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How long will the severe cold last ?, how will spring come ?, forecast for 3 months
In January, the winter-type pressure distribution will be stronger, so severe cold is expected to continue throughout the country. However, after February, the temperature tends to be high in northern Japan. You need to be careful with avalanches and snowfalls due to the sudden increase in temperature.
Weather forecast and temperature from January to March.
January-March Susceptible to cold air
According to him, the temperature from January to March will be “normal or lower than normal” in eastern and western Japan because it is easily affected by cold air. Northern Japan and Okinawa / Amami are expected to be “near normal”.
Snowfall is expected to be “normal or higher than normal” on the North and West Japan Sea side, and “more than normal” on the East Japan Sea of Japan side.
[Este de Japón]Kanto Koshin / Hokuriku / Tokai Region
[Oeste de Japón]Kinki, Chugoku, Shikoku, North Kyushu, South Kyushu
[Okinawa / Amami]Kagoshima Prefecture Amami Region / Okinawa Region
The La Niña phenomenon is likely to continue into spring, and the sea surface temperature in the Pacific Ocean is low in the central and eastern equatorial regions, while it is high in the western tropical regions, and there will be many disturbing clouds. .
Due to these effects, the westerly wind in the sky is expected to flow north on the mainland more easily than usual and head south in the vicinity of Japan. For this reason, the Siberian high pressure has a strong cantilever to the southeast side, mainly in January, and cold air will easily flow into the vicinity of Japan.
January Beware of severe cold and heavy localized snowfall
On the side of the Sea of Japan in northern Japan, there will be more cloudy and snowy days than in normal years. Even on the eastern and western side of the Sea of Japan, there are likely to be more cloudy, snowy, or rainy days than in normal years. In particular, there is a risk of heavy snowfall locally on the northern and eastern side of the Sea of Japan from Japan due to strong cold air until mid-January. As the seasonal wind gets stronger, watch out for splashes and puddles. On the other hand, there are expected to be more sunny days in various parts of the Pacific Ocean than in normal years. As in normal years, there will be many cloudy and rainy days in Okinawa and Amami.
Average temperatures are expected to be “lower than normal” in northern, eastern and western Japan, which are affected by cold air, and severe cold weather is expected to continue. Okinawa / Amami is not easily affected by cold air, so it is probably “almost normal”.
February High temperature trend in northern Japan
On the side of the Sea of Japan in northern Japan, there will be many cloudy and snowy days like in normal years. The eastern and western side of the Sea of Japan of Japan is expected to have many cloudy, snowy or rainy days as in normal years. There will be many sunny days in various parts of the Pacific Ocean. Humid air flows easily from the south to Okinawa and Amami, so there are likely to be as many cloudy and rainy days as in normal years.
Average temperatures are expected to be “near normal” in eastern Japan, western Japan, and Okinawa / Amami. February 3 is the “Nascent Spring” of 24 years, but there are still many cold days, and it seems that spring will not come.
However, since northern Japan is less susceptible to the effects of cold air, it is expected to be “normal or higher than normal”. In areas with heavy snowfall, watch out for avalanches and snow falling from the roof.
March Watch out for all the layers
In March, the low pressure will be easier to pass into northern Japan and it will be less susceptible to cold air.
The side of the Sea of Japan in northern Japan is likely to have more cloudy, snowy, or rainy days than in normal years. The Pacific side of northern Japan is expected to have many sunny days as in normal years. The weather on the eastern and western side of the Sea of Japan changes every few days, but the Pacific side will have many sunny days. Due to the influence of humid air in Okinawa and Amami, there are likely to be as many cloudy and rainy days as in normal years.
Average temperatures are expected to be “near normal” in eastern Japan, western Japan, and Okinawa / Amami. From Kanto to Kyushu, the news of spring, like cherry blossoms, will arrive after mid-March.
Northern Japan is expected to be “normal or higher than normal”, and the trend of high temperatures will continue from February. We still have to watch out for falling snow and avalanches from the roof.
In early spring, when the temperature rises, a lot of “full-thickness avalanches” occur after it rains or when the temperature rises due to the Fane phenomenon. It is very dangerous because all the hard and heavy snow that has accumulated on the slope is sliding down. Be especially careful on slopes where there have been avalanches in the past or where there are cracks in the snow.
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