Outlook for cold and snow for this winter Continuation of La Niña phenomenon Is it the entry of cold air from the west?

11/25/2020 Japan

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Cold and snow outlook for this winter La Niña phenomenon continued Is cold air flowing from the west?

The La Niña phenomenon is expected to continue into winter. The west wind tends to meander south near Japan, and there seems to be a time when cold air tends to flow around the west. This winter (December-February) weather and temperature forecast.

The Laninha phenomenon continues

The La Niña phenomenon is expected to continue through the winter, and the sea surface temperature in the Pacific Ocean is expected to be low in the central and eastern equatorial regions, while high in the western tropical regions, and expect turbulent cloud occurrence to increase. For this reason, the westerly wind tends to meander south near Japan, and the Siberian high pressure will have a slightly stronger cantilever to the south-east side. There seems to be a time when cold air tends to flow into western Japan.

December in the cold like a teacher

In early December, the area around Honshu is easily covered with high pressure, but the winter-type pressure distribution will gradually become stronger. On the side of the Sea of Japan in northern Japan and eastern Japan, there are likely to be many days of snow and rain as in normal years. Fewer rainy and snowy days are expected on the Japanese side of the Sea of Japan, and there will be more sunny dry winter days on the Pacific side. Okinawa and Amami will have many cloudy and rainy days as in normal years.

The average temperature will be approximately the same as normal throughout the country. It won’t be a warm winter like last year, and it looks like there will be a lot of cold days like a teacher.

January Cold air flows through the west

The winter-type pressure distribution will be strengthened and cold air will flow easily from the west. The northern and eastern side of the Sea of Japan in Japan is likely to have more snow and rainy days than in normal years. The side of the Sea of Japan in western Japan will have more snow and rain than normal. Be careful because the amount of snow can be high. There are many sunny days in various parts of the Pacific Ocean, but there are likely to be many days when the cold north wind blows. Okinawa and Amami will have many cloudy and rainy days as in normal years.

The average temperature in northern Japan is normal or high, but in eastern Japan it is normal or low, and in western Japan, Okinawa and Amami it is normal or low. It is likely to be colder than usual, especially in western Japan.

February Many cold days

The winter-type pressure distribution in western Japan will be as strong as usual. There are likely to be many days of snow and rain on the northern Japan, eastern Japan, and western Japan side of the Sea of Japan. There will be many sunny days in various parts of the Pacific Ocean. Okinawa and Amami are likely to have as many cloudy and rainy days as in normal years.

The average temperature in northern Japan is as high as normal, but in eastern and western Japan, Okinawa and Amami are likely to be normal. Even after the beginning of spring (February 3), there will be many cold days. The beginning of spring is unlikely.

Northern Japan (Hokkaido / Tohoku)
Eastern Japan (Hokuriku / Kanto Koshin / Tokai)
Western Japan (Kinki, Shikoku, China, Kyushu)

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