Kanto region: Winter cold ahead over the weekend... Pacific coastal areas sunny and dry, mountain areas with snow

2024/12/10 07:35

A strong cold front will move south over the weekend, so it will be as cold as winter even in the Kanto region.

The temperature in Tokyo is expected to remain at a maximum of 11 C and a minimum of 3 C, so it will feel cold even under the sunshine.

Please be careful of fire as the air will remain dry.



It is expected that there will be many more days with sunshine in the Kanto region in the future.

However, on Friday the 13th, clouds will spread due to the influence of a low pressure system moving along the southern coast of Honshu, and the coastal areas will be more likely to experience rain.

Around Saturday the 14th, there will be a high pressure system in the west and a low pressure system in the east around Japan, and strong cold air will flow into the sky, so heavy snow is likely to occur in northern Gunma Prefecture.

It will be sunny in southern Kanto, but the north wind will feel cold.

When you go out, it's a good idea to bring a winter coat, as well as accessories such as a scarf and gloves.

Since radiation cooling is more effective in the mornings, it gets colder, so please use the heater to keep warm and get a good night's sleep.

[Cold air returns] Strong cold air will move south again over the weekend, with the possibility of heavy snowfall warnings in the Kanto-Koshin mountainous areas

2024/12/10 06:30

Following last week, strong cold air is expected to move south again this weekend.

Looking at the temperature forecast in the sky, cold air of -36 C or below, which is an indicator of heavy snow on the plains, is expected to move south to Hokuriku at around 5,000m, and cold air of -24 C or below, which is an indicator of snow on the plains if there is precipitation, is expected to move south from the Pacific side of eastern Japan to the Chugoku region.

The strength of the cold air in the sky may change depending on future forecasts, but there is a risk of snow clouds developing on the Sea of Japan side, causing heavy snow, so it is a good idea to prepare for snow over the weekend.




On Saturday the 14th, snow is expected to fall over a wide area from Hokkaido to the Chugoku Mountains.

Even on flat land in Hokuriku, snow will be the main precipitation, not rain.
Rainy weather will continue in Hokuriku for a while, so even if it snows over the weekend, be careful of landslides.

In northern Japan, be careful of heavy snowfall, blizzards, and sudden increases in snowfall.



On Saturday the 14th, an "Early Warning Information" has been issued informing northern Gunma and northern Nagano prefectures that there is a possibility of heavy snowfall that could trigger a warning.

When traveling by car, be careful of snowdrifts and frozen road conditions, as well as poor visibility due to whiteout.

In areas where snowfall is expected, please use winter tires to prevent accidents.

The seasons will progress rapidly from now on. Be sure to take precautions against the cold as winter approaches.

2024/12/09 17:00

For the next week, the winter pressure pattern will continue to get stronger and weaker, and strong cold air for this time of year is expected to move south frequently.

Today, the 9th (Monday), the winter pressure pattern continued in northern to eastern Japan, and many places, mainly on the Pacific coast, experienced winter clear skies.
However, the influence of the strong cold air that moved south over the weekend remained, and the cold winter weather continued nationwide.
As of 2:00 p.m., the daily maximum temperature was lower than average in many places.
In Sapporo, it rose to 2.0 C, but many places, mainly in northern Hokkaido, experienced mid-winter days with maximum temperatures below freezing.
The central Tokyo area was clear and sunny, with a temperature of 13.0 C, typical of this time of year.





Until the day after tomorrow, around the 11th (Wednesday), most parts of the country will have normal weather.
However, the winter pressure pattern will gradually strengthen, and the cold air above will move south. In northern and eastern Japan, it is expected to be cold like mid-winter from around the 12th (Thurs) to the 17th (Tues), in western Japan over the weekend from the 14th (Sat) to the 15th (Sun), and in Okinawa and Amami from the 14th (Sat) to the 17th (Tues), many places will experience mid-winter temperatures from early January.
In Hokkaido and Tohoku, the minimum temperature will be below 0 C in more places, and there will be places where the maximum temperature will be below 0 C in mid-winter.

