In March, the warm cedar pollen spike is early and the cherry blossoms begin to bloom. Forecast for 1 month (Feb 18, 2021) – Japan Meteorological Association tenki.jp

02/18/2021 Japan

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In March, warm cedar pollen peaks earlier and cherry blossoms bloom earlier, one-month forecast

There are places where the temperature difference is large in the second half of February, but it is expected to be warm throughout the country in March. There are places where pollen peaks earlier and cherry blossoms will bloom across the country earlier than normal. This is the latest “1-month forecast” announced by the Japan Meteorological Agency.

Forecast of high temperatures throughout the country until mid-March

The Japan Meteorological Agency announced the “1-month forecast” on the 18th.

Accordingly, the area around Japan will easily be covered with warm air during the month leading up to mid-March. As a result, average temperatures over the next month are expected to be “higher than normal” across the country.

Also, because it is not easily affected by cold air, the amount of snow in Hokkaido, the Tohoku Sea of Japan side, and Hokuriku will be less than normal in the next month.

However, due to heavy snowfall in recent days, the amount of snow at 3:00 PM on the 18th is higher than normal in the Hokuriku and Tohoku Mountains and in some parts of Hokkaido. In Tsugawa, Aga City, Niigata Prefecture and Nou, Itoigawa City, the amount of snow is about 150 cm, more than double the amount in the same period in normal years. Even if the snowfall is less than normal, it is already heavy snow and the temperature in the future will be higher than normal, so the snow will melt more and more from the second half of February to March. You have to be careful when the river rises due to melting snow and falling snow from the roof.

[20-26 de febrero]Watch out for temperature differences Cedar pollen spikes

Let’s take a closer look each week.

The average temperature for February 20-26 will be “normal or high” in Hokkaido and Tohoku. However, during this period, due to the effects of low pressure and cold air, there are more cloudy, snowy, or rainy days than normal on the Sea of Japan side, and it seems that there will be days when suddenly come back cold. Please note that the temperature difference will increase depending on the day.

On the other hand, since Kanto Koshin, Okinawa is expected to be “taller than normal”.

It is the “cedar pollen” that is expected to increase in this heat. Especially from Kinki to Kyushu, the flowering of Japanese cedar flowers is constantly progressing, and there will be places where dispersal of Japanese cedar pollen will reach its peak at this time. It appears that the number of days in which comprehensive measures against pollen are required will increase.

[27 de febrero-5 de marzo]Take comprehensive measures against pollen even in the event of a corona virus

The average temperature from February 27 to March 5 will be “higher than normal” from Hokkaido to Kyushu. Okinawa / Amami is expected to be “normal or tall”.

According to the Japan Meteorological Agency, December-February is “winter” and March-May is “spring,” and the season changes from “winter” to “spring,” but spring is early this year. It seems there are many. This warmth will increase the number of places where cedar pollen peaks.

There is also an experiment in which approximately 10 million pollen flowed into the interior of a 3LDK condo after 1 hour of ventilation at the pollen peak. This year, I think there will be many opportunities to ventilate to prevent infection with the new coronavirus, but by making the width of the window open about 10 cm and using a lace curtain, the pollen entering the room Experiments have shown that the number can be reduced to about a quarter of what it was when it was fully open. It doesn’t matter how wide you open the window, so try to ventilate as much as possible to avoid pollen.

[6-19demarzo]The warmth of cherry blossoms

From March 6 to 19, the average temperature will be “higher than normal” from Hokkaido to Kyushu. In Okinawa / Amami, it is expected to be “normal or high”.

Due to the heat of the season, the buds of cherry blossoms are likely to swell at a faster rate than usual. From Kanto Koshin to Kyushu, there will be places where cherry blossoms will start to bloom at the end of this period.

Also, due to the high temperature, spring clothes are likely to come into play earlier than usual. During the day, it seems that there will be more days to enjoy spring clothes, but on sunny nights the radiative cooling will be stronger, so there will be more cold days in the morning and at night. Wear clothes that are easy to fit and welcome the spring season.

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