Intense cold wave hits. Heavy snow and blizzard in northern Japan and Hokuriku over the weekend. Snowfall also occurs in flat areas in eastern and western Japan.
December 15, 2023 18:46
Strong cold air will flow in over the weekend, so northern Japan and Hokuriku will need to be on guard against heavy snow and strong winds. Also, there are places on the Pacific side where there will be snow, so please be careful of the impact on traffic. Next week will also be affected by cold air, and we will need to be careful about heavy snow and severe cold.
Cold wave hits on weekend, heavy snow and blizzard in northern Japan and Hokuriku
A front is expected to pass near Honshu on Saturday the 16th, bringing cold air into the vicinity of Japan. Additionally, a low pressure system is forming in the Sea of Japan and is expected to rapidly develop as it passes through northern Japan. The whole country will be covered in clouds, with rain and snow expected. In the Japan Sea side of Tohoku and the Hokuriku region, which are close to the low-pressure area, winds will become stronger from the evening onwards, and it is likely to become a major storm at sea. Please be careful of strong winds and high waves. In Hokuriku, caution and vigilance are required for heavy rain.
On the 17th (Sunday), the area around Japan will have a winter-like atmospheric pressure pattern, and strong cold air will flow in. In northern Japan, the snow is increasing mainly on the Sea of Japan side, and snow clouds are likely to flow into the Pacific side as well. On the Sea of Japan side of Hokkaido, there is a risk of localized blizzards with no visibility at all, and caution is needed against traffic disruptions due to snowdrifts and strong winds.
In Hokuriku, due to the JPCZ (Japan Sea Polar Air Mass Convergence Zone), snow clouds may continue to cover similar areas, leading to increased snowfall. Please be aware of the impact on traffic.
Expected snowfall
The amount of snow expected in the 24 hours up to 6pm on the 17th is expected to be high in some places.
In Hokkaido, 40-60 cm
In Tohoku and Hokuriku, 30 to 50 cm
The amount of snow expected in the 24 hours up to 6pm on the 18th is high in some places.
In Hokuriku, 50-70 cm
In Hokkaido and Tohoku, it is 30 to 50 cm.
Expected wind and waves
The maximum wind speed (maximum instantaneous wind speed) expected on the 16th is
23 meters (35 meters) in Tohoku and Hokuriku
The maximum wind speed (maximum instantaneous wind speed) expected on the 17th is
20-24 meters (30-40 meters) in Hokkaido and Tohoku
In Hokuriku, 20-24 meters (25-35 meters)
The expected wave height on the 16th is
6 meters in Tohoku and Hokuriku
The expected wave height on the 17th is
6 meters in Tohoku and Hokuriku.
In Hokkaido, it is 5 meters.
Be careful of the effects of traffic, whether on flat land on the Pacific side or in snowy areas.
Snow will fall in the northern Kinki region, the San’in region, and northern Kyushu, and it is likely to snow not only along the mountains but also on the flatlands.
On the other hand, many areas on the Pacific coast will have sunny skies. However, it is expected that cold air with temperatures below -6 degrees Celsius will flow into southern Kyushu at an altitude of 1,500 meters, which is a guideline for snow to fall on flat areas, so it is likely that snow will accumulate in some flat areas on the Pacific side. In some places, such as the flatlands of northern Kanto (northern Tochigi) and along the mountains of southern Kyushu, it will be the first real snow of the season, so please be prepared by carrying chains and installing winter tires. .
Caution and vigilance are required on the 18th (Monday) due to heavy snow, especially in areas along the Sea of Japan.
Cold waves will frequently hit next week, with lots of snow and severe cold.
On the 19th (Tuesday) and 20th (Wednesday), low pressure systems will move over the Sea of Japan and the sea south of Honshu, respectively, so it is likely to rain mainly in eastern and western Japan.
From the 21st (Thursday) onwards, cold air will return, and snow is likely to fall mainly on the Sea of Japan side. There is a risk of heavy snow as the sea water temperature on the Sea of Japan side is higher than normal. Please check the latest weather information.
Next week will be bitterly cold across the country, and there will be days when the maximum temperature will not even reach 10 degrees in eastern and western Japan. Please be careful not to get sick by taking all possible measures against the cold.
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2023-12-15 09:46:14
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