Some people may be late in preparing for winter in the Kanto region and west due to the high temperatures so far, but the season will progress rapidly, so it is necessary to take thorough measures against the cold.
From now on, the north wind will strengthen even on the clear Pacific side, so please take maximum measures against the cold when going out.



Also, if you are planning to go to see illuminations at night, it would be a good idea to bring a thick coat such as a down jacket, a scarf, and gloves.

[Kanto Weather] Gunma Prefecture, where the first "heavy snow warning" of the season was issued yesterday, is feared to experience another heavy snowfall of warning-level intensity over the weekend

2024/12/09 15:12

Yesterday, the 8th (Sunday), a winter-type atmospheric pressure pattern with high pressure in the west and low pressure in the east strengthened around Japan, and strong cold air flowed into the sky.
The snow clouds that developed on the Sea of Japan side flowed one after another into the mountains of northern Kanto, causing heavy snowfall in northern Kanto as well.
In Gunma Prefecture, heavy snow warnings were issued for the first time this season, and the first snowfall was observed in Maebashi.

In Minakami Town, Gunma Prefecture, the amount of snowfall increased rapidly in one day yesterday, the 8th (Sunday), and the snow depth in Fujiwara was 0 cm at 7:00 a.m., but reached 52 cm at 11:00 p.m.

As of noon today, the 9th (Monday), the peak of the heavy snow in Kanto has passed, and the snow in Fujiwara has stopped, but snow remains, with the snow depth reaching 40 cm.



#Kanto: There is a risk of heavy snowfall that could trigger a warning in the north over the weekend
There will be a period over the next week when the winter pressure pattern will strengthen again, and snow clouds will flow into northern Kanto.
There is a risk of heavy snowfall that could trigger a warning, especially over the weekend.

From Wednesday the 11th to Thursday the 12th, the winter pressure pattern will strengthen, and cold air from above will flow in.
On Thursday the 12th, snow is expected to gradually begin to fall along the mountains in northern Kanto.
On Friday the 13th, the winter pressure pattern will temporarily weaken, and a low-pressure trough will form around Honshu. Clouds are expected to spread widely across Kanto.

The winter pressure pattern will strengthen again over the weekend of the 14th (Sat) to the 15th (Sun), and even stronger cold air will flow in.
There is a risk of heavy snowfall that will warrant an alert in the northern part of Gunma Prefecture.



When traveling to areas where snowfall is expected, please check the latest weather and traffic information.
Be careful and alert for traffic disruptions due to heavy snow and frozen roads, and do not forget to install winter tires and carry chains.

Strong cold air moves south again this weekend, causing heavy snow and blizzards along the Sea of ??Japan coast, and warning-level snowfall in northern Kanto

2024/12/09 12:46

For the next week, the winter pressure pattern will continue to get stronger and weaker, with snow and rain mainly on the Sea of Japan side, and many sunny and dry days on the Pacific side.
From Wednesday the 11th to Thursday the 12th and the weekend from Saturday the 14th to Sunday the 15th, the winter pressure pattern will strengthen, and heavy snow and storms are likely to occur especially on the Sea of Japan side over the weekend, and heavy snowfall of warning level may occur in northern Kanto.

#Wednesday the 11th to Thursday the 12th
The high pressure of the continent will extend strongly around Japan, and the winter pressure pattern will strengthen.
In addition, a cold air mass that is a guideline for snowfall on flat land below -6c at an altitude of around 1500m is expected to move south to the Hokuriku region.
In Hokkaido, snow will fall and stop mainly on the Sea of Japan side and the Sea of Okhotsk side.
Please be careful of increased snowfall and poor visibility due to blizzards.
In Tohoku, wet snow is expected to gradually turn into solid snow, mainly on the Sea of Japan side.
In Hokuriku, the rain will gradually turn to snow, and the amount of snow will increase, especially along the mountains.
In northern Kinki and Sanin, there are expected to be some areas where the rain will mix with snow.



