cold as January in the Kanto region.

2026/03/01 07:02

Today, the first day of the month, cold air will flow mainly into northern Japan, so there will be many places in northern Japan where the temperature will be lower than the day before, and many places will experience temperatures typical of this time of year. The air seems to feel cool even during the day.

Although there are some places in eastern and western Japan where the temperature will drop from the previous day, there will be places in western Japan where the temperature will be the same as yesterday or even higher. In many places, the temperature during the day exceeds 15 degrees Celsius, so you won't need a jacket during the day to enjoy the cheerful weather.
Since the temperature difference between morning and evening and during the day is large, it would be a good idea to choose clothes that are easy to adjust.

The predicted maximum temperature is Sapporo 1c, Sendai 11c, Tokyo 18c, Nagoya 19c, Kanazawa 12c, Osaka 17c, Kochi 18c, and Fukuoka 17c.



Next week, low pressure and high pressure will alternately pass near Japan, and the weather is expected to change periodically. It's going to be a week where we need to be careful about changes in temperature, as there will be times when cold air will temporarily move south.
In central Tokyo, a low pressure system will pass through the Doll's Festival on the 3rd (Tuesday), and rain is expected. The temperature is not expected to rise, and the forecast high temperature is 9 degrees Celsius, which is expected to be as cold as mid-January. There will be a big difference in temperature from the day before, so please be careful not to get sick.

After the 4th, temperatures across the country are likely to settle down to normal. As the snow continues to melt, please be careful of snow melting disasters in areas with heavy snowfall.

Today's weather (Sunday): Widespread clear skies. Be careful of pollen scattering.

2026/03/01 06:23

Today, the 1st (Sunday), the start of March, will be sunny in many places as the area around Japan will be covered in high pressure. You need to be careful about pollen scattering especially in sunny areas.



On the Japan Sea side of northern Japan, clouds will likely spread mainly in the morning. It looks like there will be some sunshine in the afternoon. It looks like it will be sunny and blue skies on the Pacific side.

It will be sunny and sunny from eastern to western Japan. It looks like it's going to be a nice day to spend the day and go out. In sunny areas, pollen is expected to scatter, so if you suffer from hay fever, please take precautions.

The sky in Okinawa is dominated by clouds. There is a possibility of rain showers after the evening, so it is a good idea to bring a foldable umbrella with you when going out.