Pollen Season Forecast and Updates in Oita Prefecture and Kyushu Region

2024-02-12 08:20:00

2024/02/12 17:20 Weather News

According to Weather News analysis, Oita Prefecture has entered the cedar pollen scattering season from today, February 12th (Monday). The dispersal started 3 days later than last year.

Weather News has installed its own pollen monitoring machine “Porun Robo” in regarding 1,000 locations across the country and has started observing pollen, and the number of reports of hay fever symptoms by users of the Weather News app is increasing.

From mid-February onwards, the number of pollen particles will increase further, and it looks like the pollen season will be in full swing.

All of Kyushu is in pollen season

Oita Prefecture has decided that pollen season has entered due to an increase in the number of hay fever symptoms reported by weather news app users. It’s now pollen season across Kyushu.

・February 12th
Oita Prefecture

Male cedar flowers begin to release pollen when the weather gets warmer. This winter, there was a timing when warm air flowed in mid-January. This seems to have caused the male cedar flowers to bloom more quickly, and in February, when the weather became clear and the weather was a little less cold, conditions became easier for pollen to be dispersed.

Temperatures will be similar to those of April following the holidays, and Tokyo will start to disperse

Pollen scatter forecast

Temperatures are expected to rise temporarily following the three-day weekend. At this time, there is a possibility that cedar pollen will be easily dispersed in western and eastern Japan.

It is predicted that there will be days in Fukuoka and Tokyo where pollen scattering is ranked as “high”. Please take measures once morest hay fever.

The peak of cedar pollen scattering is from mid-February to mid-March.

Dispersion peak forecast (cedar pollen/cypress pollen)

Cedar pollen is expected to reach its peak in mid-February when it gets warmer in western Japan, the Tokai region, and the Kanto region, late February in Hokuriku and southern Tohoku, and early March in northern Tohoku.

In the second half of March, the amount of cedar pollen gradually reaches its peak, and the amount of cypress pollen from western Japan increases.

It is expected that cypress pollen will reach its peak from mid-March to mid-April, mainly in western and eastern Japan. If the temperature continues to rise, the peak may occur earlier than expected, so please be careful if you are sensitive to cypress pollen.

It is expected that birch pollen will be in full swing in Hokkaido from late April to mid-May, which may coincide with Golden Week.

About pollen season

At Weather News, we make announcements regarding the pollen season based on pollen detection by our own pollen monitoring machines, “Porun Robo,” which we have installed around 1,000 of them around the country, and on reports of hay fever symptoms from users of the Weather News app. Masu.

*Guideline for determining the start of pollen season
・On days when pollen is likely to fly, more than 30% of Porun Robo in each prefecture observed more than 10 pollen particles for two or more days.
・Durham observation data such as user’s hay fever symptoms and surrounding research institutes and hospitals
We make a comprehensive judgment based on the above.
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Photo: Weather Report (posted from the Weather News app)

Reference materials etc.

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