Due to the cold air and moist air in the sky, the atmospheric conditions became unstable in eastern and northern Japan, and in some places it rained heavily.
Due to the remaining cold air in the sky, there is a risk of localized heavy rain even on the 31st, so be wary of sediment-related disasters, inundation of low land, and sudden flooding of rivers.
According to the Japan Meteorological Agency, atmospheric instability continues in eastern and northern Japan due to the effects of cold air and warm, moist air in the sky.
Rain clouds are developing locally in Kanto Koshinetsu, Tohoku, Hokkaido, etc., and a rain gauge installed by the Ministry of Land, Infrastructure, Transport and Tourism in Minami Uonuma City, Niigata Prefecture for one hour until 4:00 pm, causes heavy rain of 85 mm. I observed it.
In addition, according to radar analysis, it is
estimated
that it rained
about 60 mm in the vicinity of Hamamatsu City, Shizuoka Prefecture
, and about 50 mm in the vicinity of Iida City
,
Nagano Prefecture
in one hour until 5:30 pm
.
As the risk of sediment-related disasters has increased due to the rain so far, there are areas in Hokkaido and Niigata prefecture where "sediment-related disaster warning information" has been announced.
From eastern Japan to northern Japan, it is expected that extremely heavy rain of 50 mm or more per hour will occur locally with lightning late at night on the 30th, and the cold air in the sky will continue to stay, so the station will be stationed mainly in the afternoon on the 31st. There is a risk of heavy rain.
The amount of rain in the 24 hours until the evening of the 31st
is expected to be
100 mm in Kanto Koshinetsu
and 80 mm in Tohoku and Hokuriku.
The Japan Meteorological Agency warns against sediment-related disasters, inundation of low land, sudden flooding and flooding of rivers, and calls for careful attention to gusts such as lightning strikes and tornadoes and "hail".