Due to the influence of fronts and moist air, the atmospheric conditions became unstable in various parts of northern and western Japan, and it seems that heavy rain of about 100 mm was locally rained in Niigata prefecture. Was announced.
Be wary of landslides, low land inundation, and sudden flooding of rivers.
According to the Japan Meteorological Agency, the atmospheric condition has become unstable, especially on the Sea of Japan side, due to the influx of warm and moist air from the south toward the front extending from the Sea of Japan to the vicinity of Tohoku, and rain clouds are developing in various places. ..
According to radar analysis, it seems that heavy rain of about 100 mm fell in the vicinity of Mikawa, Aga Town, Niigata Prefecture in one hour until 3:30 am, and "record short-time heavy rain information" was announced.
In the hour until 5 am, heavy rain was observed at 36 mm on the rain gauge installed in Shibata City by Niigata Prefecture and 31 mm on the rain gauge installed in Nagai City by Yamagata Prefecture.
Due to the rain so far, the risk of sediment-related disasters has increased in Niigata, Yamagata, and Fukushima prefectures, and there are some areas where sediment-related disaster warning information has been announced.
Due to the cold air flowing into the sky, it is expected that the atmospheric instability will continue over a wide area from northern Japan to western Japan, and heavy rain will occur with lightning. There is a risk of heavy rain.
The Japan Meteorological Agency calls for caution against sediment-related disasters, low land inundation, and sudden flooding of rivers.
You need to be careful about strong gusts such as lightning strikes and tornadoes, as well as "hail".