#Even stronger cold air will move south over the weekend. Northern Kanto is also at risk of heavy snowfall of warning level.
Over the weekend, a low pressure system will develop and move northeast in the east of Japan, and the winter pressure pattern will strengthen again.
Even stronger cold air will flow in, and the cold air that is a guideline for snowfall on the plains is expected to move south to western Japan.
From the Sea of Japan side of northern Japan to Hokuriku, snow will come and go, so be careful of a sudden increase in snowfall. The wind will get stronger and the weather will be rough. Transportation is also likely to be affected.
In addition, yesterday, the 8th (Sunday), a heavy snow warning was issued for the first time this season in parts of Gunma Prefecture, and there is a risk of heavy snowfall of warning level in northern Gunma Prefecture and northern Nagano Prefecture next weekend as well.
Please be careful and alert for traffic disruptions due to heavy snow and frozen roads, and check the latest weather and traffic information when traveling to areas where snowfall is expected. Don't forget to put on winter tires and carry chains.
In western Japan, there will be snow in northern Kinki and Sanin, and a mix of rain and snow in northern Kyushu.





#Winter's coldest days
Over the next week, there will be colder than average days in northern Japan.
Eastern and western Japan will be around average, but over the weekend and the start of the week, temperatures will be lower than average, dropping sharply and bringing with them the cold of winter.

The coldest day of the season, first frost and ice reported one after another. It will be even colder this weekend, with temperatures expected to reach 9 C in Tokyo.

2024/12/09 09:02

Today, the 9th (Monday), the Japanese archipelago had a cold morning, with temperatures dropping to 2.5 C in central Tokyo and 2.4 C in Nagoya, the coldest this season. The first frost and ice were observed in central Tokyo and Kagoshima.

#First frost observed
Tokyo, Nagoya, Saga, Miyazaki, Kagoshima

#First ice observed
Tokyo, Maebashi, Miyazaki, Kagoshima

*First frost, first ice (observed until 9:00 a.m.)

This week, the Japanese archipelago will have many days with winter-type atmospheric pressure. The cold air will linger in the Japanese archipelago, and it is expected to get even colder over the weekend. The temperature forecast for Tokyo in the future is that the temperature will drop as the week progresses, with the maximum temperature expected to be in the single digits at 9 C on the 15th (Sunday). The minimum temperature observed today was 2.5 C, but the morning chill is expected to drop again to 2 C over the weekend.



Among other major cities, Fukuoka is expected to reach 8 C on the weekend of the 14th (Sat) and 9 C on the 15th (Sun). Due to the influence of cold air, the maximum temperature is expected to not reach 20 C over the weekend even in Naha, Okinawa, and it will become colder from north to south. The winter pressure pattern is also expected to strengthen again over the weekend, and the Sea of Japan side will be a pressure pattern that will bring heavy snowfall mainly along the mountains. The snow will be a blessing for ski resorts, but please be careful of sudden increases in snowfall and avalanches.

On Monday, the 9th, the snow and rain areas on the Sea of ??Japan side are shrinking from the west, while the Pacific side is clear and the air is dry.

2024/12/09 06:22

Today, the 9th (Monday), the winter pressure pattern will loosen from the west. Snow and rain will fall on the Sea of Japan side, but the strong cold air will gradually retreat and the area of rain and snow will narrow from Western Japan. The Pacific side will be mostly clear and the air will continue to be dry. The minimum humidity is expected to be 32% in Tokyo, 40% in Nagoya, and 39% in Osaka and Kochi.



The predicted maximum temperatures will be 2 C in Sapporo, 6 C in Akita, and 8 C in Niigata, so the air will be cold. Even on the clear Pacific side, the winter-like cold is likely to continue, with Sendai at 8 C, Tokyo at 13 C, Nagoya at 11 C, and Osaka at 12 C.

