北海道ほっかいどう 記録きろく的てき大雨おおあめや線せん状じょう降水こうすい帯たい発生はっせい 土砂どしゃ災害さいがいなどに警戒けいかいを

Due to the effects of a low-pressure system and a front, record-breaking heavy rain occurred in Hokkaido, and a Significant Heavy Rain Information alert was issued as linear rainbands formed in the Kushiro and Tokachi regions.

The developed rain clouds are starting to clear, but caution is still needed for landslides, river flooding and overflow, inundation of low-lying areas, as well as strong winds.

A linear rainband has formed in the Kushiro and Tokachi areas of Hokkaido. According to the Japan Meteorological Agency, due to a low-pressure system accompanied by a front, developed rain clouds have been covering Hokkaido since last night. Around 3 a.m. on the 21st, a linear rainband formed in the Kushiro and Tokachi areas, prompting the announcement of information regarding significant heavy rain.

This is the first time that Information on Significant Heavy Rain has been issued for Hokkaido since the information system began operating four years ago.

Record-breaking short-term heavy rain warnings were issued one after another, and record-breaking short-term heavy rain warnings were also repeatedly announced.

Around the Onbetsu area of Kushiro City, radar analysis indicated that about 80 millimeters of torrential rain fell in one hour until 3 a.m. In addition, it was announced in the early hours of the 21st that heavy rain also occurred near the plains of Tomakomai City and near Atsuma Town in the Iburi region.

In Atsuma Town, the six-hour rainfall up to 1 a.m. was 165.

Since records began, the rainfall exceeded 5 millimeters, marking the highest amount ever recorded and resulting in heavy rain that surpassed the average total for the entire month of September.

In addition, in Hokkaido, the 12-hour rainfall up to the morning of the 21st was 186 mm in Onbetsu Futamata, Kushiro City.

5 millimeters, ▽ 171 millimeters in Shiranuka Town, ▽ 166 millimeters in Urahoro Town

Both have reached their highest amounts since records began, with 5 millimeters.

In Hokkaido, the risk of landslides is increasing, and landslide warning information has been issued in some areas. In addition, there are rivers where the water level has exceeded the flood danger level.

In Hokkaido, the developed rain clouds are starting to clear, but there is still a risk of heavy rain in some areas through the morning. Please be alert for landslides, rising and overflowing rivers, and flooding in low-lying areas.

Also, in Hokkaido, the wind is getting stronger, and the maximum instantaneous wind speed in the three hours up to 6 a.m. was 31 meters per second in Nemuro City.

4 meters, ▽ exactly 30 meters in Sakanamachi, Hamanaka Town, ▽ 28 meters in Kushiro City

It is set to 1 meter, etc.

The maximum instantaneous wind speed expected on the 21st is 35 meters per second, so caution against violent winds is necessary.

On the other hand, due to the influence of a cold front, the atmosphere is extremely unstable over a wide area from northern to western Japan. The Japan Meteorological Agency is urging people to be cautious of lightning, tornadoes, and other severe gusts of wind, as well as hail.

Tomakomai: Houses Flooded In the Yufutsu area of Tomakomai City, some houses were submerged in water, and residents were busy cleaning up afterward.

An 83-year-old man whose home was flooded said, In the middle of the night, I noticed that the carpet in my room was wet and water was overflowing from the entrance.

Ive lived here for 50 years, but this is the first time something like this has happened, he said.

In Taiki Town, Tokachi, the brown, muddy water of the river flows noisily. Around 6 a.m. on the 21st in Taiki Town, Tokachi region, the Rekifune River, which runs through the center of the town, was swollen, and brown, muddy water could be seen flowing with a roaring sound.