First snowfall in various regions, observed in Maebashi one month earlier than last year

2024/12/08 21:26

A winter-type atmospheric pressure pattern is strengthening around Japan, and strong cold air is flowing into various areas today, the 8th (Sunday). As a result, reports of the first snow have arrived from the Sea of Japan side of western and eastern Japan, with the first snow observed in Kanazawa, Matsue, Hiroshima, and Maebashi. In Maebashi, it was observed one day earlier than the average and 30 days earlier than last year, while in Hiroshima, it was observed on average and 9 days earlier than last year.

#First Snow

Maebashi: One day earlier than the average and 30 days earlier than last year
Hiroshima: On average and 9 days earlier than last year
Matsue: One day later than the average and 20 days later than last year
Kanazawa: 14 days later than the average and 9 days earlier than last year

Tomorrow's weather: Snow and rain will continue in northern Japan, while the Pacific side will be sunny but cold.

2024/12/08 17:57

Tomorrow, Monday the 9th, a high pressure system will extend out, and the winter pressure pattern will gradually weaken from the west. However, the winter pressure pattern will continue in northern Japan, and snow and rain are expected in some areas on the Sea of Japan side. On the Pacific side, clouds will spread at times, but many areas will be sunny.



The area of snow on the Sea of Japan side of Hokkaido and Tohoku will shrink from today, but there will be areas where snow will continue, mainly along the mountains. The western wind will feel cold during the day. The Pacific side is expected to be sunny.

It will rain in some areas of Sanin and Hokuriku until dawn, but the weather is improving.
It will be cold during the day, as is typical of this time of year, so please take proper measures to protect yourself from the cold.

The Pacific side of eastern and western Japan will be sunny. The morning will be colder and bitterly cold. The cold air above will continue to affect temperatures during the day, so temperatures are expected to be 13 C in Tokyo and 12 C in Nagoya and Osaka. The air will remain dry, so please be careful when handling fire.

Snowfall increases along the Sea of ??Japan coast. Beware of poor visibility and heavy snow due to blowing snow.

2024/12/08 13:19

A strong winter pressure pattern continues, with cold air below -36 C at around 5,500m reaching southern Tohoku, and strong cold air below -6 C at around 1,500m moving south to the Sea of Japan side of western Japan.

Snow is falling over a wide area from the Sea of Japan side of northern Japan to Sanin, and locally developed snow clouds are flowing in from the Sea of Japan.

The 24-hour snowfall (maximum daily amount) up to noon was 34cm in Sekiyama, Myoko City, Niigata Prefecture, 32cm in Hakuba Village, Nagano Prefecture, and 32cm in Oguni Town, Yamagata Prefecture.
As of noon, a heavy snow warning has been issued in Nagano Prefecture, and heavy rain warnings have been issued in Niigata Prefecture and Toyama Prefecture.

In addition, as of noon, snow accumulation was 123 cm in Sukayu, Aomori City, Aomori Prefecture, 83 cm in Shumarinai, Horokanai Town, Kamikawa District, Hokkaido, and 83 cm in Otoineppu Village, Kamikawa District, Hokkaido, and many places are experiencing snowfall that exceeds the average.



Snow clouds and rain clouds will continue to flow in intermittently, and there will be heavy snowfall in some areas on the Sea of Japan side, mainly inland and along the mountains. Be careful of sudden increases in snowfall and worsening road conditions.
Westward winds are also strong, mainly in coastal areas, and strong winds of over 15 m/s on average are expected to blow with snow. Please be careful as there is a risk of poor visibility and traffic disruptions due to snowstorms.

Also, by this morning, reports of the first snowfall have been received in various parts of Western Japan.
#Locations where the first snowfall was observed
+Sanzan, Saga Prefecture 1 day earlier than the average, 20 days later than last year
+Mt. Gokurakuji, Hiroshima Prefecture 6 days earlier than the average, 20 days later than last year
+Sanuki Mountains, Kagawa Prefecture 10 days earlier than the average, 20 days later than last year
+Mt. Juho, Tottori 8 days later than the average, 25 days later than last year

In the mountains and mountainous areas of Western Japan, snowfall has been observed since this morning in an increasing number of places, so it is necessary to prepare for snow when going out. If you are planning to drive on mountain passes, please switch to winter tires.